A jack is a flag flown from a short jackstaff at the bow (front) of a vessel, while the

ensign An ensign is the national flag flown on a vessel to indicate nationality. The ensign is the largest flag, generally flown at the stern (rear) of the ship while in port. The naval ensign (also known as war ensign), used on warships, may be diffe ...

is flown on the stern (rear). Jacks on

bowsprit The bowsprit of a sailing vessel is a spar extending forward from the vessel's prow. The bowsprit is typically held down by a bobstay A bobstay is a part of the rigging of a sailing boat or ship. Its purpose is to counteract the upward tensio ...

s or

foremast The mast of a sailing vessel is a tall spar, or arrangement of spars, erected more or less vertically on the centre-line of a ship or boat. Its purposes include carrying sails, spars, and derricks, and giving necessary height to a navigation ...

s appeared in the 17th century. A country may have different jacks for different purposes, especially when (as in the United Kingdom and the Netherlands) 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 The United States Coast Guard (USCG) is the maritime security, search and rescue, and law enforcement service branch of the United States Armed Forces and one of the country's eight uniformed services. The service is a maritime, military, mu ...

and the

National Oceanic and Atmospheric Administration The National Oceanic and Atmospheric Administration (abbreviated as NOAA ) is an United States scientific and regulatory agency within the United States Department of Commerce that forecasts weather, monitors oceanic and atmospheric conditio ...

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 Administrative division, administrative unit,Article 3(1). country subdivision, administrative region, subnational entity, constituent state, as well as many similar terms, are generic names for geographical areas into which a particular, ind ...

(state, province, land) or municipality at the bow. Merchant ships may fly a

house flag A house is a single-unit residential building. It may range in complexity from a rudimentary hut to a complex structure of wood, masonry, concrete or other material, outfitted with plumbing, electrical, and heating, ventilation, and air cond ...

. Yachts may fly a club

burgee 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. Etiquette Yacht clubs and their members may fly their club's burgee while under way and at ...

or officer's flag or the owner's private signal at the bow. Practice may be regulated by law, custom, or personal judgment.

Etymology

"Jack" occupies 6 pages of the complete second edition of the Oxford English Dictionary and the use of the word in English goes back to the 14th century, appearing as a forename in Piers Plowman. Quite early on it was used as a name for a peasant or "a man of the lower orders". It continued the low class connotations in phrases such as "jack tar" for a common seaman, "every man jack," or the use of jack for the knave in cards. The diminutive form is also seen in "Jack of all trades, master of none", where Jack implies a poor tradesman, possibly not up to journeyman standard. The term was taken into inanimate objects and denoted a small (or occasionally inferior) component: jack-pit (a small mine shaft), jackplug (single pronged, low current), jack-shaft (intermediate or idler shaft), jack (in bowling: the small ball) or jack-engine (a donkey or barring engine). Incidentally, a jack is a garment for the upper body (quotes from 1375 onwards), a jacket is derived from this and is a small jack; not the other way around. As a further example of this usage, in 1686

Robert Plot Robert Plot (13 December 1640 – 30 April 1696) was an English naturalist, first Professor of Chemistry at the University of Oxford, and the first keeper of the Ashmolean Museum. Early life and education Born in Borden, Kent to parents Robe ...

writing about gins (i.e. horse engines) to pump water out of mines says: "they draw it

he water He or HE may refer to: Language * He (pronoun), an English pronoun * He (kana), the romanization of the Japanese kana へ * He (letter), the fifth letter of many Semitic alphabets * He (Cyrillic), a letter of the Cyrillic script called ''He'' ...

up by Gin, which is made bigger, or less ... the less they call a Jack". As a flag, "jack" followed this usage. A jack flag was a small flag, used to distinguish it from the large ensign or pennants. The OED mentions the theory of its derivation from James I or from a leathern jacket but dismisses both: "neither of these conjectures covers the early use of the word". Originally, the jack would have been flown from the bowsprit topmast head: "You are alsoe for this present service to keepe in yo^r Jack at yo^r Boultspritt end" (sailing instructions 1633 as quoted in OED2). In 1667 Samuel Pepys, naval administrator and diarist, recorded the Dutch taking the and a man "struck her flag and jacke" — clearly two different things. By 1692 the jackstaff had been developed to fly the jack: "Jack staff and Jack".

