iwc portugieser yacht club moon & tide

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Introducing The IWC Portugieser Yacht Club Moon & Tide

A nautical theme to the extreme..

If you're going to make a watch line up dedicated to the yacht club – which IWC established as a subset of the Portugieser in 2010 – a tide-indicating complication only makes natural sense. (The name was first used, of course, in 1967, for a watch intended to be an all-weather but still club-elegant sports watch.) So, 10 years into the Yacht Club family line, IWC has just announced the new reference IW344001 Portugieser Yacht Club Moon & Tide. Presented in red gold with a shining blue dial and a matching blue rubber strap, this new Portugieser certainly looks the part while debuting IWC's newly developed tide-following complication. 

First things first, with a 44.6mm wide case, the Portugieser Yacht Club Moon & Tide is as large as it is pretty. The Yacht Club line has always done a good job of communicating a blend of both sport and elegance. While the use of a gold case on the Yacht Club Moon & Tide is decidedly foncy, the blue rubber strap does a nice job of striking a boat-ready balance. I especially like the red dial details, the clarity of the overall display, and the splash-ready 30 meters of water resistance. 

Using a newly-developed caliber 82835 manufacture movement, the Yacht Club Moon & Tide offers a brand new feature set that expands upon the dual hemisphere moon phase display that IWC has made strong use of with many of their perpetual calendar models. With a minimal addition of text surrounding the moon phase display, the Yacht Club Moon & Tide also notes the strength of the tides by making a differentiation between spring and neap tides. 

Combine that slight moon phase modification with a novel tide timing indication at six o'clock, and you've got a $34,000 IWC that can help you to better manage the ebb and flow of the tides. While not many of us need a watch that can offer such information, the complication feels both right at home within the Portugieser Yacht Club line up and a fittingly nautical way of saluting the Yacht Club on its 10th anniversary. 

Brand: IWC Model: Portugieser Yacht Club Moon & Tide Reference Number: IW344001

Diameter: 44.6mm Thickness: 14.4mm Case Material: 18k 5N pink gold Dial Color: Blue Indexes: Applied, gold   Lume: Yes. Water Resistance: 30 meters Strap/Bracelet: Blue rubber strap 

Caliber: 82835 Functions: Hours, minutes, seconds, date, moon phase for both hemispheres, and an indication of next high and low tide Power Reserve: 60 hours Winding: Automatic Frequency: 28,800 vph Jewels: 22 

Price: $33,100 Availability: TBD

For more, click here.

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Up Close: IWC Portugieser Yacht Club Moon & Tide

The flagship of IWC’s new Portugieser watches unveiled at Watches & Wonders 2020 is not the most complicated, but it is certainly the most unusual. The Portugieser Yacht Club Moon & Tide is a first for IWC, introducing a brand-new complication to its line-up – a tide indication that tracks the ocean’s ebbs and flows.

Initial thoughts

The Yacht Club Moon & Tide is a big, heavy and shiny sports watch with twin sub-dials, but it is far more interesting than the typical watch in this category (which is almost always a chronograph).

One of the very rare, comprehensive tide-display watches on the market, the Yacht Club Moon & Tide incorporates twin tidal displays, which are useless for most but fascinating, not just because they are rare but also because they are, in essence, an astronomical complication. And the tidal displays are combined with IWC’s trademark double moon phase, making it a bit more compelling.

(But like all tide-indicator watches, the new Yacht Club has a caveat: IWC points out it “works reliably on all coasts with two equally strong high and low tides per day”. It is not a flaw, but just a nature of the complication. More that below.)

At the same time, the watch overall is constructed to IWC’s usual levels of quality, which is to say excellent. The only downside is the rose-gold case, resulting in a steep price tag; hopefully a steel or titanium version comes along (and it probably will).

The tidal watch, until now

The tide-indicator complication first appeared in a wristwatch in 1949 when Heuer unveiled the Solunar , which was followed by the Seafarer that combined a tidal display with a chronograph. L ike regatta timers for boating, tide-indicator watches were specialised timers created to cater to the growing popularity of recreational and competitive sailing in the 1950s. However, the tidal complication  remained relatively rare compared to the regatta timers that had a straightforward application in sailing, making it more commercially successful.

But while regatta timers were designed to countdown to the start of a sailing race, tide indications are astronomical in nature. In fact, they can be seen as an elaboration on the moon phase, because tides are the terrestrial result of the fluctuating gravitational forces exerted by the Moon and Sun on the Earth.

The Corum Admiral’s Cup Tides of 1992. Photo – Sotheby’s

Tide indications should be of broader interest, being useful to fishermen, surfers, sailors, at least in theory. In reality, mechanical tide indications occupy an esoteric area of watchmaking. The complication exists in but a handful of watches spread across a diversity of price points, depending on the complexity of the tide indication.

At the entry level is the affordable Sinn 240 St GZ with a no-frills tide-calculator bezel and a price tag of under US$2,000. At the other end of the spectrum is the artistic Real Moon Tides from independent watchmaker Christiaan van der Klaauw.

But worthy of special mention is the pioneer of the high-end tide indication in modern watchmaking. In 1992, Corum debuted the Admiral’s Cup Tides, which included three tide-related displays and is still in production today as the Admiral AC-One Tides.

That makes the Portugieser Yacht Club Moon & Tide fairly special, being the only tide-indicator watch offered by a major brand today. Additionally, it stands out for being a comprehensive tide indicator, while still maintaining a clean, two-register dial that is reminiscent of the Yacht Club chronograph. But before delving into the new Yacht Club, let’s take a short dip into the world of tides.

Tide formation

A tide indication is usually accompanied by the moon phase display because the Moon is a major influence on the level of the oceans, more so than the Sun. The gravitational pull of the Moon generates a tidal force that is constant no matter the phase of the Moon. And that tidal force causes the oceans to bulge, on the side of the Earth that is facing the Moon.

