When Captain Robert “Bob” Maloubier established the French version of the Navy Seals–“Nageur de Combat” — in the late 1940s, he ran through a mental checklist of must-have items: Diving fins? Check. Goggles? Check. Diving suits? Check. Dive watches? Wait a second, Maloubier, thought. Why didn’t this elite team of divers have watches to help…