Hey fellas, about a month ago we decided to get in on the Seabass fishing by the San Diego wreck. I'd never been there before so I got some coordinates from the web. Seems they were useless because the format they used didn't match any of the three formats my Furuno offered. Is there a way to convert different formats to match what your machine uses without a degree from MIT?
You need to do a little arithmetic. No MIT degree required. The 3 typical formats are:
1) Decimal Degrees ie: 41.456° N
2) Degrees with Decimal Minutes ie: 41° 27.360 minutes N or 41° 27.36' N
3) Degrees, Minutes, Seconds ie: 41° 27 minutes 21.6 seconds N or 41° 27' 21.6"
OK, there are 60 minutes in one degree. There are 60 seconds in one minute. I am not talking about time BTW. Minutes and seconds are nautical talk for fractions of a degree. Minutes are usually symbolized by ', and seconds by ".
So to go from number 1 above to 2, take the 0.456 and multiply it by 60 to change the decimal degree to the amount of minutes. To go from 2 to 3, take the 0.360 and multiply it by 60 to go from the decimal portion of minutes to seconds.
To go in the opposite direction (3 towards 1) you must divide by 60 instead of multiplying.
The most common GPS unit lat / lon format is number 2.
I hope this cleared things up rather than make it even more confusing. Really just some basic arithmetic.