Stern trawlers are fishing vessels designed to catch fish using a large net called a trawl. The net is towed behind the boat, which allows for efficient capture of various fish species. These vessels are equipped with powerful engines and specialized gear to handle the demands of deep-sea fishing. The design of stern trawlers features a stern ramp, which helps in hauling the catch onboard. They are commonly used in commercial fishing operations and can operate in both shallow and deep waters. Commercial fishing is vital for supplying seafood to markets around the world.