The Duties of OS (Ordinary Seaman) Onboard Ship are an important part of the deck department. The OS is considered a trainee or entry-level rank in the merchant navy, but the role provides hands-on experience in seamanship, navigation support, and ship maintenance. Working under the supervision of the Bosun (Boatswain), Able Seaman (AB), and deck officers, the Ordinary Seaman learns essential skills that form the foundation of a successful maritime career.
For many seafarers, the Duties of OS Onboard Ship act as a stepping stone to higher positions such as Able Seaman, Bosun, and even Deck Officer. This stage of training and hard work helps develop practical seamanship knowledge, discipline, and teamwork.
Key Duties of an Ordinary Seaman Onboard Ship
The responsibilities of an OS may vary slightly depending on the ship type and company, but the core duties remain the same.
1. Deck Maintenance
- Carry out chipping, painting, and greasing of deck equipment.
- Clean decks, railings, and cargo areas.
- Assist in repairing ropes, wires, and deck fittings.
2. Cargo Operations Support
- Help in loading and unloading cargo.
- Handle mooring ropes during port operations.
- Assist Able Seamen and Bosun in securing cargo gear.
3. Navigation Watch Duties
- Stand lookout watch on the bridge, reporting lights, vessels, and obstacles.
- Assist the officer of the watch during navigation.
- Steer the ship when assigned (after proper training).
4. Safety Duties
- Participate in emergency drills such as fire, abandon ship, and man overboard.
- Assist in maintaining lifesaving and firefighting equipment.
- Ensure safety gear is in good condition.
5. General Assistance
- Support Able Seamen and Bosun in daily tasks.
- Help in anchoring, mooring, and unmooring operations.
- Perform housekeeping duties in the deck department.
Life of an Ordinary Seaman Onboard Ship
Life as an OS is physically demanding and requires long hours of work under all weather conditions. The role is focused on learning through practice, which makes it ideal for those starting their seafaring journey. Over time, with experience and additional certification, an Ordinary Seaman can be promoted to Able Seaman and progress toward officer ranks.
Salary of an Ordinary Seaman in Merchant Navy
The salary of an OS depends on the vessel type and company. On average:
- Dry Cargo Vessels: USD 400 – 600 per month
- Tankers: USD 500 – 800 per month
- Offshore Vessels: USD 600 – 900 per month
In addition to salary, OSs receive free food, accommodation, and travel while onboard.
Conclusion
The Duties of OS (Ordinary Seaman) Onboard Ship involve hard work, discipline, and teamwork. Though it is an entry-level position, it lays the foundation for a successful career in the deck department. From deck maintenance to navigation support, the OS plays a vital role in the smooth operation of the vessel while gaining valuable seamanship experience.
Disclaimer
This blog is for informational purposes only. Actual duties and salaries may vary depending on the vessel type and company policy.
