The world-branded Rolex sought to make a top-shelf version of the Rolex  Submariner diver's watch when they developed the Yacht-Master in 1992. Rumor has it that Rolex wasn't quite brave enough to make any big changes to the design of the Submariner itself, resulting in the Yacht-Master being adding to the catalog as its own model. Both models may look similar with the use of a dial topped with lume, a robust Oyster case, and a timing bezel, but they serve two very different functions. The Yacht-Master has become a highly sought-after timepiece since its release over 20 years ago, owing to a blend of bold aesthetics and quality craftsmanship. 
We can see from its name that the replica Rolex Yacht-Master was developed as a tool - replica watches for sailing, offering waterproof up to 330 feet via a Triplock screw-down crown, a maxi dial with fat hands and larger hour markers, a secure three-link Oyster bracelet, and a bidirectional rotatable timing bezel. Most references feature a bezel crafted from valuable metals and distinguished by a sand-blasted insert and raised high-polish graduations. It's worth noting that the Yacht-Master was initially only offered in an all-gold finish, with more affordable two-tone options hitting the market shortly after. Tapered lugs complement the luxurious style of the bezel nicely, giving the Yacht-Master a look that stands apart from its muse the Submariner.
Getting back to the Yacht-Master's status as a sports watch as well as a boating cheap replica watch, the bezel's primary function is to measure amounts of time while at sea as well as sync with race start times. You can expect some of its key functions to operate in the same way with a build similar to the Submariner. 
The first ten minutes on the bezel can be used to sync with Regatta start times, which can be done by aligning the zero position on the bezel with the minute hand, then using the 10-minute hashes to count down to the race start time. The bezel can also be set a certain amount of time into the future, allowing the minute hand to countdown towards that set time, essentially functioning as a timer.
Measuring elapsed time via the Yacht-Master bezel is pretty straightforward. At the very beginning, rotate the bezel in either direction to sync the zero position with the minute hand. The minute hand will point to the amount of time that has passed once finished.
All of these options are very much useful while sailing but have some applications towards life on land as well, making the Rolex replica Yacht-Master Rolex ideal for any lifestyle.