But at the same time, the side of the Earth furthest from the Moon bulges because the gravity of the moon is also acting on it, resulting in the water on Earth being stretched into something resembling a rugby ball.

The bulges in the oceans results in high tides around the continents, but not all high tides are created equal. For simplicity, a high tide is often portrayed as being the same everywhere but that’s actually not the case in reality. The bulge in the oceans furthest from the Moon is smaller than the one facing the Moon as the gravitational pull exerted the far side of the Earth is weaker.

The rugby-ball shape that results from the Moon’s gravitational pull

Because the Earth rotates on its own axis anticlockwise in about 24 hours, it undergoes the cycle of high and low tides twice each day. However, the Moon also orbits the Earth approximately every 29.5 days, roughly equivalent to a calendar month. Thus, during the time it takes the Earth to complete one rotation on its own axis, the Moon progresses a little further on its monthly orbit of the Earth.

As a result, for a fixed spot on Earth to return to face the a fixed spot on the Moon requires 24 hours and 48 minutes, otherwise known as a Tidal Day. And because the tidal cycle happens twice a day, a high tide occurs every half-Tidal Day, or 12 hours and 24 minutes.

Ordinary high and low tides, however, are less extreme than Spring tides that happen when the Sun, Moon and Earth are in syzygy, or linear alignment. Occurring once every full and new moon, syzygy amplifies the gravitational effects on the Earth’s tides, resulting in more extreme tide levels that rises higher as well as fall lower than average.

Conversely, when the Sun and Moon are acting on the Earth at a right angle to each other, a Neap tide occurs. The tidal forces counteract each other, reducing the strength of the average tide due to the opposing gravitational pull. Consequently, high tides are lower, while low tides are higher, compared to the average. While high and low tides are a daily occurrence, Spring and Neap tides occur twice each lunar month, or every 14.76 days.

Spring tides occur when the Earth, Sun, and Moon are in linear alignment; when the Sun and Moon are perpendicular to each other and the Earth, the result is neap tides

Just as the oceans bulge on different sides of the Earth due to the influence of the Moon, tides also vary on a smaller scale from place to place, due to not just to the position of the Moon and tilt of the Earth, but also local factors like the shape of the continents, depth of the oceans and so on.

Consequently, tidal patterns can be classified into three categories. Because it is built to cater to the twice-daily tidal patterns found in most of the world, the Yacht Club Moon & Tide is functional for only one category, semidiurnal, where the two high tides each day are generally equal, and ditto for two low tides. Semidiurnal tides occur on most of the world’s coastlines, but not all.

The tidal indicators on the watch do not function if the high and low tides are respectively unequal, a pattern known as mixed tide. Neither do they apply to the third category of tidal patterns, diurnal, which has only a single high and low tide each day.

As a result, the Yacht Club Moon & Tide will be useful in Europe and the east coast of the United States, but not in the American west coast or Indonesia, for instance.

The tidal function of the Yacht Club Moon & Tide only applies to coastlines in green. Diagram – Michael Pidwirny, University of British Columbia, via Wikipedia

Yachting style

The Portugieser Yacht Club Moon & Tide is unique amongst tide-indicator watches as it combines IWC’s signature double moon phase along with a comprehensive tidal display that shows high and low tides, as well as spring and neap tides.

But style-wise it’s conventional and presented in standard Yacht Club format, which was conceived to be a sportier version of the Portugieser. For that reason, the Yacht Club has a greater wrist presence, not just because of its dimensions but also its muscular design with wide lugs, prominent crown guards, and a pronounced rim on the bezel.

Rendered in pink gold, the watch measures 44.6 mm wide and 14.4 mm high, which is a tad bigger than the already-large Yacht Club Chronograph . Because of it size and weight, the ergonomics are average. It would be far more practical and wearable in titanium or steel instead of pink gold.

The case quality is excellent, as IWC cases almost always are. Though the lines of the case are simple, it is finely finished. And the case is not just heavy, but also extremely solid in construction, as evidenced by the massive case back and the protruding crown guards. That said, the tolerances of crown guards are the one bit of the case that can be improved, as there’s a visible gap between the guards and the case.

The tidal complication

Symmetrically and logically arranged, dial takes its cues from the Yacht Club Chronograph (which in turn was inspired by the  Portugieser Chronograph ). Despite being superficially similar to the its chronograph cousin, the Yacht Club Moon & Tide is distinguished by the combination of a pink gold case with the blue dial, a first for the Yacht Club line.

Though the dial is relatively simple in style and detail, it is executed well, up to typical IWC standards. All of the elements look good even up close, ranging from the applied hour numerals to the printed markings. Even the tiny screw that screws the scale for the tide indicator is cleanly finished, revealing only barely-there machining marks.

The fairly complex tidal displays have been cleverly streamlined, leaving the dial is clean and easy to read. And the orderly appearance of the dial is helped by its size, which means that the date window doesn’t cut into the three o’clock numeral, though the date does crowd up that side of the dial.

The top sub-dial features a rotating blue disc with two apertures to show the phases of the moon as seen from both the Northern and Southern hemisphere. As with all IWC double moon-phase modules, it has an accuracy of a day in 577.5 years.

And because tides are dependent on the Moon, also integrated into the moon phase is the spring and neap tide indicator. The rim of the blue disc is marked with the periods of spring and neap tides, with a small, red arrow to indicate if the current period is a spring, neap, or ordinary tide.

The tide indicator within the moon phase

The sub-dial at six o’clock has a 12-hour scale with a slowly-rotating disc that indicates the times for high and low tides at the current time. Featuring a red arrow for high tide and a red ring for low tide, the indicator travels at the leisurely pace of one rotation every 14.76 days, or half a lunar month.