Usage

A naval jack is usually flown when the ship is not under way, but is moored or at anchor, or when it is dressed overall on special occasions. The Union Jack of the

Royal Navy The Royal Navy (RN) is the United Kingdom's naval warfare force. Although warships were used by English and Scottish kings from the early medieval period, the first major maritime engagements were fought in the Hundred Years' War against ...

must be run up when the first line is ashore when coming alongside. The same regulations are applied by the

Royal Canadian Navy The Royal Canadian Navy (RCN; french: Marine royale canadienne, ''MRC'') is the naval force of Canada. The RCN is one of three environmental commands within the Canadian Armed Forces. As of 2021, the RCN operates 12 frigates, four attack submar ...

. In the

United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territori ...

, the

First Navy Jack The First Navy Jack was the naval jack of the United States from 1975 to 1976 and again from 2002 to 2019. It was authorized by the U.S. Navy and was flown from the jackstaff of commissioned vessels of the U.S. Navy while moored pierside or at an ...

is also used as embroidered sleeve patches by the US Navy on its uniforms.

Shapes and designs

Naval jacks are usually rectangular, often square, and smaller than the national

or war flag. Some countries fly a smaller version of the national or war flag, or its canton on its own.

France France (), officially the French Republic ( ), is a country primarily located in Western Europe. It also comprises of overseas regions and territories in the Americas and the Atlantic, Pacific and Indian Oceans. Its metropolitan area ...

and some other countries use the same flag or ensign for all purposes, civil or military, and also as their naval jack. Japan and some other countries with civil and war ensigns of different designs fly the civil ensign as a jack and the war ensign at the ship's stern. A shortened, square version of the national flag is used by some countries. A larger group of jacks show the country's national

coat of arms A coat of arms is a heraldic visual design on an escutcheon (i.e., shield), surcoat, or tabard (the latter two being outer garments). The coat of arms on an escutcheon forms the central element of the full heraldic achievement, which in its ...

, either as a

banner A banner can be a flag or another piece of cloth bearing a symbol, logo, slogan or another message. A flag whose design is the same as the shield in a coat of arms (but usually in a square or rectangular shape) is called a banner of arms. Als ...

of arms, or as a

badge A badge is a device or accessory, often containing the insignia of an organization, which is presented or displayed to indicate some feat of service, a special accomplishment, a symbol of authority granted by taking an oath (e.g., police and ...

displayed on the field. Most countries have chosen a completely different design for their naval jacks, often with some national or maritime symbol, and usually with the same colours as in their flags.

War ensign as jack

Countries that use their war ensign also as a jack, will usually fly a smaller version at the bow.

War flag as jack

File:Flag of the People's Liberation Army.svg, Naval jack of China

Square version of national flag as jack

File:Naval Jack of Belgium.svg, Naval jack of Belgium File:Naval Jack of Norway.svg, Naval jack of Norway File:Naval Jack of Romania.svg, Naval jack of Romania

Canton of national ensign as jack

File:Naval Jack of Chile.svg, Naval jack of Chile File:Naval Jack of Greece.svg, Naval jack of Greece File:Star in Blue Box - Flag of Liberia.svg, Naval jack of Liberia File:Naval Jack of the Republic of China.svg, Naval jack of the Republic of China File:US Naval Jack.svg, Naval jack of the US, also flown by other federal government and civilian ships

National coat of arms as jack

National flag as jack

File:Flag of Antigua and Barbuda.svg, Naval jack of Antigua and Barbuda File:Flag of Australia (converted).svg, Naval jack of Australia File:Flag of the Bahamas.svg, Naval jack of

the Bahamas The Bahamas (), officially the Commonwealth of The Bahamas, is an island country within the Lucayan Archipelago of the West Indies in the North Atlantic. It takes up 97% of the Lucayan Archipelago's land area and is home to 88% of the ar ...

File:Flag of Bangladesh.svg, Naval jack of

Bangladesh Bangladesh (}, ), officially the People's Republic of Bangladesh, is a country in South Asia. It is the eighth-most populous country in the world, with a population exceeding 165 million people in an area of . Bangladesh is among the mos ...

File:Flag of Brunei.svg, Naval jack of

Brunei Brunei ( , ), formally Brunei Darussalam ( ms, Negara Brunei Darussalam, Jawi: , ), is a country located on the north coast of the island of Borneo in Southeast Asia. Apart from its South China Sea coast, it is completely surrounded by t ...

File:Flag of Canada (Pantone).svg, Naval jack of

Canada Canada is a country in North America. Its ten provinces and three territories extend from the Atlantic Ocean to the Pacific Ocean and northward into the Arctic Ocean, covering over , making it the world's second-largest country by tot ...

