spawnout,

i've always used garmin gps's. i have a gpsmap175 and one of the fixed mount gps's for my big boat. they both accept the garmin g-charts... which do show the waadah island breakwater and the breakwater around the marina. for marine navigation with a gps, most of the mapping features besides the g-charts (for garmin products) are worthless. roads don't make much difference out in the ocean, but a map showing wash rocks can.

for garmin products and saltwater use, i'd strongly recommend buying gps's that are g-chart compatible.

chris