Orientation is vital at sea because it’s easy to get disoriented. The ocean is vast, and there are no roads, signals, or lights to guide your way. There’re plenty of hazards such as waves that can through you off course. This is why it’s always important to know exactly where you are.
A marine GPS is the easiest way to navigate a boat. Without GPS orientation, it would be quite difficult for recreational sailors and anglers to get to where they desire to go and find their way back without getting lost. This is especially important on a large body of water.