Ah, I was guessing feet, so I couldn't find anything. Apparently, the US is literally the only country not to use meters for depth: https://en.m.wikipedia.org/

Ah, I was guessing feet, so I couldn't find anything. Apparently, the US is literally the only country not to use meters for depth: https://en.m.wikipedia.org/wiki/Fathom https://en.m.wikipedia.org/wiki/Fathom