Re: Recommendation for a handheld GPS for hiking and marine use.
hello @Kingdw , 1 word - GAIA GPS APP FOR IPHONE, ok that's 5 words, but I just checked and they have USACE river charts, and NOAA charts, as a map download. As well as all the functions of a GPS unit.
The big plus is, you're looking at your phone screen, which has much more visibility than most GPS unit windows, and you don't have to have another device to carry, charge up, etc.
Depending on the level of detail you are looking for, @Philreedshikes advice may be just what you're looking for. In terms of handheld units, we have a couple of models of GPS units that can be used for both hiking and marine use. Take a look at these models: