crew

A crew member is anyone aboard a vessel who works under the command of licensed officers but holds no command authority themselves. On commercial ships, this includes able seamen (AB), ordinary seamen (OS), bosun's mates, engineers, ratings, and ratings in specialized roles like electronics technician or refrigeration mechanic. The distinction from officers is formal and legal: crew members have no deck watch responsibility and no authority to give orders to other crew.

The size and composition of a crew depends entirely on the ship's type and service. A bulk carrier might carry 20 hands; a small general cargo vessel, 12 to 16. The International Convention on Standards of Training, Certification and Watchkeeping for Seafarers (STCW) sets minimum manning requirements by tonnage and trade, but ship operators often run crews smaller than the old common practice. Engine room crew typically work either a four-hours-on, eight-hours-off rotation or a more compressed pattern depending on how many engineers a company has assigned.

What separates crew from officers is not the work itself, but the certification and watch responsibility. A bosun or chief engineer might be senior among crew, but they answer to an officer. Crew members stand no bridge watch or engine room watch unsupervised, though some hold certificates (like STCW Advanced Firefighting) that certify them for specialized hazard response. On smaller ships, a single officer might supervise six or eight deck crew; on larger ones, the ratio inverts.

The term encompasses a wide range of working conditions and specialization. A bosun maintains the hull, rigging, and deck gear; an oiler tends the engine's systems; a steward manages victuals and accommodation. Wage scales and certification levels vary sharply. An able seaman must have an STCW Book, medical certificate, and safety training; an ordinary seaman is often an apprentice or trainee with less formal qualification but lower pay. Turnover is chronic in the industry, and crew retention depends heavily on wage parity, safety record, and time away from home.

In shipyard and dock contexts, crew can also mean the work gang assigned to a specific job: a welding crew, a rigging crew, or a demolition crew. The distinction is usually clear from context, though marine usage favors the shipboard definition. Historically, crew derives from the Old French creue, meaning a levy or reinforcement, and entered English around the 16th century as the cohort of men enlisted to work a ship.