Failure to amain, that is, to douse your topsail or dip your colours when you meet with a ship of war--the marine equivalent for raising one's hat--constituted a gross contempt of the king's service. The custom was very ancient, King John having instituted it in the second year of his reign. At that time, and indeed for long after, the salute was obligatory, its omission entailing heavy penalties; [Footnote: A copy of the original proclamation may be seen in Lansdowne MSS., clxxi, f. 218, where it is also summarised in the following terms: _"Anno 2 regni Johannis regis: Frends not amaining at the j sumons but resisting the King his lieutenant, the L. Admirall or his lieutenant, to lose the ship and goods, & theire bodies to be imprisoned."_] but with the advent of the century of pressing another means of inspiring respect for the flag, now exacted as a courtesy rather than a right, came into vogue. The offending vessel paid for its omission in men.
If you were anything but a king's ship, and flew a flag that only king's ships were entitled to fly, you were guilty, in the eyes of every right-seeing naval officer, of another piece of ill manners so gross as to be deserving of the severest punishment the press was capable of inflicting upon you. You might fly the "flag and Jack white, with a red cross (commonly called St. George's cross) passing quite through the same"; likewise the "ensign red, with the cross in a canton of white at the upper corner thereof, next to the staff"; but if you presumed to display His Majesty's Jack, commonly called the Union Jack, or any other of the various flags of command flown by ships of war or vessels employed in the naval service, swift retribution overtook you. Similarly, the inadvertent hoisting of your colours "wrong end uppermost," or in any other manner deemed inconsistent with the dignity of the service which permitted you to fly them, laid you open to reprisals of the most summary nature. Before you realised the heinousness of your offence, a gang boarded you and your best man or men were gone beyond recall. The joy of waterside weddings--occasions prolific in the display of wrong colours--was often turned into sorrow in this way.