Ship camouflage
Encyclopedia

Ship camouflage is a form of military deception
Military deception
Military deception is an attempt to amplify, or create an artificial fog of war or to mislead the enemy using psychological operations, information warfare and other methods. As a form of strategic use of information , it overlaps with psychological warfare...

 in which a ship is paint
Paint
Paint is any liquid, liquefiable, or mastic composition which after application to a substrate in a thin layer is converted to an opaque solid film. One may also consider the digital mimicry thereof...

ed in one or more color
Color
Color or colour is the visual perceptual property corresponding in humans to the categories called red, green, blue and others. Color derives from the spectrum of light interacting in the eye with the spectral sensitivities of the light receptors...

s in order to obscure or confuse an enemy's visual observation. There are three types of marine camouflage that have been used: blending or crypsis
Crypsis
In ecology, crypsis is the ability of an organism to avoid observation or detection by other organisms. It may be either a predation strategy or an antipredator adaptation, and methods include camouflage, nocturnality, subterranean lifestyle, transparency, and mimicry...

, in which a paint scheme attempts to hide a ship from view; deception, in which a ship is made to look smaller, or that it has a different speed or heading; and disruption, a chaotic paint scheme which tries to confuse any estimate of distance or direction.

Prior to World War One

The first recorded instance of ship camouflage was in the years 56–54 BC during the Gallic Wars
Gallic Wars
The Gallic Wars were a series of military campaigns waged by the Roman proconsul Julius Caesar against several Gallic tribes. They lasted from 58 BC to 51 BC. The Gallic Wars culminated in the decisive Battle of Alesia in 52 BC, in which a complete Roman victory resulted in the expansion of the...

, carried out by Julius Caesar
Julius Caesar
Gaius Julius Caesar was a Roman general and statesman and a distinguished writer of Latin prose. He played a critical role in the gradual transformation of the Roman Republic into the Roman Empire....

 who sent his speculatoria navigia (scout ships) to gather intelligence along the coast of Britain, the ships painted entirely in green, their crews dressed in green.

In the Age of Sail
Age of Sail
The Age of Sail was the period in which international trade and naval warfare were dominated by sailing ships, lasting from the 16th to the mid 19th century...

, deception was often used by ships, and paint was applied ad hoc by ships' captains for temporary tactical advantage. A ship might be painted to look like another, it might have its cannon ports hidden by painted canvas to look harmless, or it might have additional cannon ports painted on to appear more powerful. As one example among many, for one of his battles during 1778–1782, American privateer
Privateer
A privateer is a private person or ship authorized by a government by letters of marque to attack foreign shipping during wartime. Privateering was a way of mobilizing armed ships and sailors without having to spend public money or commit naval officers...

 Jonathan Haraden
Jonathan Haraden
Jonathan Haraden was a privateer during the American Revolution.-Biography:Born in Gloucester, Massachusetts, Haraden joined the Massachusetts State Navy in July 1776 as First Lieutenant of the sloop-of-war Tyrannicide, fourteen guns...

 hid the guns of his ship the General Pickering, to appear as if it were a slow merchant ship. Haraden allowed his ship to be approached at close range by a much faster British privateer, then he quickly pulled the painted canvas away and delivered a full broadside
Broadside
A broadside is the side of a ship; the battery of cannon on one side of a warship; or their simultaneous fire in naval warfare.-Age of Sail:...

, capturing the enemy.

In the American Civil War
American Civil War
The American Civil War was a civil war fought in the United States of America. In response to the election of Abraham Lincoln as President of the United States, 11 southern slave states declared their secession from the United States and formed the Confederate States of America ; the other 25...

, camouflage paint was applied by both sides during the Union blockade
Union blockade
The Union Blockade, or the Blockade of the South, took place between 1861 and 1865, during the American Civil War, when the Union Navy maintained a strenuous effort on the Atlantic and Gulf Coast of the Confederate States of America designed to prevent the passage of trade goods, supplies, and arms...

 of 1861–1865. Blockade runners aiding the Confederates sometimes painted their ships all in mist-gray, to hide themselves in coastal fog. One Union blockade crew may have painted their rowboat white, and its oars, and wore white clothing for a night reconnaissance patrol up an enemy-held river.

