As early as the mid ‘50s, TUDOR diving watches were being tested and evaluated by a number of outfits inside the US Navy; by 1958 they were officially adopted by the Navy and purchased for the purpose of issuing them to divers operating in various units. This Pelagos FXD model is the spiritual successor of those watches and represents a modern, high-performance and robust take on the famed “Milsub” (short for Military Submariner) of yesteryear. Visually, it’s most in line with a late ‘60s-era TUDOR Oyster Prince Submariner reference 7016; it incorporates elements from the US military specifications for diving watches.