File:Flag of France.svg, Naval jack of

File:Flag of India.svg, Naval jack of

India India, officially the Republic of India (Hindi: ), is a country in South Asia. It is the seventh-largest country by area, the second-most populous country, and the most populous democracy in the world. Bounded by the Indian Ocean on the so ...

File:Flag of Japan.svg, Naval jack of Japan File:Flag of Malaysia.svg, Naval jack of

Malaysia Malaysia ( ; ) is a country in Southeast Asia. The federation, federal constitutional monarchy consists of States and federal territories of Malaysia, thirteen states and three federal territories, separated by the South China Sea into two r ...

File:Flag of Myanmar.svg, Naval jack of

Myanmar Myanmar, ; UK pronunciations: US pronunciations incl. . Note: Wikipedia's IPA conventions require indicating /r/ even in British English although only some British English speakers pronounce r at the end of syllables. As John Wells explai ...

File:Flag of New Zealand.svg, Naval jack of

New Zealand New Zealand ( mi, Aotearoa ) is an island country in the southwestern Pacific Ocean. It consists of two main landmasses—the North Island () and the South Island ()—and over 700 smaller islands. It is the sixth-largest island count ...

File:Flag of South Africa.svg, Naval jack of

South Africa South Africa, officially the Republic of South Africa (RSA), is the Southern Africa, southernmost country in Africa. It is bounded to the south by of coastline that stretch along the Atlantic Ocean, South Atlantic and Indian Oceans; to the ...

File:Flag of Singapore.svg, Naval jack of

Singapore Singapore (), officially the Republic of Singapore, is a sovereign island country and city-state in maritime Southeast Asia. It lies about one degree of latitude () north of the equator, off the southern tip of the Malay Peninsula, bor ...

File:Flag of Sri Lanka.svg, Naval jack of Sri Lanka File:Flag of Turkey.svg, Naval jack of

Turkey Turkey ( tr, Türkiye ), officially the Republic of Türkiye ( tr, Türkiye Cumhuriyeti, links=no ), is a transcontinental country located mainly on the Anatolian Peninsula in Western Asia, with a small portion on the Balkan Peninsula in ...

File:Flag of Ukraine.svg, Naval jack of

Ukraine Ukraine ( uk, Україна, Ukraïna, ) is a country in Eastern Europe. It is the second-largest European country after Russia, which it borders to the east and northeast. Ukraine covers approximately . Prior to the ongoing Russian inv ...

File:Flag of the United Kingdom.svg, Naval jack of the

United Kingdom The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain, is a country in Europe, off the north-western coast of the European mainland, continental mainland. It comprises England, Scotlan ...

(i.e. the Union Jack) File:Flag of Vietnam.svg, Naval jack of

Vietnam Vietnam or Viet Nam ( vi, Việt Nam, ), officially the Socialist Republic of Vietnam,., group="n" is a country in Southeast Asia, at the eastern edge of mainland Southeast Asia, with an area of and population of 96 million, making i ...

National flag in canton as jack

Jacks of special design

British flag copies

File:Naval Jack of Bulgaria.svg, Naval jack of

Bulgaria Bulgaria (; bg, България, Bǎlgariya), officially the Republic of Bulgaria,, ) is a country in Southeast Europe. It is situated on the eastern flank of the Balkans, and is bordered by Romania to the north, Serbia and North Macedo ...

File:Naval Jack of Estonia.svg, Naval jack of

Estonia Estonia, formally the Republic of Estonia, is a country by the Baltic Sea in Northern Europe. It is bordered to the north by the Gulf of Finland across from Finland, to the west by the sea across from Sweden, to the south by Latvia, a ...

File:Naval Ensign of Georgia.svg, Naval jack of

Georgia Georgia most commonly refers to: * Georgia (country), a country in the Caucasus region of Eurasia * Georgia (U.S. state), a state in the Southeast United States Georgia may also refer to: Places Historical states and entities * Related to the ...

from 2004 to 2009 File:Naval Jack of Latvia.svg, Naval jack of Latvia File:Naval Jack of Russia.svg, Naval jack of

Russia Russia (, , ), or the Russian Federation, is a transcontinental country spanning Eastern Europe and Northern Asia. It is the largest country in the world, with its internationally recognised territory covering , and encompassing one-eig ...

