The phrase "while aboard" is correct and usable in written English.
You can use it when referring to a period of time spent on a boat or some other type of vehicle. For example: "The passengers enjoyed the view while aboard the cruise ship."
When you're stepping aboard the station, a computerised voice intones, "while aboard the Tacoma station please remember that all activity on this facility is monitored by AR recording.
While aboard the space station, Sheikh performed industrial and medical scientific experiments and recorded video addresses for schoolchildren.
Ransome undertook such a voyage on Nancy Blackett as research for the book and wrote some of it while aboard.
Fisher, 60, has been hospitalized since Friday after going into cardiac arrest while aboard an 11-hour flight.
He also served a tour in the Pacific Theater where, in May 1945, he survived a deadly kamikaze attack while aboard the USS Bunker Hill.
It is a sensitive, detailed record of the poet's thoughts and observations about the continuity of nature and of brotherhood while aboard a ferry between Brooklyn and Manhattan.
It was while aboard a cruise ship for months as a musician with a lot of reading time on his hands that he got the inspiration for "Natasha".
"The Navy has a system," Mr. Mahmoud said while aboard the Iranian fishing boat, waiting to be transferred to the first American warship.
Mr. Hughes, cradling a notebook, said he preferred to occupy himself by drawing sketches of fellow passengers while aboard a plodding train.
He commanded units from a cavalry platoon to a tank brigade; while aboard Army helicopters in Vietnam, he was shot down several times by enemy fire and wounded.
They might do data entry while standing on the virtual banks of Japan's Tokachi River, say, or edit a memo while aboard a space station overlooking a supernova.
