A marine GPS system is a specialized system for navigation on the water, whether it be inland rivers or the open seas most boat owners now consider marine GPS systems an essential part of their equipment. Special features such as waterproofing, sunlight friendly color displays, glove friendly buttons and ease of use make them useful to all types of mariners. Very specific information related to the sea beds, navigable channels and other useful maritime data allows boat captains to navigate safely. While the sea surface itself is relatively featureless, understanding the sea bed is imperative to the safety of vessels, and a much more detailed understanding provided by marine GPS system have saved many boats from running aground.

If you prefer a vehicle/boat mount unit, examine sizes, possible mount locations, antenna configurations etc. that are right for you. Consult your retailer for options. Some marine GPSs come with built-in fish finder features as well.