A deck officer is a member of a ship's crew responsible for navigation and the safe operation of the vessel. They oversee the ship's deck activities, manage cargo operations, and ensure compliance with maritime regulations. Deck officers typically hold specific ranks, such as second officer or chief mate, and are trained in navigation, safety procedures, and emergency response. Deck officers work closely with other crew members, including engineers and cooks, to maintain the ship's overall functionality. They use various tools and equipment, such as radar and GPS, to monitor the ship's position and course. Their role is crucial for ensuring the safety of both the crew and the vessel.