Flag of Hawaii in command of the H.M.S. Discovery. During the Visit Vancouver met with Kamehameha I and presented him with a Red Ensign. At this time Ireland was not part of a united kingdom which meant the union jack did not contain Saint Patrick's Cross. This version of the Red Ensign, as well as the current version which added the cross in 1801, was the unofficial flag of the Kingdom of Hawaii until 1816. An adviser to Kamehameha noted that the Union Flag could draw Hawaii into international conflict, as his kingdom could be seen as an ally of the United Kingdom,
Union Jack and submarines of the Royal Navy, and by commissioned army and Royal Air Force vessels. When at anchor or alongside, it is flown from the jackstaff at the bow of the ship. When a ship is underway, the Union Jack is only flown from the jackstaff when the ship is dressed for a special occasion, such as the Queen's official birthday. The Union Jack is worn at the masthead of a ship to indicate the presence of the Sovereign or an Admiral of the Fleet. The Union Flag may also be flown from the yardarm to indicate that a court-martial