Inputting GPS coordinates into my chart plotter

[jclays]

I'm in the process of inputting various coordinates into my new Garmin chart plotter. The chart plotter is formatted for DDD.MM.SSS my Map is DDD.MM.SS what number would I use for the 3rd place in the seconds portion of the coordinates string? Eg my map has 33 38.33' by 118 03.11' (should be a degree symbol over the 33 and 118) What do I input after the 33 and the 11 in the seconds part for the 3rd place?
Thanks

 

[Blue Heron]

I'm in the process of inputting various coordinates into my new Garmin chart plotter. The chart plotter is formatted for DDD.MM.SSS my Map is DDD.MM.SS what number would I use for the 3rd place in the seconds portion of the coordinates string? Eg my map has 33 38.33' by 118 03.11' (should be a degree symbol over the 33 and 118) What do I input after the 33 and the 11 in the seconds part for the 3rd place?
Thanks

A zero I think

 

[FlyWright]

The map says 33 38.33. This is DD MM.MM, not DD MM SS. If you want DD MM SSS for your chartplotter, then it is 33D 38M 20S (.33M x 60S/D=20S). If you need a third digit or tenths of a second, add a zero for 20.0S. For the longitude, it will be 118D 03M 06.6S.

Sometimes you'll see DD.DDD like 38.916D. This would be 38D 54M 57.6S. (.916 x 60 = 54.96M - 54=.96S x 60 = 57.6S)