A flag is a piece of fabric with a distinctive design and colours. It is used as a symbol, a signalling device, or for decoration. The term flag is also used to refer to the graphic design employed, and flags have evolved into a general tool for rudimentary signalling and identification, especially in environments where communication is challenging. Many flags fall into groups of similar designs called flag families. The study of flags is known as "vexillology" from the Latin vexillum, meaning "flag" or "banner".
The Union Jack or Union Flag is the de facto national flag of the United Kingdom. The Union Flag was also used as the official flag of several British colonies and dominions before they adopted their own national flags. The flag continues to have official status in Canada, by parliamentary resolution, where it is known as the Royal Union Flag.
The national flag of Sweden consists of a yellow or gold Nordic cross on a field of light blue. The Nordic cross design traditionally represents Christianity. The design and colours of the Swedish flag are believed to have been inspired by the present coat of arms of Sweden of 1442, which is blue divided quarterly by a cross pattée of gold. Blue and yellow have been used as Swedish colours at least since Magnus III's royal coat of arms of 1275.
The national flag of Romania is a tricolour. The Constitution of Romania states that "The flag of Romania is tricolour; the colours are arranged vertically in the following order from the flagpole: blue, yellow, red". The flag has a width-length ratio of 2:3; the proportions, shades of colour as well as the flag protocol were established by law in 1994, and extended in 2001. Its similarity to the flag of Chad has caused international discussion.
Flag terminology is the nomenclature, or system of terms, used in vexillology, the study of flags, to describe precisely the parts, patterns, and other attributes of flags and their display.
In British maritime law and custom, an ensign is the identifying flag flown to designate a British ship, either military or civilian. Such flags display the United Kingdom Union Flag in the canton, with either a red, white or blue field, dependent on whether the vessel is civilian, naval, or in a special category. These are known as the red, white, and blue ensigns respectively.
The several branches of the United States Armed Forces are represented by flags. Within the U.S. military, various flags fly on various occasions, and on various ships, bases, camps, and military academies.
A maritime flag is a flag designated for use on ships, boats, and other watercraft. Naval flags are considered important at sea and the rules and regulations for the flying of flags are strictly enforced. The flag flown is related to the country of registration: so much so that the word "flag" is often used symbolically as a metonym for "country of registration".
The White Ensign, at one time called the St George's Ensign because of the simultaneous existence of a crossless version of the flag, is an ensign worn on British Royal Navy ships and shore establishments. It consists of a red St George's Cross on a white field, identical to the flag of England except with the Union Flag in the upper canton.
International maritime signal flags are various flags used to communicate with ships. The principal system of flags and associated codes is the International Code of Signals. Various navies have flag systems with additional flags and codes, and other flags are used in special uses, or have historical significance.
A jack is a flag flown from a short jackstaff at the bow (front) of a vessel, while the ensign is flown on the stern (rear). Jacks on bowsprits or foremasts appeared in the 17th century. A country may have different jacks for different purposes, especially when the naval jack is forbidden to other vessels. The United Kingdom has an official civil jack; the Netherlands has several unofficial ones. In some countries, ships of other government institutions may fly the naval jack, e.g. the ships of the United States Coast Guard and the National Oceanic and Atmospheric Administration in the case of the US jack. Certain organs of the UK's government have their own departmental jacks. Commercial or pleasure craft may fly the flag of an administrative division or municipality at the bow. Merchant ships may fly a house flag. Yachts may fly a club burgee or officer's flag or the owner's private signal at the bow. Practice may be regulated by law, custom, or personal judgment.
The commissioning pennant is a pennant flown from the masthead of a warship. The history of flying a commissioning pennant dates back to the days of chivalry with their trail pendants being flown from the mastheads of ships they commanded. Today, the commissioning pennants are hoisted on the day of commissioning and not struck until they are decommissioned. Some navies have a custom of flying a "paying off" or "decommissioning pennant," the length of which often reflects the length of service of the warship.
A pennon, also known as a pennant or pendant, is a long narrow flag which is larger at the hoist than at the fly, ie., the flag starts to narrow down as it moves away from the flagpole, when viewed from left to right. It can have several shapes, such as triangular, tapering or triangular swallowtail, etc. In maritime use, pennants are to be hung from the main truck.
A burgee is a distinguishing flag, regardless of its shape, of a recreational boating organization. In most cases, they have the shape of a pennant.
The flag of the United States Navy consists of the seal of the U.S. Department of the Navy in the center, above a yellow scroll inscribed "United States Navy" in dark blue letters, against a dark blue background.
A French ensign is the flag flown at sea to identify a vessel as French. Several such ensigns have existed over the years as well as terrestrial flags based on the ensign motif.
The ensign of the United States is the flag of the United States when worn as an ensign. International maritime law—see International Treaty on Law of the Sea, articles 91 and 92—provides that vessels have a "national character" and thus should display a flag (ensign) that corresponds to this national character, especially when in international or foreign waters. Vessels that are formally documented under the federal vessel documentation act, vessels owned by government bodies in the United States, and vessels in the U.S. military unquestionably have U.S. national character, and thus properly hoist a U.S. ensign to show their national character. Vessels that are numbered by the states and small, non-registered craft owned by U.S. citizens and not registered in other countries may also hoist a U.S. ensign to show their national character.
Often called bloody flags or the bloody red, pattern-free red flags were the traditional nautical symbol in European waters prior to the invention of flag signal codes to signify an intention to give battle and that 'no quarter would be given', indicating that surrender would not be accepted and all prisoners killed, but also vice versa, meaning that the one flying the flag would fight to the last man. Such flags were traditionally plain but examples with motifs also existed, such as skull and crossbones on some pirate examples.
The Canadian Naval Ensign is the flag worn at the stern or at the gaff of His Majesty's Canadian Ships. The ensign is also the flag of the Royal Canadian Navy (RCN) and is used on land in this capacity.
