What is the difference between a handheld GPS and a marine GPS?

A handheld GPS is designed for general outdoor use, while a marine GPS is specifically tailored for use on boats and ships. The main difference lies in their features and capabilities. A handheld GPS is compact, portable, and usually battery-powered, making it perfect for hikers, campers, and outdoor enthusiasts. It typically offers various navigation functions like maps, waypoints, and tracks, but may lack specialized marine features. On the other hand, a marine GPS is engineered to meet the demands of the marine environment. It offers additional functionalities such as chart plotting, depth sounder integration, fishfinder capability, and real-time weather and tide information. Marine GPS units have larger screens for better visibility in bright sunlight and are often water-resistant or even waterproof. They can connect with other marine electronics systems, such as autopilots and radar, to provide comprehensive navigation and safety features for boaters and sailors.