Stevedore

Stowadores.

Source: wiktionary

The work of discharging and loading cargoes other than coal is undertaken by master stevedores, who are employed by the shipowner.

Source: wiktionary

The hatch foreman or gang boss supervises the longshore gang and directs their loading and discharge efforts. He assigns each member of the gang to a specific job, usually the same job each day or each shift; discusses operational problems with the stevedore superintendent who is in charge of the entire ship operation; inspects the stowage area; supervises the positioning and rigging of booms, etc. The stevedore superintendent and hatch foreman occupy strategic positions from a safety viewpoint.

Source: wiktionary

Stevedores differed from most other strategically placed port workers in that they were to some extent mobile. […] A master stevedore would contract to load vessels for shipping-lines whose vessels might be berthed at a number of docks, or even in the river. In following up the work of their employers stevedores might be required to work sometimes at the Victoria Dock, sometimes at the East India Dock, and so on.

Source: wiktionary