Officer of the Watch (OOW)

The designated officer responsible for the safe navigation and operation of a vessel during their assigned watch period. 

The Officer of the Watch (OOW) is a key role on a vessel, ensuring the ship’s safe passage and adherence to regulations while on duty. The OOW is responsible for maintaining a proper lookout, monitoring navigational equipment, and making course adjustments as necessary. They must also ensure compliance with the International Regulations for Preventing Collisions at Sea (COLREGs) and respond to any emergencies or changes in conditions. 

On larger vessels, the OOW typically reports to the Master and may be supported by a helmsman and lookout. They must be aware of the vessel’s position, weather conditions, traffic, and any potential hazards. If any situation arises that requires higher authority, the OOW must notify the Master immediately. 

To qualify as an OOW, officers must hold the appropriate certification, which varies depending on the vessel type and jurisdiction. Their role is critical in ensuring the safety of the vessel, crew, and cargo while at sea.