Casio Sea Pathfinder. I was given one for Christmas by The Admiral. Can't say as there's a single thing I don't like about it. And as for LARGE numerals: It's got VERY LARGE
The watch has a very
nice race start count-down. Its count-down timer can work either of two ways: Go automatically into stopwatch mode after the count-down has elapsed (useful for racers), or start a new count-down (useful for the RC).
Btw: On the off chance said boat has a Raymarine
ST60+ knotmeter: That's got a built-in race start timer that does both 10- and 5-minute count-downs.