Ordinary seaman
Also known as: seamanship apprentice, OS, ordinary seawoman, seaman recruit
About this occupation
Ordinary seamen occupy the lowest rank of a maritime ship’s deck crew. They comprise the main labour force on board a boat where they help to operate the ship. They are supervised by the ship captain and the engineer, and can be given instructions by any individuals ranked above them.
Essential skills and knowledge
- unmoor vessels
- use different types of fire extinguishers
- vessel safety equipment
- load cargo onto ships
- maintain ship brightwork
- perform lookout duties during maritime operations
- clean ships
- operate life-saving appliances
- moor vessels
- principles of cargo stowage
- types of maritime vessels
- assist water-based navigation
Typical tasks and preparation
From the related US occupation profile Sailors and Marine Oilers (O*NET 53-5011.00). Linked by an official crosswalk: related, not identical; details vary by country.
- Maintain government-issued certifications, as required.
- Handle lines to moor vessels to wharfs, to tie up vessels to other vessels, or to rig towing lines.
- Stand watch in ships' bows or bridge wings to look for obstructions in a ship's path or to locate navigational aids, such as buoys or lighthouses.
- Splice and repair ropes, wire cables, or cordage, using marlinespikes, wire cutters, twine, and hand tools.
- Operate, maintain, or repair ship equipment, such as winches, cranes, derricks, or weapons system.
- Sweep, mop, and wash down decks to remove oil, dirt, and debris, using brooms, mops, brushes, and hoses.
- Preparation
- Job Zone 2 of 5
- Interests
- Realistic, Conventional, Investigative
Top skills: Operations Monitoring, Operation and Control, Monitoring, Equipment Maintenance, Troubleshooting, Repairing
US median pay: US$51,520 a year (2025), 31,670 employed. Source: U.S. Bureau of Labor Statistics, Occupational Employment and Wage Statistics.
Subjects this work relies on
How important each subject's knowledge is in the job itself, rated by people doing it (1 to 5).
- English or Literature in EnglishO*NET: English LanguageImportant (3.2)
- GeographyO*NET: GeographyImportant (3.0)
O*NET data describe work in the United States; requirements differ by country. This page includes information from the O*NET 31.0 Database by the U.S. Department of Labor, Employment and Training Administration (USDOL/ETA). Used under the CC BY 4.0 license. O*NET is a trademark of USDOL/ETA. CareerProof Global has modified all or some of this information; USDOL/ETA has not approved, endorsed, or tested these modifications.
Preparation needed
Job Zone 1-2: Very Little to Some Preparation Needed
- Education
- Usually requires a high school diploma or GED, though some occupations may not.
- Experience
- Some occupations may need little or no previous experience; others require several months to a year of experience. For example, landscaping and groundskeeping workers might require very little training or previous experience, while agricultural equipment operators can benefit from on-the job training.
- Training
- Ranges from a few days to one year of on-the-job training.
O*NET data describe work in the United States; requirements differ by country. This page includes information from the O*NET 31.0 Database by the U.S. Department of Labor, Employment and Training Administration (USDOL/ETA). Used under the CC BY 4.0 license. O*NET is a trademark of USDOL/ETA. CareerProof Global has modified all or some of this information; USDOL/ETA has not approved, endorsed, or tested these modifications.
Related occupations
Occupations O*NET links to this one by similar work, skills and knowledge.
- Captains, Mates, and Pilots of Water Vessels
- Ship Engineers
- Riggers
- Motorboat Operators
- Dredge Operators
- Hoist and Winch Operators
- Railroad Brake, Signal, and Switch Operators and Locomotive Firers
- Tank Car, Truck, and Ship Loaders
- Operating Engineers and Other Construction Equipment Operators
- Crane and Tower Operators
O*NET data describe work in the United States; requirements differ by country. This page includes information from the O*NET 31.0 Database by the U.S. Department of Labor, Employment and Training Administration (USDOL/ETA). Used under the CC BY 4.0 license. O*NET is a trademark of USDOL/ETA. CareerProof Global has modified all or some of this information; USDOL/ETA has not approved, endorsed, or tested these modifications.