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The Surprising Yema Yachtingraf Tourbillon Mareographe for the Brand’s 75th Anniversary

What better way to celebrate an anniversary with friends than by offering them a tourbillon to enjoy?

| By Denis Peshkov | 3 min read |
Yema Yachtingraf Tourbillon Mareographe

Yema, the French watchmaker, has a history and a notable presence in the world of horology. Established in 1948, Yema is known for its diverse range of timepieces, crafted for various purposes, from diving to racing and aviation. One of the distinctive aspects of Yema watches is their fusion of functionality and style. To celebrate its 75th anniversary, Yema introduces the Yachtingraf model, incorporating the intricate craftsmanship of a tourbillon with the functionality of a tide complication, catering to those who appreciate both technical innovation and practical utility.

The Yachtingraf Tourbillon Maréographe harmoniously merges sportiness and elegance in its case design, predominantly brushed for a well-balanced aesthetic. With a water resistance of up to 100m, the case comes in steel or bronze, measuring 42.5mm in diameter and 12.3mm thick (14.5mm with the double-domed 2.20mm high sapphire crystal). The unidirectional rotating bezel is equipped with a sapphire crystal insert, graduated in 5-minute increments, and a triangular luminescent marker at 12 o’clock adds a touch of sophistication. The caseback is transparent to demonstrate the Tourbillon Maréographe movement’s architecture and finish.

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The black dial features a sunray finish and Super-LumiNova-coated applied indices. Indices, hands, and other elements are presented in matching colours depending on the case material. The Maréographe complication is positioned above the centre and introduces blue and red hues, with a small hand adorned with Yema’s logo indicating tide cycles. This hand points to high and low tides, making gradual half-revolutions every 6 hours, 12 minutes, and 7.89 seconds, completing a full circle rotation in approximately 12 hours and 25 minutes, passing Descendante – Marée – Montante indications. The tidal cycles, linked to the Moon’s gravitational forces during its rotation around the Earth, are precisely displayed by integrating lunar time to synchronize tides with local time.

At 6 o’clock, the 60-second tourbillon of the Calibre Manufacture Morteau 30 (CMM.30) takes centre stage, embodying the same robustness that defines the timepiece. Designed by Olivier Mory, a French movement developer in La Chaux-de-Fonds, this calibre incorporates non-magnetic components, such as a non-metallic alloy hairspring, a Glucydur balance wheel with an adjustment mass made in gold, and micro-components manufactured with LiGA technology. This ensures the movement can withstand electromagnetic exposure up to 2,000 Gauss.

The tourbillon cage bridge, free-sprung balance wheel, and shock absorbers make the CMM.30 impervious to shocks, vibrations, and accelerations up to 5,000 Gs. Adjusted in 6 positions, the CMM.30 guarantees near-chronometer accuracy between –3 and +7 seconds per day, all powered by a single barrel providing 105 hours of reserve. Among other achievements, Olivier Mory was responsible for developing a tourbillon-equipped calibre for the BA111OD brand, offering Swiss-made tourbillon watches at very attractive prices.

So, it is no surprise that the Yachtingraf Tourbillon Maréographe is priced at EUR 9,990. Yema will produce steel and bronze editions limited to 75 numbered timepieces each. The Yachtingraf Tourbillon Maréographe is worn on a comfortable strap made from premium rubber, closed by a steel or bronze folding clasp, depending on the case material. For more information, please visit

1 response

  1. Ruined by the bezel. I would have left that off and instead added aventurine, meteorite or other dial texture


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