Picking up a used 28.5 Hunter sailboat that has depth, speed and direction
gauges. I therefore need a new GPS unit since the old Garmin does not go
with the boat. The external GPS antenna stays with the boat.

What has me very confused is what maps are needed. We will be on the Hudson
River, perhaps Lake George and perhaps the area near the port of NYC and
along the near coast line.

With this in mind should I stay with a Garmin unit, or are there others out
there in the sub $600 price range that are musts for consideration?

What specific unit makes the most sense?

Richard