A seaman book is a crucial document for seafarers who work on ships, as it serves as an official record of their qualifications, training, and experience. It is a mandatory document required by maritime authorities to ensure the safety of seafarers and ships at sea. A seaman book contains essential information such as the seafarer's personal details, employment history, and training certificates. It also helps verify their competence and suitability for their job. Therefore, it is imperative for seafarers to keep their seaman book updated and valid, ensuring it is readily available for inspection during port calls or other official proceedings. A valid seaman book is vital for seafarers' career progression and ensures their safety at sea.