Understanding the Role of a Trainee (TR) Ordinary Seaman (OS) on a Ship
A Trainee Ordinary Seaman (TR OS) is the first step in a seafarer’s journey in the deck department of a ship. This entry-level position is designed for individuals who are beginning their maritime careers and are in training to become fully qualified deck ratings. Despite being a trainee, the responsibilities are real, and the experience gained is crucial for future progression at sea.
Who Is a Trainee Ordinary Seaman (TR OS)?
A Trainee Ordinary Seaman, sometimes simply referred to as a TR OS, is a new recruit who has completed basic maritime safety courses, such as the STCW (Standards of Training, Certification and Watchkeeping for Seafarers), and is now gaining on-the-job training aboard a vessel. They work under the supervision of senior crew members, particularly the Bosun (boatswain) and Able Seamen (ABs), to learn the ropes—literally and figuratively—of deck operations.
Core Responsibilities of a TR OS
While a TR OS is in training, they are actively involved in the daily operations and maintenance of the ship. Their duties include:
1. Cleaning and Maintenance (Deck Work)
- Chipping, painting, and greasing to prevent rust and corrosion.
- Washing and scrubbing decks and equipment.
- Assisting in maintenance of deck fittings and cargo gear.
2. Mooring and Unmooring Operations
- Assisting during docking and undocking procedures.
- Handling ropes and mooring lines under supervision.
- Learning the safe use of winches, capstans, and other deck machinery.
3. Watchkeeping Duties
- Accompanying a senior deck rating or officer during navigational watches.
- Performing lookout duties—watching for other ships, obstacles, and navigational hazards.
- Reporting observations to the bridge in a timely manner.
4. Emergency Drills and Safety
- Participating in safety drills such as fire, abandon ship, and man overboard.
- Learning the location and use of life-saving and firefighting equipment.
- Keeping oneself familiar with safety procedures on board.
5. Cargo Operations Assistance
- Helping in loading and unloading cargo under the guidance of experienced crew.
- Observing safe handling procedures and securing cargo as needed.
6. Learning and Documentation
- Keeping a training record book (TRB), if applicable.
- Observing and understanding navigational instruments and procedures.
- Asking questions and learning from experienced crew members.
Skills and Qualities Required
To succeed as a TR OS, certain personal traits and skills are beneficial:
- Discipline and Punctuality: Ships operate on strict schedules; reliability is key.
- Physical Fitness: The job involves manual labor and requires strength and stamina.
- Teamwork and Communication: Working well with a multinational crew is essential.
- Willingness to Learn: A good attitude towards learning will speed up career growth.
Career Progression from TR OS
After gaining the required experience and fulfilling training requirements, a Trainee Ordinary Seaman (TR OS) can be promoted to Ordinary Seaman (OS).
- For seafarers who hold a G.P. Rating Certificate, a minimum of 6 months of sea service is required to qualify for the OS rank.
- For those sailing with an Open CDC (having only completed the STCW Basic Safety Courses), a minimum of 12 months of sea service is required.
Once promoted to OS, further experience and competence can lead to the rank of Able Seaman (AB). With additional qualifications and sea time, a seafarer may progress to Bosun, and eventually pursue officer-level certification—potentially becoming a Third Officer by attending maritime training institutions or through a rating-to-officer upgrade path.
This structured path ensures that all deck ratings develop the necessary skills and experience to contribute effectively to the safe and efficient operation of a ship.
Conclusion
The Trainee Ordinary Seaman role is foundational for anyone aspiring to build a career in the merchant navy’s deck department. Although the tasks may be basic and physically demanding, the learning opportunity is immense. This position serves not only as a job but as a stepping stone toward a structured and rewarding maritime career. With dedication, hard work, and continuous learning, a TR OS can rise through the ranks and become a vital part of a ship’s navigation and operations team.