The slow rotation of the tidal disc is driven by reduction gears in the tide-display mechanism that convert the motion of the hour pinion, which carries the hour hand makes logically makes two rotations a day. The reduction ratio of the mechanism is substantial, after 12 hours and 24 minutes, which is half a tidal day, the tide disc would have rotated just 24 minutes on the 12-hour scale. But though it moves slowly, the tide indicator is exceptionally precise. According to IWC, it will deviate by 10 minutes after one century.

Conveniently, the tide indicator is independent of the time display so the it can be set via the crown. But setting the tide display also reveals a minor drawback in its 12-hour, rather than a 24-hour, scale. When setting the watch, the only way to tell if it is day or night is the date change at midnight. But aesthetics no doubt justify this, as the tidal sub-dial indicator has larger markings and better legibility than if it were on a 24-hour scale.

The tide indicator on a rotating disc, against a 12-hour scale, which shows high tide at about 3:30 and low tide at around 9:30.

The movement

The Yacht Club Moon & Tide is powered by the cal. 82835, made up of the cal. 82110 with the moon and tide module on top. Impressively, even with the added moon and tide displays, the movement has the same 60-hour power reserve as the unencumbered base movement.

Relatively compact but solidly-constructed and robust, the base movement is from IWC’s cal. 82000 family, which is related to the seven-day cal. 52000 and chronograph cal. 89000. The cal. 82000 is smaller than the cal. 52000, but the two share several features, most notably the Pellaton winding mechanism.

Invented by famed IWC watchmaker Albert Pellaton in 1946, the eponymous winding system centres on a heart-shaped cam driven by the winding rotor.

As the rotor turns, the cam oscillates the between two jewelled rollers mounted on a Y-shaped bridge. That causes the bridge to swing back and forth, transferring energy to a pair of attached pawls that push and pull against the teeth of the barrel ratchet wheel, winding the mainspring.

This iteration of the Pellaton system is the very latest, so the automatic wheel, pawls and cam are made of wear-resistant ceramic that needs no lubrication. In contrast, the simpler IWC movements, like the cal. 32000, utilise the “Magic Lever” type of mechanism with push-pull pawls.

The Pellaton winding system (top left) with its ceramic wheel and pawls visible

In addition to the Pellaton winding mechanism, the movement also boasts a free-sprung, adjustable-mass balance, generally considered to be the most sophisticated type of balance wheel. And as with a majority of IWC movements, the balance is attached to an ordinary flat hairspring (only a handful of much-larger movements, such as the 8-day cal. 59000 and the four-day cal. 94000, feature an overcoil hairspring).

The free-sprung balance

Because the movement is relatively fancy for a moderately-sized, simple automatic, it was designed with aesthetics in mind, with the rotor and bridges partially skeletonised to reveal the mechanics. The barrel bridge for instance has two large apertures revealing the barrel, gear train, and of course the Pellaton mechanism.

The finishing of the movement is typical of IWC. Mechanically applied, but sharp and clean, likely sharper and cleaner than peers in the same price bracket. It also incorporates aesthetic details like the “Probus Scafusia” seal on the rotor and again the base plate, along with gold-plated engraving, which give it more colour. As a result, the movement is visually attractive.

The skeletonised rotor with prominent bevelled edges

Concluding thoughts

Tide watches are truly off the beaten path of complications, making them unique in themselves. But the sophistication in design and execution of the Yacht Club Moon & Tide takes it a step further than its peers. The watch only has one real competitor, which is the Corum Admiral AC-One Tides. While the competition is sparse, the Yacht Club Moon & Tide edges ahead as it neatly combines the brand’s trademark moon phase with an all-inclusive tidal display.

The functionality of the Yacht Club Moon & Tide is essentially identical to the Corum Admiral AC-One Tides, but Yacht Club simplifies the tidal displays, making them more digestible for the layman user.

On the other hand, the Corum Tides displays the same information with more granularity, indicating tide levels on a 24-hour scale, and also tide strength on a numeral scale. That is doubtlessly more appealing to the specialist, but is probably too much for a watch enthusiast.

In terms of design, the Yacht Club trumps the Corum Tides, which is a chunky, brightly coloured watch that lacks the refined details of IWC’s wristwatch. And the Corum Tides also falls short in terms of mechanics, since it is powered an ordinary ETA 2892 base movement.

But, and this is important, the Corum Tides is available only in titanium, and is correspondingly affordable, with a price tag of under US$10,000, which is less than a third of the Yacht Club.

Consequently, the IWC is the top choice, but in the extremely rarefied realm of ultra high-end tide watches in precious metal cases. Being an interesting and unusual watch that is executed well, it really should be available in a steel or titanium. Fortunately, it probably will, going by IWC’s past practice.

Key facts and price

IWC Portugieser Yacht Club Moon & Tide Ref. IW344001

Diameter:  44.6 mm Height:  14.4 mm Material:  Pink gold Water resistance:  60 m

Movement:  Cal. 82835 Functions: Time; date; double-hemisphere moon phase; spring and neap tide indicator; and high and low tide display Frequency:  28,800 beats per hour (4 Hz) Power reserve:  60 hours

Strap:  Blue rubber strap with textile inlay

Limited edition:  No Availability: At boutiques and retailers from November 2020 Price:  35,000 Swiss francs

For more, visit  Iwc.com .

Correction April 29, 2020: The cal. 82000 family of movements is in-house, and related to the cal. 52000 and cal. 89000. It is not based on the architecture of the ETA 2892 as stated in an earlier version of the article. Additionally, the water-resistance of the watch is 60 m, and not 30 m.

Addition May 4, 2021: Heuer introduced the Seafarer in 1950.

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THE COLLECTIVE

European Watch Company – Est. 1993

Sailing Away: The IWC Portugieser Yacht Club Moon and Tide Reference IW344001

Published by samuel colchamiro.

View all posts by Samuel Colchamiro

IWC’s Portugieser line of watches has always been recognized as some of the best everyday watches. The model line brings classic layout to a sporty case dimension to form a sort of hybrid timepiece that is equally comfortable in many environments. The Portugieser Yacht Club Moon and Tide, reference IW344001 represents one of the latest additions to the Portugieser family, contributing new complications to the celebrated model line.

