By Emily Carter
Every year thousands of people step onto a ship for the first time with nothing more than a basic safety certificate, a medical and a strong willingness to learn. For most of them, the first rung on the seafaring ladder is the Ordinary Seaman position. If you are searching for ordinary seaman jobs at this level, the good news is that the market is active right now: SeaJobs.pro currently lists 26 open Ordinary Seaman vacancies from verified crewing agencies, with monthly pay in a range from 1 600 to 4 500 EUR depending on vessel type, trading area and employer.
This guide is written for people who want to understand the role before they commit to it. We will look at what an Ordinary Seaman actually does on board, which certificates and documents agencies ask for, how the deck career ladder develops from this entry point, how to judge a vacancy on its merits, how to move through the application process without losing months to avoidable delays, and which mistakes cost candidates the most. Along the way we will rely on the information visible on SeaJobs.pro, a global platform used by seafarers and crewing companies, where CVs reach crewing managers directly.
The Ordinary Seaman, usually abbreviated OS, is an entry-level deck rating. Officially, he or she sits below the Able Seaman in the deck department and works under the direction of the Bosun and the officers of the watch. The job is less glamorous than the title suggests, but it is the foundation of everything a deck crew does. Most of the day is spent on practical work: chipping and painting, cleaning and preserving surfaces, handling mooring lines, assisting with anchoring, checking lashings, and keeping decks, stores and equipment in good order.
Watchkeeping is the other core responsibility. An OS normally stands lookout and helmsman duties under supervision, assists the officer of the watch with routine checks, and learns to recognise the sounds, signals and behaviour of a ship at sea. Watch patterns differ noticeably by vessel type. On a container ship running a fixed liner schedule, the rhythm is often four hours on and eight off, with port stays that compress the day into intense mooring and cargo-related work. On an oil or chemical tanker, the emphasis shifts toward cargo safety, tank preparation and strict procedures around hazardous material, so the OS is more closely supervised and rarely left alone with sensitive tasks. Offshore support vessels and AHTS units bring a different pattern altogether: deck work is frequent and physically demanding, with operations that depend on weather windows and the needs of the rig or platform. Passenger and RoPax ships add hotel-style duties, passenger safety drills and frequent turnarounds in port.
It helps to be clear about the boundaries of the role. An OS is not expected to take independent responsibility for navigation, cargo planning or the safety of the vessel as a whole; those duties belong to the Able Seaman, the Bosun and the deck officers. The OS is expected to learn, to follow instructions precisely and to ask when something is unclear. Candidates who treat the position as a waiting room for something better tend to struggle, because crews notice quickly who is genuinely engaged with the work.
The minimum formal requirement for an Ordinary Seaman is the basic safety training required under the STCW Convention. In practice this means certificates in personal survival techniques, fire prevention and fire fighting, elementary first aid and personal safety and social responsibilities. These courses are short, typically a few days each, but they must be current and recognised by the flag state or the employer. Along with them, you will need a valid seafarer's medical certificate, a seafarer's identity document or passport with sufficient validity, and in many cases a visa or travel documents for the port where you will join.
Crewing agencies usually ask for a set of supporting documents at the application stage. These commonly include the seafarer's discharge book, which records previous sea service, a CV that presents that service clearly, reference letters from former employers where available, and copies of all certificates. Some agencies also request a passport-style photograph, a training record and proof of English proficiency. Because the OS is an entry rank, many candidates have little or no sea time, and agencies will often accept relevant experience from fishing, ferries, the merchant navy training schemes or maritime colleges as part of the picture.
Age limits and national rules vary. STCW sets a general minimum age for seafarers, but flag states and individual employers may impose higher limits or additional requirements for certain vessel types, especially tankers and offshore units. Nationality can also matter in practice, since some flags and charterers have specific crewing policies. The safest approach is to check the requirements listed on each vacancy and confirm them with the agency before paying for any course, because a course that does not meet the employer's standard is money lost.
The fastest route to a first contract is rarely the one with the most certificates; it is the one where every document is valid, consistent and ready to be checked on the first day of the agency's screening.
The Ordinary Seaman is a starting point, and the deck career is built on progression. The usual path runs from OS to Able Seaman, which requires additional sea service and a higher level of competence in seamanship, watchkeeping and cargo or mooring operations. From there, experienced ratings can move toward the Bosun role, which carries supervisory responsibility for the deck crew, or follow a route toward the officer track through a cadet programme or a maritime academy. Each step has its own certification requirements, and the rules are set by the flag state and the STCW framework.
Realistic timeframes depend on how much sea time you accumulate and how your employers evaluate you. Many seafarers spend a year or two as an OS before qualifying as an Able Seaman, although the exact period varies with the vessel types you work on, the regularity of your contracts and whether you complete additional courses. Employer evaluations matter more than many candidates expect: a good report from a bosun or master can open doors that a certificate alone cannot. Sea time gained on busier or more technically demanding ships is often valued more highly, which is one reason why a sound first placement can shape the rest of a career.
Lateral moves are also common. Offshore support, tanker and cruise work each have their own culture, demands and pay structures. Offshore deck work tends to be physically intensive and operationally unpredictable, with long periods on board and strict safety discipline around lifting and dynamic positioning operations. Tanker work demands meticulous attention to cargo procedures and an acceptance of tighter controls. Cruise ships offer a more hospitality-oriented environment and different rotations. Choosing a specialisation is less about chasing the highest headline wage and more about matching your temperament and physical capacity to the work.
Vacancies for this rank come from several sources, and understanding them helps you judge what you are looking at. Direct crewing agencies recruit on behalf of shipowners and ship managers and usually handle the full process from screening to travel. Manning agents operate in a similar way, often with a stronger presence in specific countries. Some shipowners recruit directly, particularly for their own fleets. Job boards and aggregators gather listings from many sources, which gives breadth but also introduces noise, because the same position may appear several times, and the originating agency is not always clear.
