Diving Lake Michigan

[fishchaser]

Hmmmm....then it wouldn't exactly be seconds anymore. It would be degrees, minutes, and a decimal fraction of a minute. Or, DD MM.mmmmmm, with as many or few m's as you wish.

I looked at my boat's GPS yesterday, and found that you can program waypoints a few different ways, but the standard display is DD° MM.mmm', as you suggested. There's no ambiguity, as it's clearly labeled degrees and minutes. No seconds symbol ("). The Wisconsin Historical Society's Shipwreck website doesn't have a legend of what they are using for a method, or any units. Their cordinates are listed like: 43.01.44 So it's unclear if that's dd.mm.ss or dd.mm.mm. If they'd list it like: 43 01.44 that's much easier to guess.

Sorry, don't mean to beat this to death. Thanks for your input. Maybe I should volunteer to update the WHS database for them. ;D