The IWC Portugieser collection was introduced in 1939 with the reference 325. Two Portuguese businessmen, Rodrigues and Antonio Teixeira, approached International Watch Company, proposing the construction of a stainless steel watch with marine chronometer precision. Subsequently, the reference 325 was born. Then considered a robust sports piece, the 325 was produced into the 50s, when the output began to sharply decrease for a variety of business related reasons.

Interestingly, IWC made many extra cases for the 325 which remained unused by the end of production. In the 1970’s, a Swiss retailer requested that IWC make a series of pieces utilizing the original cases that remained. The brand agreed, maintaining the original styling of the 325 but updating the movement to the caliber 982, which was significantly more refined than the caliber 98 of old, which had been better suited for a pocket watch than a wrist watch. After the success of this run, IWC ran a series of production runs for different European markets, including in 1979 for Germany and a 1993 limited edition in honor of the 125th anniversary of IWC. The 325 captures an essential portion of watchmaking history— the transition from pocket watches to wrist watches. Pieces like the 325 demonstrated the overall movement of the industry away from large pocket watches and towards wrist watches that provided the same chronometric precision and complication. 

Since the Portugieser’s rebirth, the model line has exploded into arguably the brand’s most recognizable design (up there alongside the Pilot models). In 2020, IWC launched the model we are covering today, the Yacht Club Moon and Tide reference IW344001 in 5n red gold. 

Design Details

The IWC Portugieser Yacht Club Moon and Tide, reference IW344001, is an interesting amalgamation of elements. Carrying the history of the Portugieser model line, with the sporty sizing of 44mm, strong lug presentation, and crown guards, the piece is simultaneously quite refined in some of its finishing details. Fashioned from solid gold with gold hands and applied indices, the piece is reminiscent of say the Rolex Submariner in yellow gold — it’s a robust design and history, but a luxury set of appointments and finishes. This versatility is both an attribute and a detractor depending on your preferences. 

Most interesting with this model is the unique combination of complications present on the piece. Displaying the moonphase in both the northern and southern hemispheres, and a low/ high tide indicator, the piece is the perfect companion for a mariner who enjoys mechanical complications. The strap is incredibly solid, made to resemble a rope texture (yet another nod to sailing), and is seamlessly custom integrated to the case. The strap is outfitted with a deployant clasp, an attribute that is particularly helpful on heavier watches like the Yacht Club. The case flanks are brushed and contrast with a polished bezel. The brushed finish continues to the sides of the lugs, with the dial side of the lugs also receiving high polish. IWC’s dial is a rich blue sunburst that adds to the warmth of the red gold case and further accentuates the nautical theme of the piece. 

Beyond the complications and adaptations made to accommodate them, the piece maintains the identity of earlier Portugieser models, with classic leaf-style hands (lumed in this case), arabic numerals, and large dial alongside a minimalist bezel. This design formula helped make the Portugieser a success in the past, and continues to attract a diverse collector pool in the modern era. 

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Inner Workings

IWC’s Moon and Tide reference IW344001 is powered by the automatic winding caliber 82835. The 82835 is well spec’d, with 60 hours of power reserve, but brings a considerable feature that many remain wholly unaware of: the Pellaton winding system. Developed by Albert Pellaton, the technical director of IWC until 1966, the unique mechanism uses a series of pawls to transmit the energy from the rotor to the mainspring. The most immediate benefit of the system is significantly greater resilience against shocks and vibrations, interference that can hurt the delicate gear train. It is always exciting to own a piece that incorporates a key development of that brand’s history. Owning an IWC with the Pellaton is analogous to a Breguet watch with a tourbillon— it’s special. 

IWC chose to skeletonize the bridge structure on the movement side in order to provide greater visibility into the componentry of the movement. This is certainly a more obscure method of skeletonization than say a skeleton dial, but it is quite an interesting approach that yields practically the same results without interfering with the dial side of the piece. Skeleton watches are polarizing — some love them, some hate them — but a skeleton movement doesn’t drastically impact the overall presentation of the watch when the dial is unaffected. 

The automatic winding rotor is inlaid with a rose gold medallion bearing the IWC branding. In equally sophisticated fashion, the base of the caliber is made from brass, consistent with tradition. The piece includes hacking seconds and IWC’s proprietary shock absorption system.

Versus the Competition

The most natural alternatives to the Yacht Club Moon and Tide reference IW344001 would be both of Rolex’s Yacht Master model lines. Fashioned from Rose Gold (options are available in white gold as well), the Yacht Master reference 126655 confers the same mix of precious metal and sports spec mentioned earlier. The Yacht Master is likely the archetypical representation of a luxury yachting watch.

Alongside the Yacht Master, the Yacht Master II is an equally common option. Also made from solid gold, the Yacht Master II provides a regatta timer chronograph with countdown mechanism. If you plan on timing races, this watch is the one for you. Of course, the IWC Yacht Club affords an entirely different set of complications, but if you are seeking out a recognizable regatta timer, this is the model to go for. 

For an entirely different take on the regatta timer, consider Richard Mille’s 50 piece limited edition RM 60-01 “St. Barth” . It’s a flyback chronograph with UTC function and 50 hours of power reserve. Made from titanium, this watch is nothing like the others, but is equally interesting, as one of RM’s only watches not to use the typical tonneau case shape. 

Personality

The collector that appreciates this type of watch likely enjoys sailing and/ or yachting. Some will actually use the complications present, exploiting the high and low tide indications as well as the moon phase in different hemispheres to help in navigational decisions. Seeing as most sophisticated modern ships provide this information equally, if not, more accurately, it is more likely that this watch is appreciated more for its ties to the nautical world than for its practical utility as a tool. 

Marine associations aside, the piece is equally wearable and interesting for a complete outsider. If you like larger wrist watches or obscure complications, the rose gold 44mm timepiece is quite charming on its own. 

