Ulysse Nardin is in its element when venturing on the high seas, as evidenced by this latest creation. In the innovative Grand Deck Marine Tourbillon model, the retrograde minutes display takes the form of a boom. The technology is visually fascinating, and as complex as it is accomplished. Linked to a 60-second flying tourbillon, this patented system is drawn by a super-strong hi-tech fiber that is thinner than a human hair. Impressive all-round, the timepiece showcases breakthrough technology in the unmistakable nautical-themed design of the Marine Chronometer family, of which it displays the legendary traits. The Manufacture, as a pioneer in marine chronometers, has a long and distinguished history of producing high-precision seafaring instruments that have helped conquer the oceans since the 19th century. This collection reinvents these tried-and-tested attributes for the modern era. Centuries of expertise and a tireless spirit of innovation have produced the Grand Deck Marine Tourbillon model, a watch worthy of the high seas.
In a proud nod to its maritime roots, the Grand Deck Marine Tourbillon model incorporates the elements of a ship’s deck to display the time in a creative and original manner. The minutes hand is replaced by a boom – the horizontal spar used to angle the head sail. Working like the halyard cord that is used to hoist the sails of a ship, a wire pulls the boom across a graduated arc. The boom jumps back once an hour, its speed regulated by a purpose-designed retrograde mechanism. The mesmerizing leap takes 3 to 4 seconds and can be viewed through the case back.
The boom is pulled by a nanowire that measures a mere 0.0357 mm in diameter and is capable of withstanding traction of 1.41 kg without stretching. The nanowire is made of polyethylene Dyneema® fiber, a material that is used in ship’s rigging and is many times stronger than steel. In a first for watchmaking, the transmission system loops the wires through a rigging screw: two strands are visible, and a third strand fastens the turn-buckle. The patented system, which is visible on the dial, is exclusive to Ulysse Nardin. Working like the winches that hoist the sails on deck, four ‘pulleys’ use a drive gear, a spiral tensioning spring and two lock pins. The jumping hour is driven by two large concentric disks that turn in real time, and is displayed through a double aperture. A corrector positioned at 2 o’clock can be used to set the time quickly.
The Manufacture’s Caliber UN-630, a 60-second flying tourbillon with manual-winding movement, contains 469 components and oscillates at a frequency of 3 Hz. Despite the considerable power requirements of the boom display, the movement offers optimal precision and a generous power reserve of over 48 hours. A first barrel is devoted to the time-telling mechanism; a second barrel supplies power to the complication, i.e. to the display of hours and minutes. The latter device is regulated by a specific escapement that collects information from the time-telling mechanism. The double-barrel design (one for the movement and another for the display) prevents the complication from interfering with the workings of the watch. To the rear of the movement, the leading and unloading of the balance spring can be viewed through the skeletonized barrels, a feature that is both functional and fascinating. When the watch is wound, the spring winds up into the center of the barrel. Conversely, when the spring is spent it unwinds out towards the edge of the barrel.
This timepiece is exclusive by nature, available in a limited edition of 18 pieces on an alligator strap with a white-gold folding buckle.
externe bron door : Equwatch.com