In the 1890s, German and French fighting ships were being painted gray. American interest in ship camouflage was given official funding in 1898 during the Spanish–American War when white, light gray, and medium gray paint schemes were evaluated for their ability to hide a ship as seen against the distant sky on the horizon. Artist Abbott Handerson Thayer
Abbott Handerson Thayer
Abbott Handerson Thayer was an American artist, naturalist and teacher. As a painter of portraits, figures, animals and landscapes, he enjoyed a certain prominence during his lifetime, as indicated by the fact that his paintings are part of the most important U.S. art collections...

 investigated countershading
Countershading
Countershading, or Thayer's Law, is a form of camouflage. Countershading, in which an animal’s pigmentation is darker dorsally, is often thought to have an adaptive effect of reducing conspicuous shadows cast on the ventral region of an animal’s body...

 color schemes to disrupt natural shadows. British ships began being painted gray in 1903. In 1913, American camouflage experiments included a submarine painted in a three-color pattern of broad vertical stripes designed by William Mackay
William MacKay
William Andrew Mackay was an American artist who created a series of murals about the achievements of Theodore Roosevelt. Those three murals, completed in 1936, were installed beneath the rotunda in the Roosevelt Memorial Hall of the American Museum of Natural History in New York...

, using white stripes to separate green and blue stripes.

First World War

At the beginning of World War I
World War I
World War I , which was predominantly called the World War or the Great War from its occurrence until 1939, and the First World War or World War I thereafter, was a major war centred in Europe that began on 28 July 1914 and lasted until 11 November 1918...

, the increasing range of naval guns, and the great fear of high-speed, long-range torpedoes used against warships and merchant ships caused a significant increase in the use of ship camouflage.

These schemes were used on merchant ships and smaller warships. Battlefleets continued to be painted in various shades of gray.
  • Admiralty dazzle camouflage
    Dazzle camouflage
    Dazzle camouflage, also known as Razzle Dazzle or Dazzle painting, was a camouflage paint scheme used on ships, extensively during World War I and to a lesser extent in World War II...

     was intended as an anti-submarine measure for merchant ships sailing independently.
  • Mackay Low Visibility System was violet
    Violet (color)
    As the name of a color, violet is synonymous with a bluish purple, when the word "purple" is used in the common English language sense of any color between blue and red, not including either blue or red...

     with red or green patches or speckles.
  • Mackay Disruptive/Low Visibility System had solid blue on the lower hull, with green, orange and white in bold, undulating shapes above.
  • Toch Disruptive/Low Visibility System had parallel, curving diagonal stripes of gray, green, purple, red, brown and white. Used for troop transports.
  • Warner Disruptive Dazzle System had large, curving shapes in red, blue and green, mixed in with white or gray shapes. Used for troop transports
  • USN Dazzle Painting was similar to the Admiralty system, but used medium size polygons and more muted colors.

United States

In 1935, the United States Navy
United States Navy
The United States Navy is the naval warfare service branch of the United States Armed Forces and one of the seven uniformed services of the United States. The U.S. Navy is the largest in the world; its battle fleet tonnage is greater than that of the next 13 largest navies combined. The U.S...

 Naval Research Laboratory began studies and tests on low visibility camouflage for ships. Research continued through World War II
World War II
World War II, or the Second World War , was a global conflict lasting from 1939 to 1945, involving most of the world's nations—including all of the great powers—eventually forming two opposing military alliances: the Allies and the Axis...

 to (1) reduce visibility by painting vertical surfaces to harmonize with the horizon and horizontal surfaces to blend with the sea, or (2) confuse identity and course by painting obtrusive patterns on vertical surfaces. Some camouflage methods served both purposes:
  • Measure 1 – Dark Gray System was dark gray overall except for white structures above bridge level.
  • Measure 2 – Graded System was dark gray on the hull and light gray on the superstructure and turrets.
  • Measure 3 – Light Gray System was light gray overall. Replaced by Measure 23.
  • Measure 4 – Black System for Destroyers was black overall. This was intended for destroyer night operations but it was found that even on very dark nights, black ships were more noticeable than gray ones.
  • Measure 5 – Painted Bow Wave was a false bow wave to give the impression of high speed at all times.
  • Measure 6 – Light Cruiser to Simulate Heavy Cruiser was used to make a Brooklyn-
    Brooklyn class cruiser
    The Brooklyn-class cruisers were seven light cruisers of the United States Navy which served during World War II. Armed with 5 triple turrets mounting 6-inch guns, they and their near sisters of the St. Louis class mounted more heavy-caliber guns than any other US cruisers...

