A patrol craft is a small naval vessel designed for coastal defense and surveillance. These ships are typically equipped with weapons and sensors to monitor maritime activities, enforce laws, and protect territorial waters. They can operate in shallow waters and are often used by navies and coast guards around the world. Patrol crafts vary in size and capabilities, ranging from fast boats to larger vessels. They may be used for various missions, including anti-piracy, search and rescue, and environmental protection. Some examples of patrol craft include the Coast Guard Cutters and Fast Attack Craft used by different countries' naval forces.