A surveillance vessel is a type of ship designed for monitoring and gathering information in various maritime environments. These vessels are equipped with advanced technology, such as radar, cameras, and sensors, to track activities at sea, including illegal fishing, smuggling, or environmental violations. They play a crucial role in maritime security and law enforcement. Surveillance vessels are often operated by government agencies, such as the Coast Guard or navy, and can be used for research purposes as well. They help ensure safety in international waters and protect marine resources, contributing to the overall management of oceanic ecosystems.