Onboard is one word (sometimes hyphenated—on-board) when it comes before the noun it modifies (e.g., onboard radio, onboard computer). Elsewhere, writers usually make on board two words. For instance, one might write, “We brought a radio on board so we could have an onboard radio. When you’re on a boat or ship, you are on board. —Georgs Georgs Kolesnikovs Your host at Trawlers & Trawlering since 1997 http://www.trawlersandtrawlering.com <http://www.trawlersandtrawlering.com/> >> >> Any idea which is correct, I've seen both- 'on board' or 'onboard'? >> >> >> *Rudy & Jill Sechez* >> *BRINEY BUG-a 34' Sail-Assisted Trawler * >