The Fifty Fathoms is the origin of modern diver's watches and has many anecdotes. This season's newly released model is crafted in stainless steel, symbolizing its history as a tool watch. However, its polished case also exudes the lustre befitting a high-end watch. Robust and elegant, this renowned masterpiece of a diver's watch has reached new heights.
Photographs by Takeshi Hoshi (estrellas)
Text by Tsuyoshi Hasegawa
Text by Tsuyoshi Hasegawa
Edited by Tomoe Kase
Edited by Tomoshige Kase
[Article published in the July 2025 issue of Kronos Japan]
The latest version of the historic diver's watch
Blancpain is a firm favorite among divers who venture deep into the ocean. A pioneer in the development of highly functional diver's watches, Blancpain continues to steadily evolve and is a true powerhouse of performance. Its icon is the Fifty Fathoms, launched in 1953. Its robust double-sealed crown and rotating bezel with a locking mechanism make it a model for modern diver's watches. The model's name comes from the maximum diving depth of 50 fathoms (approximately 91.45 meters) at the time. The numerous anecdotes surrounding its development are the romance of this watch and a major factor in its continued fascination with fans.
It was ocean explorer and film director Jacques-Yves Cousteau who made the name of this masterpiece diver known to the world. The Fifty Fathoms was the watch chosen by Cousteau and his production staff for the documentary film "Le Monde du Silence," released in 56. "Le Monde du Silence" won the Grand Prix at the Cannes Film Festival that same year, and the wrists of the characters in the film attracted a lot of attention.
It's not just divers who have recognized the Fifty Fathoms. Its exceptional capabilities are evident from its history of supply to the French Navy, the US Navy's Navy SEALs, and the German and Spanish militaries. Since its debut, the Fifty Fathoms has been water resistant to approximately 100m. This has now been extended to 300m. The current movement, Cal. 1315, is equipped with a silicon balance spring with excellent anti-magnetic properties, making it suitable for modern lifestyles. Its stamina is also noteworthy, with three barrels arranged in series providing a power reserve of approximately five days.
The "guardian of the sea" is already fully prepared, but the new 2025 model has been further updated. The case is made of stainless steel, giving it a package that strongly evokes the origins of a tool watch. The heavy, solid "iron" character of the watch gives it an outstanding sense of security as a companion for adventures, and the weight that is transmitted to the wrist brings joy to owning it.
The finishing touches are also meticulous. The fully polished case shines with a clear, mirror-like shine, giving it a sparkle that goes beyond that of a simple tool watch. The dial features a meticulous sunburst finish and features thick indexes and hour and minute hands coated with luminous paint, ensuring reliable visibility in both sunlight and dark conditions. The back is also a highlight. The see-through back reveals the uniquely designed automatic winding rotor. This rotor reproduces the design of the original 1953 model. While the NAC treatment gives it a matte finish, the edges and lettering deliberately expose the 18K red gold base. This adds a rich accent while highlighting the watch's history as the origin of divers' watches.
The Fifty Fathoms was first introduced to the world as a high-performance diver's watch approved by the military, and has continued to evolve into the present day in the 21st century. This model is an ambitious piece that remains committed to its origins as a professional tool, while also pursuing the elegance of haute horlogerie. The stainless steel bracelet model in particular is the perfect example of a dignified, high-end look. The Fifty Fathoms has evolved into a dignified beauty. Its "myth" has undoubtedly entered the next chapter.
The latest version of this historic masterpiece diver's watch. It's worth noting that it also boasts the aesthetic appeal of a luxury watch. Strap variations include a stainless steel bracelet, a tropic rubber (photo left) reminiscent of the original, as well as sail canvas and NATO straps. Automatic movement (Cal. 1315). 35 jewels. 28,800 vph. Power reserve of approximately 120 hours. Stainless steel case (diameter 42.30 mm, thickness 14.30 mm). Water resistant to 30 bar. (Right) 2,684,000 yen (tax included). (Left) 2,508,000 yen (tax included).