Final Thoughts

The IWC Portugieser is one of the most successful design languages in the industry. Since its introduction, the Portugieser collection has grown to include a variety of complications, from chronographs, to perpetual calendars, to minute repeaters, to annual calendars. Each watch has its own character, but unique complications such as high and low tide indication and dual moon phases are the types of elements that watch collectors obsess over. Even if the complication is never used, the knowledge that a mechanical solution has been created to address the need for such information is the underlying philosophy that keeps collectors engaged and enthusiastic about watchmaking in the first place. 

See More of the IWC Portugieser Yacht Club Moon and Tide Reference IW344001

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Hands-On Debut: IWC Portugieser Yacht Club With New Moon & Tide Complication

In this, the year of our Portugieser 2020, IWC also just released some new Portugieser Yacht Club watches as part of Watches & Wonders 2020 . The Yacht Club has always been an interesting sub-category of the Portugieser, intended to be a sportier breed with features like rubber strap and lume. So far, IWC has only produced the Yacht Club in a flyback chronograph, but this year they’ve added a new model that boasts a new complication for the brand, as well, in the form of a Portugieser Yacht Club Moon & Tide model that has a moon phase and a new tide-tracking complication, which I believe is technically a Mareoscope.

The Portugieser Yacht Club Moon & Tide is debuting in just one variant, but it’s close to universally attractive, coming in a red gold case with brilliant blue dial with matching gold-plated hands and indices. At 12 o’clock, you can see the double moon phase display that shows Spring tides (which happen during full and new moons) and neap tides. At 6 o’clock is the subdial showing the anticipated times for high or low tide. IWC paid attention to the details here, with guilloché work, gold accents, and an applied gold plate around the circumference of the 6 o’clock subdial. As far as legibility goes, there is double-sided AR coating on the convex sapphire crystal, something I always appreciate.

It takes 24 hours and 48 minutes for the earth and moon to be in the same position, meaning that the time between two high tides is always 12 hours and 24 minutes. To measure the tides, IWC added a 49-part module to its 82835 calibre movement. Installing a three-cogged reducing gear to the hour pinion slows down the rotation of the tidal discs, allowing the disc to rotate around its axis every 14.76 days. Note that the time of the next tide is always approximate due to the fact that the discs are continually moving. So, if you’re checking at 10 o’clock AM and the indicator points to 12 o’clock, the tide will actually be slightly after 12. This discrepancy comes out to 10 minutes over 100 years.

It’s an uncommon complication on a mechanical watch, and I can only think of the Corum Admiral with a tide complication, a vintage Eberhard chronograph, and the Vacheron Constantin Les Cabinotiers Celestia from 2017 that include it. I do know that Sinn, as well as some vintage Heuers, have a less robust version of a tide complication.

Visible through the caseback of the IWC Yacht Club Moon & Tide, the 82835 calibre operates at 28,800 vph and has a 60-hour power reserve.

The red gold case measures 44.6mm-wide and 14.4mm-thick, with a water resistance of 30M, so wear it at the Yacht and/or Club but leave it out of the pool. IWC has added a new filigree bezel matched with a flat casing ring which help make for a pretty attractive-looking case that avoids being generic. And at 14.4mm-thick, the bezel adds a nice framing that ameliorates potential chunkiness.

While IWC introduced a bracelet to the Yacht Club Chronograph, the Moon & Tide comes on a blue rubber and textile strap that the collection has become associated with. Of course, the buckle matches the red gold case here.

The IWC Portugieser Moon & Tide is a cool and idiosyncratic piece that is marketed to a very, very niche type of buyer. The tide indicator is a difficult complication to pull off in a mechanical watch, which is why you rarely see it. For that, you have to give IWC serious credit. A gold watch with excellent finishing and a new intricately elaborate complication, the IWC Portugieser Yacht Club Moon & Tide is priced at $34,000 USD . You can learn more at iwc.com .

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IWC Schaffhausen

• Portugieser Collection
• Portugieser Yacht Club Moon & Tide

Portugieser Yacht Club Moon & Tide

18 ct 5N gold case, Automatic, self-winding, Diameter 44.6 mm.

Made in Schaffhausen, Switzerland.

AUD / Including GST

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Detailed features & specifications

A complex interplay of gravitational and centrifugal forces between the earth, the moon and the sun causes the tides. On most of the earth’s coasts, there are two high tides per day, always precisely 12 hours and 24 minutes apart. The Portugieser Yacht Club Moon & Tide indicates the expected times for the next high and low water on a subdial at “6 o’clock”.

This is achieved by a reduction wheel train which translates the regular rhythm of the hours into the constantly shifting time sequence of high and low water. The double moon phase display at “12 o’clock” has been enhanced to show spring and neap tides and therefore also informs about the strength of the current tides. Spring tides, which bring particularly high water, occur at full moon and new moon.

The tides are a timelessly fascinating spectacle: twice a day, the waves retreat from the shore before inexorably rising again. This natural phenomenon is caused by a complex interplay between the gravitational and centrifugal forces of the moon, the earth and the sun. The time between two high tides is precisely 12 hours and 24 minutes. If, for example, it is high tide at midnight, the next high tide will occur at 12.24. The Portugieser Yacht Club Moon & Tide shows the slightly shifting time for the next high tide on the dial. During the 12 hours and 24 minutes between two high tides, the display disc will rotate by around 24 minutes on its 12-hour scale. The energy required is channelled from the base movement’s hour pinion. A precisely calculated reducing gear comprising three cogs slows the rotation to the point where the tidal disc rotates around its axis once in exactly 14.76 days. The tidal display module is integrated into the 82835 calibre movement and contains 49 parts.

The 18-carat 5N gold case, blue dial, gold-plated hands and 18-carat gold appliqués underscore the maritime character of this timepiece. The IWC-manufactured 82835 calibre features a Pellaton winding system. Fitted with ceramic components, it boasts a power reserve of 60 hours.

