Charting Its Course
Style of the Yacht-Master II
The Yacht-Master II’s bold and distinguished marine character is firmly in line with the spirit of the Oyster Professional watches. The regatta chronograph’s clear display epitomises Rolex's constant attention to detail.
Its red-contoured countdown arrow and the seconds hand are readable at a glance against the dedicated 10‑minute countdown graduation on the dial and the graduations on the bezel.
Function of the Yacht-Master II
As in any contest of speed, precision is of the essence in a regatta. The Yacht-Master II features an unprecedented mechanical function: a countdown that can be programmed from 1 to 10 minutes and allows skippers to precisely time and follow each race’s official starting procedure.
This flexibility is one the major assets of the Yacht-Master II; its development was a considerable technological challenge. The programming can be mechanically memorised. Furthermore, once the watch’s countdown is launched, it can be synchronised on the fly to match changes in the official race countdown.
MAXI YACHT ROLEX CUP
Spirit of the Yacht-Master II
Yachting has an elegance that the sport’s harsh conditions cannot obscure. Along the Sardinian coastline, commanding yachts cut through the Mediterranean with agility and apparent ease. But the idyllic scene belies the competitiveness, for this is an event where the crews are determined to win.
The Parachrom Hairspring
In a mechanical watch, the oscillator is the guardian of time. Conventional oscillator hairsprings are made of ferromagnetic alloys, leaving them vulnerable to magnetic fields, temperature variations and shocks that interfere with their precision. After years of research, Rolex created the blue Parachrom hairspring, which is finer than a human hair.
Crafted from a highly stable paramagnetic alloy that includes niobium and zirconium, it is insensitive to magnetic fields and up to 10 times more resistant to shocks. Historically, the unique blue color of the hairspring has been a sign of prestige reserved for only the most accurate timepieces.
The Triplock winding crown is a patented triple waterproofness system designed especially for divers’ watches. Developed by Rolex, it resists water pressure to depths of 300 metres (1,000 feet) on the Submariner models and some other Professional models, and 3,900 metres
(12,800 feet) on the Rolex Deepsea.
First introduced in 1970, the Triplock system consists of 10 different elements crafted from the most reliable materials. The winding crown screws down against the Oyster case as tightly and hermetically as a submarine’s hatch.
The Oyster bracelet is a perfect alchemy of form and function, aesthetics and technology. First introduced in the late 1930s, this particularly robust and comfortable metal bracelet with its broad, flat three-piece links remains the most universal bracelet in the Oyster collection.
The Yacht-Master II is equipped with calibre 4161, a self‑winding mechanical regatta chronograph movement entirely developed and manufactured by Rolex. The result of over 35,000 hours of development, the Yacht-Master II introduces a new regatta countdown with a unique, patented mechanical memory created by Rolex. A number of the 360 components in the 4161 movement are so tiny or complex that they can only be made by new, cutting-edge technology.
Like all Rolex Perpetual movements, the 4161 is a certified Swiss chronometer, a designation reserved for high-precision watches that have successfully passed the Swiss Official Chronometer Testing Institute (COSC) tests. Its architecture, in common with all Oyster watch movements, makes it singularly reliable.
Certified Swiss Chronometer
The four simple words Superlative Chronometer Officially Certified on a Rolex watch dial mean that the very movement inside the timepiece has endured 15 days and nights of testing by COSC (Contrôle Officiel Suisse des Chronomètres – Swiss Official Chronometer Testing Institute), an independent not-for-profit association. To receive COSC certification as a Swiss chronometer, a watch must demonstrate extreme precision in a variety of positions and temperatures. Rolex is unique in the industry: this is the standard level of quality required of every Rolex wristwatch movement.
The Yacht-Master II
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