the.com/deckhand

means A worker who performs the general manual labor on a ship's deck — loading, cleaning, tying lines, and other tasks that don't require an officer's license.

from A straightforward compound: 'deck,' from the Dutch 'dec' meaning a covering or roof (originally the covering over a ship's hold, later the floor-like surface itself), joined with 'hand' in its old sense of 'a worker' or 'laborer' — the same sense that gave us 'farmhand' and 'factory hand,' where a person is identified by the tool they bring to the job, namely their own two hands.