• Movement : IWC-manufactured movement, Automatic, self-winding
• Calibre : 82835
• Crystal : Sapphire glass, convex, antireflective coating on both sides
• Functions : Tide indication, double moon phase for the northern and southern hemisphere with integrated display of neap and spring tide, Date display, Sapphire glass, convex, antireflective coating on both sides, Pellaton automatic winding, Central hacking seconds
• Water Resistance : 6 bar
• Bracelet Strap : Blue rubber strap with textile inlay
• Power Reserve : 60 hours

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IWC Schaffhausen Portugieser Yacht Club Moon & Tide

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IWC Portugieser Yacht Club Moon & Tide (Live Pics & Pricing)

A complication perfectly suited for the portugieser collection....

The IWC Portugieser was born in 1939 following a request from two Portuguese navigators and businessmen – Rodrigues and Teixeira – who wanted the precision of a marine chronometer in a wristwatch format. No need to say that this iconic IWC collection has strong ties to the nautical world. And to celebrate these roots, IWC is unveiling a new model today with an unprecedented complication that couldn’t be more appropriate: a tide indication. Encased in a sporty and large case, meet the new IWC Portugieser Yacht Club Moon & Tide. 

Introduced in 2010, the IWC Portugieser Yacht Club is a sports model in this rather elegant collection, with its nautical, yachting, regatta-ready note. More robust, larger, a bit more rugged and bulky, it has mostly favoured one complication until now, the chronograph – a world timer has also been available in the past. A versatile watch, capable of timing a sailing race but also at ease with a drink at the marina. In addition to the revamped chronograph collection, also introduced as part of the 2020 line-up, the Schaffhausen-based brand is also unveiling a brand new complication, with deep nautical roots: the new Portugieser Yacht Club Moon & Tide.

Visually, there’s not much that changes compared to the rest of the Yacht Club collection. We find the same 44.6mm case, here crafted in 18k rose gold (the only version available for the moment), with crown guards, robust lugs and a thin polished bezel opening on a large dial. In the same vein, the dial retains the classic leaf-shaped Portugieser hands, yet bolder and with lume, the railroad minute track with applied lume plots and signature Arabic numerals. Complementing the nautical look, this IWC Portugieser Yacht Club Moon & Tide is worn on a water-ready blue rubber strap with a sailcloth-like textile insert ( note: the photographed watch here is a prototype and the strap will be slightly different, with an integrated shape between the lugs ).

What changes, however, is the display.  Instead of the chronograph, there is now a novel indication, based on two sub-counters, linked to moon phases and tide calculations. A sub-dial at 6 o’clock indicates the expected times for the next high and low tide. The double moon phase display at 12 o’clock (with both hemispheres indicated) has been enhanced to show spring and neap tides and thus provides information about the strength of the current tides. Spring tides, which bring particularly high water, occur at full moon and new moon. Considering the vocation of the IWC Portugieser Yacht Club, it feels like a very appropriate complication!

The dial of this new watch has a blue sunray-brushed base with rose gold contrasting elements for the hands, the indexes and the secondary indications – a classic combination for IWC. Not to obscure the lower sub-dial, the date is positioned at 3 o’clock.

To power this new watch, IWC relies on its 82000-series base movement. The tidal display module is integrated into the novel calibre 82835 and contains just 49 individual parts. The base movement is familiar and boasts 60h of power reserve, features the Pellaton winding system and beats at 4Hz. It is visible through a sapphire display caseback and is finished in a pleasant way, with opened bridges that reveal most of the parts – including the ceramic, wear-free wheels.

The IWC Portugieser Yacht Club Moon & Tide (ref. IW344001) will be priced at CHF 35,000 or  EUR 34,900 . More details at iwc.com .

Technical specifications – IWC Portugieser Yacht Club Moon & Tide

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IWC Schaffhausen

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The Portugieser is one of the oldest and best-known watches from IWC. No other watch family incorporates so many of the technical tours de force of haute horlogerie.

Introducing: The Portugieser Eternal Calendar

A TRIBUTE TO ETERNITY

Portugieser Reference 325

At the end of the 1930s, IWC built at the request of two Portuguese merchants, a large wristwatch with the precision of a pocket watch. For this purpose, they used the pocket watch movement calibers 74 and 98. The noticeably large and striking wristwatch first was launched in 1939.

Portugieser Anniversary Wristwatch

On the occasion of the company’s 125th anniversary, IWC decided to bring the special large Portugieser watch back to life with a new limited edition. A special feature was the view of the movement through a transparent sapphire-glass back. The calibre 9828 in the modern Portugieser was based on the original pocket watch calibre 98.

Portugieser Minute Repeater

Shortly after the market launch of the Portugieser anniversary watch in 1993, a movement fulfilling the most exacting demands of high-end watchmaking began to appear in the collection: the Portugieser Minute Repeater (Reference 5240).

Portugieser Chronograph Rattrapante

A watch “that had never existed before, even back then” was the slogan at the unveiling of the Portugieser Chrono-Rattrapante (Reference 3712). It was an apt statement because it was the first time a Portugieser and a chronograph had been combined in the same case, and the result needed to be something extraordinary.

Portugieser Automatic 2000

To mark the start of the new millennium, IWC decided to write a new chapter in the history of Schaffhausen in the year 2000: the Portugieser Automatic 2000 (Reference 5000), with a completely newly designed movement. The 5000 calibre contained a power reserve of 7 days and the Pellaton winding system.

Portugieser Perpetual Calendar

In 2003 IWC launched the Portugieser Perpetual Calendar (Reference 5021). In a unique and very special way, this timepiece embodied all the watchmaking expertise of the Schaffhausen company. IWC combined its in-house 5000 caliber with the perpetual calendar module developed by Kurt Klaus.

