How many letters does the top answer for “a member of a ship's crew who performs manual labor” have?

The most common answer is deckhand (8 letters).

Crossword clue: a member of a ship's crew who performs manual labor

2 answers found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

deckhand 8 letters wn-def

a member of a ship's crew who performs manual labor

roustabout 10 letters wn-def

a member of a ship's crew who performs manual labor