Union jacks

Norwegian gunboat Sleipner at Kiel June 1895

United or confederated states have in many cases adopted a jack representing their national union. The best known is the

Union Jack The Union Jack, or Union Flag, is the ''de facto'' national flag of the United Kingdom. Although no law has been passed making the Union Flag the official national flag of the United Kingdom, it has effectively become such through precedent. ...

of the

, composed in 1606 by joining the flags of

England England is a country that is part of the United Kingdom. It shares land borders with Wales to its west and Scotland to its north. The Irish Sea lies northwest and the Celtic Sea to the southwest. It is separated from continental Europe b ...

and

Scotland Scotland (, ) is a Countries of the United Kingdom, country that is part of the United Kingdom. Covering the northern third of the island of Great Britain, mainland Scotland has a Anglo-Scottish border, border with England to the southeast ...

. When the Kingdom of Ireland merged with

Great Britain Great Britain is an island in the North Atlantic Ocean off the northwest coast of continental Europe. With an area of , it is the largest of the British Isles, the largest European island and the ninth-largest island in the world. It i ...

in 1801, a red

saltire A saltire, also called Saint Andrew's Cross or the crux decussata, is a heraldic symbol in the form of a diagonal cross, like the shape of the letter X in Roman type. The word comes from the Middle French ''sautoir'', Medieval Latin ''saltatori ...

( Saint Patrick's Cross) was added to form the present Union Flag. The design of the UK's Union Jack probably inspired later jacks of other states, such as

and the Union Jack of Sweden and Norway. The Russian jack in its turn inspired the jacks of

, and Latvia. From 1777 to 1975, 1977 to September 2002, and June 2019 to the present, the

United States Navy The United States Navy (USN) is the maritime service branch of the United States Armed Forces and one of the eight uniformed services of the United States. It is the largest and most powerful navy in the world, with the estimated tonnage ...

has flown a "

union jack The Union Jack, or Union Flag, is the ''de facto'' national flag of the United Kingdom. Although no law has been passed making the Union Flag the official national flag of the United Kingdom, it has effectively become such through precedent. ...

", consisting of the blue canton with white stars from the US national ensign. In 1975 and 1976, and then again from September 11, 2002, to June 4, 2019, the US Navy flew the

, allegedly used in 1775 and 1776, with a rattlesnake and the

motto A motto (derived from the Latin , 'mutter', by way of Italian , 'word' or 'sentence') is a sentence or phrase expressing a belief or purpose, or the general motivation or intention of an individual, family, social group, or organisation. Mot ...

"DONT TREAD ON ME" (''sic'') superimposed on thirteen alternating red and white stripes. The

Confederate States of America The Confederate States of America (CSA), commonly referred to as the Confederate States or the Confederacy was an unrecognized breakaway republic in the Southern United States that existed from February 8, 1861, to May 9, 1865. The Confeder ...

followed the same pattern for its first naval jack (1861–1863), using the canton of its first naval ensign, with seven stars forming a circle on a "medium blue" field. Later versions had up to fifteen stars. The second Confederate naval jack was a rectangular cousin of the Confederate army's battle flag and was in use from 1863 until 1865. The Union Jack of Sweden and Norway (1844–1905) was a rectangular cross flag divided per saltire, combining the national colours of Sweden (hoist and fly) and

Norway Norway, officially the Kingdom of Norway, is a Nordic country in Northern Europe, the mainland territory of which comprises the western and northernmost portion of the Scandinavian Peninsula. The remote Arctic island of Jan Mayen and the ...

(top and bottom). The naval jack was also used as a flag for the common diplomatic representations abroad. File:Flag of the United Kingdom.svg, The

of the United Kingdom File:US Naval Jack.svg, Naval jack of the United States from 1960 to 1975, 1977 to 2002, and 2019 to the present (identical to the canton in the national flag or ensign of that period) File:Naval jack of the Confederate States of America (1861-1863).svg, Naval jack of the

Confederate States The Confederate States of America (CSA), commonly referred to as the Confederate States or the Confederacy was an unrecognized breakaway republic in the Southern United States that existed from February 8, 1861, to May 9, 1865. The Confeder ...

from 1861 to 1863 File:Confederate_Navy_Jack_(light_blue).svg, Naval jack of the Confederate States from 1863 to 1865 File:Union Jack of Sweden and Norway (1844-1905).svg, Naval jack of Sweden and Norway from 1844 to 1905

Notes

References

External links

{{Commons category, Naval jacks
FOTW (Flags of the World) website on jacks

Types of flags Jacks (flags) Maritime flags Maritime culture