/ Thesaurus / S Synonyms of shipboard duty Find synonyms for: Noun1. sea-duty, service abroad, shipboard duty, assignment, duty assignmentusage: naval service aboard a ship at seaWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: denizen Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language