The ensign is only a signal....
About ten years ago, I did some extensive research as to how to fly the American Flag (ensign) and other types of flags (burgees, etc.,). I e-mailed the Library of Congress, called the office of one of my senator's staff, went to the local library and checked through numerous books and I included the 1917 edition of Chapmans.First and foremost, there are no laws as to how to fly the ensign on your boat or the American flag at your home. Congress recended all laws pertaining to displaying the American Flag. However, there are traditions that people like to follow--just remember they are traditions not rules or laws.A quick history of flag flying. During the golden age of sail flags were signals as to which country the ship came from, outward or homeward bound, who was on board, etc. Most countries flew it from the aft of the ship because it flew out in the breeze and could be seen from a distance. Place it anywheres else on a square rigger and it gets in way of the sail gear. However, Egytian boats flew their flags from the bow because their lanteen rigs swept the stern. When many boats went to fore and aft rigs (late 1800s) such as schooners and gaft rig sloops, the flag was placed at the aft end of the gaft on a pully so it could be raised and lowered. Burgees were raised to the top of the tallest mast on a "pig-stick" to show company, owner, home port, etc. At about the mid 1800s an interesting problem arises. Ports started taxing those work boats (some were still sail) to use the facilities but pleasure vessels were exempt. How to distinguse between the two? The nautical ensign (anchor in a circle of stars) was authorised by congress for pleasure craft only so that the tax collectors could tell working boats from pleasure craft. [I think I''ll change to the nautical ensign and see if it still works, right]Still, there were no rules for flying a flag. One flew it to let other boats know who you were or where you were from... During the early 1900s power boating started to become popular with the general public. Money was available to many families and they went out to buy these new fangled power boats. They literally flew the flag from anywheres on the boat for no sensible reasons. It was just fun. A new magazine at that time (Motor Boating) tried to make some sense of it all and Chapman who was the first editor of the magazine had a series of articles on how to make your "new" power boat look good including a section on flag flying. His suggestions came from the U.S. Navy regulations. He followed many of their regs and made them suggestions for the pleasure craft.In 1914, the then young assistant secretary of the Navy, FDR, asked Chapman if he would put together a publication to organize the pleasure craft fleet in case we went to war (WW I), Chapman did and came out with a little booklet called, "Practical Motor Boat Handling, Seamanship and Piloting." In my second edition is makes very little mention of sailboats other than to say, "stay out of their way." On the front page is also says, "...Adapted for the yachtsman interested in fitting himself to be of service to his Government in time of war." Damn, our first home security rulings...Chapter XIII was about Flags and Colors and tells about different flags. It offers some suggestions such as the Union Jack should never be flow while underway. It turns out that the Union Jack was the crews (read, paid crew) colors. There were also Guest Flags, Owner's Flag and Owner's Dinning Flag. Interesting to me was something called the "night pennant." No mention of when to fly it or where.As more and more electronics began to go to the top of the mast, burgees and owner flags migrated to the starboard side of the boat. Why starboard? Because most of the pleasure (both sail and power) docked with their port side to land or the dock. The Port of New York (I do not have good evidence on this point) wanted to see the signals and requested (required?) the flags on the starboard side. It does make some sense that when entering a harbor with boats along side a quey to be able to look at the signals and see who is on board and things like that.Over the years, Chapman's has become the "defacto" standard for flying flags and signals. But it is only suggestive, not a rule or law. You can fly your flag anywheres you want.But let's remember, it is a signal or a code to let others know some information about you. So where would you fly you ensign to be seen? Probably near or on the stern. One side or the other doesn't seem to be necessary and since many boats have a sugar scoop stern, flying the ensign in the center of the boat is out of the question. Flying it three quarters up the back stay is fine except at anchor when there is no wind and it droops around the back stay. That is why flag poles are angled out so that the flag can be seen when there is no wind. So it is your call.In some cases certain flags or signals have been out dated. You do not use the "Q" or quarantine pennant in some foreign countries anymore since they request you call them on VHF or the ship-to-shore phone. By the way, there are rules and regs for the US military however, they are only for the military. Pleasure craft need not follow them, indeed, the US Navy forbids you to lower your ensign in salute of their vessels. I still do it from time to time just to keep them on their toes. The Canadian Navy always responds--nice folk. I hope this helps with your decision making on the use of flags on your boat. You do not need any flags and you can use any size you want. The US Power Squadron which was the result of FDR's request to Chapman in 1917 has good advice. My best to you all.