midshipman

noun

1. a temporary rank held by young naval officers in training
   Terjemahkan ke Indonesia sumber: wordnet30
2. Formerly, a kind of naval cadet, in a ship of war, whose business was to carry orders, messages, reports, etc., between the officers of the quarter-deck and those of the forecastle, and render other services as required.
   Terjemahkan ke Indonesia sumber: webster1913