OS Seaman Jobs (Ordinary Seaman / OS)
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, tankers
, container ships
, bulk carriers
, cruise vessels
, Ro-Ro vessels
, and offshore fleet
.Direct hiring only — no recruitment agency fees. For EU passport holders, premium European vacancies are available with salaries up to €2,500/month.
Who Is an OS Seaman
OS is a junior deck rating under STCW II/4. Above you are AB, Bosun, and deck officers. Below you — nobody.This means most physical deck work becomes your responsibility:
- chipping
- painting
- washing
- deck cleaning
- handling mooring lines
- maintenance support
The watchkeeping schedule is usually 4/8, similar to AB, but without Helmsman duties or independent operational responsibility.OS is essentially a learning stage under the supervision of AB and Bosun. After 12 months of sea service and passing the AB Certificate of Proficiency examination, you can move to the next level.
EU Passport Advantage
Seafarers holding EU citizenship are priority candidates for Norwegian, Dutch, German, Danish, and Greek operators.Salary levels are often 30–50% higher due to European collective agreements such as ITF Norway and Netherlands TCC.Top OS salaries for EU passport holders reach up to €2,500/month on the offshore fleet
.Especially demanded candidates from:
- Poland
- Lithuania
- Latvia
- Estonia
- Bulgaria
- Romania
- Croatia
- Germany
- Greece
- Netherlands
For OS positions this matters significantly:
international entry-level salaries may range from $700–1,200, while European contracts may already offer €1,500–2,500 from the first contract.
Main Duties of OS Seaman
- Deck Maintenance
- Chipping & Painting
- Washing Operations
- Lookout Watch
- Mooring Support
- Gangway Watch
- Cleaning Duties
- Pilot Ladder Rigging
- Trash Management
- Assisting AB and Bosun
OS does not perform Helmsman duty. Steering operations remain the responsibility of AB.
Equipment Used on Deck
OS crew members commonly work with:
- chipping hammers
- needle guns
- brushes
- rollers
- high-pressure washers
- mooring lines
- heaving lines
- pilot ladders
- portable VHF radios
- safety harnesses
Learning chipping and painting efficiently is usually part of the first weeks onboard.
Vessel Types for OS Jobs
LNG / LPG Fleet
Strict safety procedures, premium fleet standards, and high discipline requirements.➡️ LNG Fleet Jobs
Tanker Fleet
Work involving tank cleaning, inert gas systems, and cargo operations.➡️ Tanker Jobs
Container Fleet
Lashing operations and work with twistlocks.➡️ Container Ship Jobs
Bulk Carrier Fleet
Hold cleaning, hatch covers, and ballast operations.➡️ Bulk Carrier Jobs
General Cargo Fleet
Wide operational exposure to different cargoes and equipment.➡️ General Cargo Jobs
Ro-Ro / PCTC Fleet
Vehicle securing, ramps, and car deck operations.➡️ Ro-Ro Jobs
Cruise Fleet
Gangway watch, passenger interaction, and strict service standards.➡️ Cruise Ship Jobs
Offshore Fleet
FPSO, PSV, OSV, AHTS. Higher salaries and faster career growth.➡️ Offshore Jobs
A Typical Day of an OS Seaman
04:00 — wake-up for watchkeeping duty.
08:00 — breakfast and Bosun task assignment.
09:00 — chipping and painting operations.
13:00 — gangway watch duty.
15:00 — washing operations.
19:00 — dinner.
23:00 — sleep before the next watch.The first months are usually the hardest. Later comes experience and understanding of fleet operations.➡️ Find OS Seaman Jobs
· Check Vessel
· Register Seafarer CV
Safety Risks Every OS Must Understand
The deck department is one of the highest-risk areas onboard. For OS crew members, risks are even higher due to lack of experience.Main topics include:
- Snap-back zones
- Enclosed spaces
- Heavy weather operations
- Work aloft
- Mooring safety
- Permit-to-work procedures
- Gas-free procedures
One of the most common interview questions:
“What is a snap-back zone?”Incorrect answers often result in rejection.
OS Seaman Salaries in 2026
International Market
- Offshore — $1,200–1,900
- LNG / LPG — $1,200–1,800
- Tanker Fleet — $1,000–1,600
- Container Fleet — $900–1,400
- Bulk Carrier — $800–1,300
- General Cargo / Ro-Ro — $800–1,300
- Cruise Fleet — $700–1,200
EU Passport Premium Segment
- Norwegian Offshore — €2,000–2,500
- Dutch Fleet — €1,700–2,200
- German Container Fleet — €1,500–2,000
- Greek Tanker / LNG — €1,400–1,900
Overtime is usually paid separately.
Requirements for OS Seaman
- STCW II/4 Certificate
- STCW Basic Safety
- ENG1 / Medical
- Seaman Book
- Sea Service or approved training
- Marlins English Test
- Basic Tanker / LNG endorsements
Additional advantages:
- Safety Awareness
- Work at Height Training
- Physical Fitness
- Shore experience
- Basic deck knowledge
Career Path
STCW Courses → OS → AB → BosunFurther growth opportunities:
- Deck Cadet
- Third Officer
- Second Officer
- Chief Officer
- Master Mariner
Common CV Mistakes
- Missing STCW II/4
- Expired certificates
- Weak English
- No Safety Awareness
- No photo
- No motivation description
- Unrealistic salary expectations
- No physical fitness information
Why Seafarers Choose Direct Hiring Through JobMarineMan
OS is often the most vulnerable crew member onboard. Understanding the vessel and employer before joining matters.JobMarineMan provides:
- Vessel Database
— vessel verification by IMO - direct contact with crewing departments
- direct hiring without intermediaries
- CV feedback within 48 hours
- vacancies directly from shipowners
FAQ
Can you become OS without maritime education?
Yes. Completing STCW courses and obtaining the required documents is enough.
How much do STCW courses cost?
Average pricing:
- CIS countries — $400–800
- EU countries — €800–1,500
What advantage does EU passport provide?
Access to premium European fleets and significantly higher salaries.
Which fleet is best for the first contract?
Bulk Carrier and General Cargo fleets are usually considered the best entry-level options.
How much sea service is required before becoming AB?
Minimum 12 months plus passing the AB Certificate of Proficiency examination.
What is a snap-back zone?
A dangerous area during mooring operations. A parted rope may cause fatal injuries.
What English level is required for the first contract?
Marlins / CES from 40–50%.
Does the employer pay for travel?
Usually covered:
- airline tickets
- transfers
- visas
Basic STCW courses are usually paid by the seafarer.➡️ Find OS Jobs
➡️ Check Vessel via Vessel Database
➡️ Register Seafarer CV