The condition of being aboard a ship: on shipboard. (noun)
Archaic The side of a ship. (noun)
Existing or occurring on board a ship: a shipboard fire. (adjective)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "shipboard" in a sentence
"Between the Macphails and the Davidsons, who were missionaries, there had arisen the intimacy of shipboard, which is due to propinquity rather than to any community of taste."
"My records for Kira and O'Brien indicate they were lost in some kind of shipboard battle, trying to ward off an invading force."
"Choosing a cruise, frankly, depends more on the kind of shipboard experience you're looking for than what you want to see of Mexico."