Portugieser Tourbillon Mystère

With its iconic design, the Portugieser family had included almost every imaginable classic complication in the history of watchmaking. In 2004 the most mythical of them all, the tourbillon, was introduced. The Tourbillion Mystere (Reference 5042) was based on an IWC in-house construction from the 1990s.

Portugieser Yacht Club Chronograph

The Portugieser Yacht Club Chronograph (Reference 3902) is the sportiest timepiece in a watch family steeped in tradition. Originally, the Yacht Club was first launched in 1967 and became one of the most successful IWC watches of the 20th century. IWC decided to integrate the “new” generation of Yacht Club models into the Portugieser family.

Portugieser Sidérale Scafusia

In 2011, IWC bestowed upon the watchmaking world a masterpiece of haute horlogerie. The Portugieser Sidérale Scafusia (Reference 5041) represents 10 years of solid development work by a team of engineers, watchmakers and scientists. It is the most exclusive and complicated mechanical watch ever made by IWC.

Portugieser Annual Calendar

In 2015, IWC celebrated the 75th year of the Portugieser. The newly developed annual calendar complication displayed the month, date and day in three separate windows on the dial and required a manual adjustment just once every year.

Portugieser Constant-Force Tourbillon Edition “150 Years”

To mark its 150 year anniversary, IWC Schaffhausen presented the Portugieser Constant-Force Tourbillon Edition “150 Years”. Limited to just 15 pieces, this stunning platinum timepiece features a white dial with a lacquer finish and blue hands. The manufacture calibre 94805 combines for the first time a constant force tourbillon with a single moon phase display that needs to be corrected by just one day every 577.5 years.

Portugieser Yacht Club Moon & Tide

The Portugieser Yacht Club Moon & Tide represents a technical highlight. For the first time, in this model, IWC presents its newly developed tide indicator. A totalizer at “6 o’clock” shows the times of high and low tide. Positioned at “12 o’clock” is an IWC speciality, the double moon phase display. It has been expanded to show the spring and neap tides and thus provides more information about the strength of current tides.

IWC’s first secular perpetual calendar automatically accounts for the Gregorian calendar’s complex leap year exceptions by skipping three leap years over a 400-year period. In addition, its moon phase display is so precise that it will—theoretically—only deviate by one day after 45 million years.

DESIGN HIGHLIGHTS

The Portugieser – a style icon

The iconic design of Portugieser watches, with their imposing size, simple Arabic numerals, slim feuille hands and railway-track-style chapter ring, originated in the 1930s, when it was well ahead of its time. Today, the original, clearly organized dial with its simple design remains an unrivalled style icon.

Featured Portugieser Watches

With a design that is as crisp as it is timelessly modern, the IWC Portugieser has turned into an icon of watchmaking.

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CHF 19'000

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Professional Watches

The 2020 Portugieser Yacht Club Moon & Tide

I WC’s new Portugieser Yacht Club Moon & Tide features a neap tide moon phase display for both hemispheres coupled with a high and low tide indicator function.

Presented in a 44.6 mm x 14.4 mm 18K red gold case with a blue sunburst dial and strap, the Portugieser Yacht Club Moon & Tide has a sophisticated mechanism developed by IWC which simplifies tides into high or low, and also whether they are neap or spring tides, via two displays, one at 12 o’clock and one a 6 o’clock.

Neap tides are the tides with the least difference between the high and low tides. They are the two lowest high tides of the month. Conversely, spring tides, a tide just after a new or full moon, have the greatest difference between high and low water. In addition to the strength of the tide, the display at 12 o’clock also shows the moon phases in both hemispheres (simultaneously).

Gold-plated leaf-shaped center-mounted luminescent hands display the hours and minutes, while a long gold-plated baton-shaped red-tipped hand shows the seconds. There’s a color-matched date indication at 3 o’clock.

The flange is gold-colored and has a 0-60 graduated seconds scale. Inside of this on the dial is a white printed railroad minute track with applied gold luminescent rectangular hour indices, and inside of that are gold printed Arabic numerals (except at 12 and 6 o’clock).

Animating the time functions and tide indicator is IWC’s caliber 82835 which has a Pellaton winding system fitted with ceramic components and is good for a power reserve of 60-hours. The movement has a skeletonized rotor, chamfered edges, Geneva striping, and a perlage decoration. The free-sprung balance wheel oscillates at 4Hz is mounted on a non-traversing balance bridge.

Completing the fashionable and luxurious new Portugieser Yacht Club Moon & Tide is a blue rubber strap with a textile inlay and 18K red gold buckle. (Ref. 344001

Retail is $33,100.

Photos by IWC.

Posted by: Staff

IWC Schaffhausen

Portugieser yacht club moon & tide, specifications.

Automatic, Self-winding

18ct 5N Gold

Blue dial with luminescence

28'800 Vibrations per Hour

Blue Rubber Strap With Textile Inlay

Tide Indication, Double Moon Phase For The Northern And Southern Hemisphere With Integrated Display Of Neap And Spring Tide, Date Display, Sapphire Glass, Convex, Antireflective Coating On Both Sides, Pellaton Automatic Winding, Central Hacking Seconds

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IWC Portugieser Yacht Club Collection Reboots with Chronographs, Moon & Tide Edition

IWC Schaffhausen has put the spotlight on its elegant Portugieser family in 2020, and as part of its new lineup has also unveiled the first new models in the nautical-inspired Portugieser Yacht Club sub-series since its last revamp in 2010. These include three new chronograph models as well as the Yacht Club Moon and Tide, the first IWC timepiece with a tide indicator.

The Moon and Tides is the most intriguing new Yacht Club edition and the only one in a full rose-gold case. Measuring 44.5 mm in diameter and 14.4 mm thick, the case houses behind its navy blue dial the in-house, automatic Caliber 82835, enhanced here for the first time with a tides display function. Developed for the yachtsmen whose passion inspired the collection, its useful features include the subdial at 6 o’clock which indicates the expected times for the next high and low water, along with the double moon phase display at 12 o’clock, which shows spring and neap tides as well as information about the strength of the current tides. (Spring tides, which bring particularly high water, occur at full moon and new moon.) The plating on the hour and minute hands and the hour appliqués are in the same 5N rose gold as the case.

