Yachtingraf Tourbillon Mareographe 75th Anniversary Steel - Ltd Ed 75pcs

Yema is a name that was born in 1948, created by Henry Louis Belmont, who was a graduate from the National Watchmaking School of Besancon in 1931. The name stayed till today and lingered very well especially within the dive-watch community, a name that is synonymous with fine French horology.


Mr. Belmont created Yema who specialized in the manufacturing well-built watches at an honest price (Gnomon’s philosophy), which led the brand to take off during the 1960s era. Some of them do ring a bell for vintage watch collectors, for an instant, the 1960s Flygraf pilot chronograph (air), Rallygraf racing chronograph (land) and Yachtingraf regatta chronograph (sea). Further, let’s not forget the one and only diver collection that stamps this French maestro into the watchmaking legacy- the legendary Superman diver.

Yema Yachtingraf Tourbillon Mareographe 75th Anniversary Steel - Ltd Ed 75pcs

In commemoration of its 75th anniversary, Yema unveils the Yachtingraf model, seamlessly blending the intricate craftsmanship of a tourbillon complication with the practical functionality of a tide complication. This unique timepiece is designed to cater to individuals who value both technical innovation and practical utility in their watches. Best yet, one is able to obtain a tourbillon movement for less than $10000USD! The timepiece further marks the 75th anniversary of YEMA and its gradual transition towards a vertically integrated watchmaking Manufacture.

The case design of this timepiece seamlessly marries sportiness with elegance, guaranteeing a water resistance of 100m. Crafted in 316L stainless-steel, the case exhibits various finishes, including vertical brushing and polished beveled lugs, along with a circular brushed bezel. With a contained diameter of 42.5mm and a thickness of 12.3mm (14.5mm including the double-domed sapphire crystal), it strikes a harmonious balance, offering well-proportioned dimensions for this exceptional watch.

The unidirectional rotating bezel stands out with its opulent finishes, as it is meticulously crafted from scratch-resistant, slightly domed sapphire. This demands a sophisticated and time-intensive manufacturing process, reflecting the commitment to luxury. The bezel is adorned with an insert featuring a minimalist 0-60 graduation and a luminescent marker at noon.

Yachtingraf iconic dial

Enhancing its collector's appeal, this timepiece boasts a high-quality double-domed sapphire crystal, measuring 2.20 mm in height. This crystal not only ensures improved readability but also enhances resistance, all while embracing a distinctly vintage aesthetic.

Underneath the crystal, the dial draws inspiration from the aesthetic codes of the iconic 1970s Yachtingraf model. Showcasing a sunray black finish, it incorporates applied markers coated with Super-LumiNova. The vibrant Maréographe register, reminiscent of the vintage Yachtingraf model with a regatta-style influence, is complemented by a tides indicator in the form of a small hand elegantly adorned with YEMA's logo. Adding to the visual allure, the 60-second tourbillon creates a mesmerizing kinetic spectacle, beating and turning against the partially open dial.

The transparent exhibition caseback provides a captivating view of the beating heart within, showcasing the distinctive architecture of the CMM.30 tourbillon caliber. This feature offers a fascinating experience for true enthusiasts who appreciate the intricacies of watchmaking. Adding a personalized touch, the outer ring of the caseback is elegantly engraved with a unique Limited Edition number (XX/75).

Double dome sapphire bezel & crystal

Now onto the star of the show. The Calibre Manufacture Morteau 30 (CMM.30) tourbillon unique's design ensures superior performance, combining clever architecture and high-quality Franco-Swiss components. Crafted entirely by Olivier Morya, a renowned French watchmaking developer based in La Chaux-de-Fonds, the regulating organs are made in Switzerland, while YEMA manufactures the bridges and mainplates in its Morteau workshops.

With its Swiss regulating part, the CMM.30 tourbillon achieves high precision, ensuring lasting accuracy and stability. The free-sprung balance wheel regulates isochronism, enhancing precision and stability over the long term. Adjusted in six positions, the CMM.30 guarantees an accuracy of -3 to +7 seconds per day.

The CMM.30 features a single large barrel optimized for a 105-hour power reserve. Specifically crafted for the CMM.30 by Générale Ressorts, this barrel is strategically positioned off-center to accommodate gears and the balance wheel, maintaining a compact thickness.

Super-LumiNova glows in the dark

The tourbillon escapement boasts innovations that reduce friction, thanks to a sophisticated manufacturing process (LiGA technology). This advanced escapement optimizes the entire mechanics, ensuring precision and longevity of the caliber components.

Equipped with non-magnetic components, including a Swiss-made non-metallic alloy hairspring, a Glucydur balance wheel with a gold adjustment mass, and micro-components made with LiGA technology materials, the CMM.30 can withstand exposures to electromagnetic fields up to 2,000 Gauss—an impressive feat for a tourbillon caliber.

The architecture of the tourbillon cage bridge, featuring a free-sprung balance wheel and shock absorbers manufactured by Kif, renders the CMM.30 impervious to shocks, vibrations, and accelerations up to 5,000 Gs in all directions.

Caliber designed and developed by Olivier Mory

Although the in-house tourbillon is the primary complication, The Maréographe consists of a tide complication placed in an elegant register. To make this magnificent phenomenon of nature visible, an elegant small hand indicates high and low tides by making gradual half-revolutions every 6h 12m 7.89s (change from high tide to low tide and vice versa) and a full revolution every 12h 25m 15.79s.

The watch is finally fitted with a 20mm black rubber strap, in effort to remind one that this is still a proper sports watch from the French maison. Made from premium quality FKM Viton® rubber, providing utmost durability while remaining easily pliable, comfortable, dust repelling and highly resistant to tearing. The elegant folding clasp in brushed steel adds style and comfort.

Limited to 75 pieces, the Yema Yachtingraf Tourbillion Mareographe thoroughly showcases the brand’s savour faire. All of its tourbillon movement components, including the watch case, dial, and hands, are manufactured in France and Switzerland within a range of 72km from Morteau by recognized craftsman in fine watchmaking. Even rhe caliber bridges and mainplates are manufactured in YEMA’s workshops in Morteau where final assembly of all components takes place. What’s a better way to celebrate Yema’s 75th birthday?

Video is not available