Engine-room, deck, and catering work kept merchant ships moving

Merchant engineering departments depended on qualified chief and second engineers as well as teams with years of heavy-engineering experience. Because they worked deep in the hull, engine-room personnel faced especially poor chances of escape after a torpedo hit. These ratings were known historically as the 'Black Gang,' a name tied to the coal soot and oil on their clothes and skin rather than race; the workforce itself was often multiracial. Donkeymen and greasers supervised auxiliary machinery, lubrication, and the firemen and trimmers who kept the plant running. Firemen and trimmers faced physically punishing work in coal bunkers, while their hand-balancing of fuel affected a ship's stability and demanded continual mental calculation. Later ships added dials and displays to help trimmers monitor stability. Storekeepers preserved institutional knowledge and could still lend an experienced hand when needed. Catering staff kept watchkeepers fed and hydrated at their posts, showing that a wartime merchant ship was a complex working community rather than merely a cargo carrier.