The automatic Caliber 82835 beats in full view behind a sapphire caseback. Outfitted with the all-new module for the tide displays and incorporating IWC’s Pellaton winding system with high-tech ceramic components, it stores a respectable power reserve of 68 hours. The watch is mounted on a blue textile strap that echoes the maritime theme of the dial, and of the watch itself.

The latest versions of the Portugieser Yacht Club Chronograph include two in stainless steel cases with steel bracelets — one with a silvered dial with blue highlights, the other, a blue dial with white details — and one two-tone steel-and-rose-gold model with a silvered dial, whose gold details include the hands, hour numerals, bezel, and the center links of the bracelet. The cases measure 44.6 mm, the same as the Moon & Tides model, and the dial layout showcases the user-friendly chronograph readout at 12 o’clock, which tallies both elapsed hours and minutes on a single subdial.

The movement inside the Yacht Club Chronographs is IWC’s self-winding Caliber 89361, manufactured in-house and boasting a 68-hour power reserve. In addition to the single-totalizer display for the stopwatch hours and minutes, its built-in chronograph includes a flyback function that enables the wearer to return the hands to zero and instantly begin a new timing sequence. The watch also has a hacking seconds function and a small-seconds and date display in a single subdial at 6 o’clock. The bracelets, like the cases, offer a combination of brushed and polished finishes.

Prices for the 2020 IWC Portugieser Yacht Club editions are as follows: $33,100 for the Moon & Tides, $13,100 for the steel Chronographs, and $19,900 for the bicolor steel-and-gold Chronograph. Keep following WatchTime.com for updates and more notable timepieces from Watches & Wonders 2020.

Beautiful watch with huge mistake. Yachting watch with 60 meters water tightness???? Very sad. I would buy it otherwise.

What about water tightness?

Hi Csaba, the Yacht Club Chronograph has a water resistance of 3 bar.

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Portugieser Yacht Club Moon & Tide

The Portugieser Yacht Club Moon & Tide Story

A complex interplay of gravitational and centrifugal forces between the earth, the moon and the sun causes the tides. On most of the earth's coasts, there are two high tides per day, always precisely 12 hours and 24 minutes apart. The Portugieser Yacht Club Moon & Tide indicates the expected times for the next high and low water on a subdial at "6 o'clock". This is achieved by a reduction wheel train which translates the regular rhythm of the hours into the constantly shifting time sequence of high and low water. The double moon phase display at "12 o'clock" has been enhanced to show spring and neap tides and therefore also informs about the strength of the current tides. Spring tides, which bring particularly high water, occur at full moon and new moon. The 18-carat 5N gold case, blue dial, gold-plated hands and 18-carat gold appliqués underscore the maritime character of this timepiece. The IWC-manufactured 82835 calibre features a Pellaton winding system. Fitted with ceramic components, it boasts a power reserve of 60 hours

Calibre Family 82000

The IWC-manufactured 82000 calibre ties in with the tradition of high-quality automatic movements from IWC. It is fitted with the highly efficient IWC Pellaton automatic winding system, which uses both directions of the rotor to wind the mainspring. As in the IWC-manufactured 52000 calibre family, components in the system subject to pronounced stress, such as the pawls, the automatic wheel, or the cam, are made of ceramic. Thanks to the use of this high-tech material, they are virtually wear-free. The efficient automatic winding system builds up a power reserve of at least 60 hours in the mainspring. The indexless balance with a flat coil oscillates at a frequency of 4 hertz (28,800 beats per hour), ensuring a high level of precision. The rotor is skeletonised and offers a view of the movement decorated with circular graining and Geneva stripes.

Tide Indication

The tides are a timelessly fascinating spectacle: twice a day, the waves retreat from the shore before inexorably rising again. This natural phenomenon is caused by a complex interplay between the gravitational and centrifugal forces of the moon, the earth and the sun. The time between two high tides is precisely 12 hours and 24 minutes. If, for example, it is high tide at midnight, the next high tide will occur at 12.24. The Portugieser Yacht Club Moon & Tide shows the slightly shifting time for the next high tide on the dial. During the 12 hours and 24 minutes between two high tides, the display disc will rotate by around 24 minutes on its 12-hour scale. The energy required is channelled from the base movement’s hour pinion. A precisely calculated reducing gear comprising three cogs slows the rotation to the point where the tidal disc rotates around its axis once in exactly 14.76 days. The tidal display module is integrated into the 82835 calibre movement and contains 49 parts.

The Portugieser Yacht Club

Since 2010, the Portugieser Yacht Club has brought a sporting note to the family. As a nautical sports watch, it combines timeless elegance with ruggedness and high water-resistance. These characteristics make the Yacht Club an extremely versatile watch that cuts a fine figure on both water and land.

About IWC Schaffhausen

In 1868, the American watchmaker and entrepreneur Florentine Ariosto Jones travelled from Boston to Switzerland and founded the “International Watch Company” in Schaffhausen. His visionary dream was to combine advanced American manufacturing methods with the craftsmanship of Swiss watchmakers to make the best pocket watches of his time. In doing so, he not only laid the foundation to IWC’s unique engineering approach but also established the centralized production of mechanical watches in Switzerland.

Over its 150 year history, IWC Schaffhausen has developed a reputation for creating functional complications, especially chronographs and calendars, which are ingenious, robust and easy for customers to use. A pioneer in the use of titanium and ceramics, IWC today specializes in highly engineered technical watch cases manufactured from advanced materials, such as titanium-aluminide and Ceratanium®. Preferring the principle of “form follows function” over decoration, the Swiss watch manufacturer’s timeless creations embody their owners’ dream and ambitions as the journey through life.