     or St. Louis-class cruiser
    St. Louis class cruiser (1938)
    The St. Louis class light cruisers were a pair of warships that served in the US Navy during World War II. The class was a slight modification of the seven-ship that immediately preceded them, incorporating new higher pressure boilers and a new boiler arrangement, as well as improved AA armament...

     resemble a New Orleans-class cruiser
    New Orleans class cruiser (1931)
    The New Orleans class cruisers were a class of seven heavy cruisers built for the United States Navy in the 1930s, the last built under the Washington Naval Treaty before World War II. They were an improvement on the heavy cruisers...

    .
  • Measure 7 – Old Cruiser to Simulate Old Destroyer was used to make an resemble a .
  • Measure 8 – Modern Cruiser to Simulate Modern Destroyer was used to make a Brooklyn-
    Brooklyn class cruiser
    The Brooklyn-class cruisers were seven light cruisers of the United States Navy which served during World War II. Armed with 5 triple turrets mounting 6-inch guns, they and their near sisters of the St. Louis class mounted more heavy-caliber guns than any other US cruisers...

     or St. Louis-class cruiser
    St. Louis class cruiser (1938)
    The St. Louis class light cruisers were a pair of warships that served in the US Navy during World War II. The class was a slight modification of the seven-ship that immediately preceded them, incorporating new higher pressure boilers and a new boiler arrangement, as well as improved AA armament...

     resemble a two-funnel destroyer. This measure was discontinued after causing station-keeping confusion among ships operating in formation.
  • Measure 9 – Black System for Submarines was black overall for submarines and is still in use.
  • Measure 10 – Gray System for Submarines was ocean gray overall for submarines that operated beyond the range of enemy aircraft.
  • Measure 11 – Sea Blue System was sea blue overall, including the decks. It was used in the Pacific and Mediterranean for concealment from aircraft. During the Battle of the Coral Sea
    Battle of the Coral Sea
    The Battle of the Coral Sea, fought from 4–8 May 1942, was a major naval battle in the Pacific Theater of World War II between the Imperial Japanese Navy and Allied naval and air forces from the United States and Australia. The battle was the first fleet action in which aircraft carriers engaged...

     and the Battle of Midway
    Battle of Midway
    The Battle of Midway is widely regarded as the most important naval battle of the Pacific Campaign of World War II. Between 4 and 7 June 1942, approximately one month after the Battle of the Coral Sea and six months after Japan's attack on Pearl Harbor, the United States Navy decisively defeated...

    , ships wearing Measure 11 came under attack less often than ships wearing Measure 12. On the advice of United States aviators, the Sea Blue color was darkened to navy blue and designated Measure 21.
  • Measure 12 - Graded System with sea blue low on the hull below the first continuous deck, with ocean gray above that. The top of the masts were painted haze gray. The only visible difference to the later mainly used Measure 22 was that the navy blue colour was painted parallel to the main deck, whereas with Measure 22 it was painted parallel to the waterline.
  • Measure 12 (Modified) – Graded System with splotches was sea blue low on the hull, ocean gray at about the main deck level, and haze gray above that. With experience, sea blue was substituted for the dark gray, and the Sea Blue was darkened to Navy Blue. During low visibility conditions, the Navy Blue was a near match to the water, and the splotchy gray blended well with the horizon. This measure was used widely in the Atlantic and Pacific until early 1943. This measure was found less effective against aerial observation during the early carrier aircraft battles of Coral Sea and Midway, and Measure 11 and its replacement Measure 21 became preferred in the Pacific.
  • Measure 13 – Haze Gray System was haze gray overall. This was the least used solid color measure during World War II
    World War II
    World War II, or the Second World War , was a global conflict lasting from 1939 to 1945, involving most of the world's nations—including all of the great powers—eventually forming two opposing military alliances: the Allies and the Axis...

    . This was found to provide reasonable protection in the widest range of conditions, and became a standard paint scheme after the war under assumed conditions of radar
    Radar
    Radar is an object-detection system which uses radio waves to determine the range, altitude, direction, or speed of objects. It can be used to detect aircraft, ships, spacecraft, guided missiles, motor vehicles, weather formations, and terrain. The radar dish or antenna transmits pulses of radio...

     observation.
  • Measure 14 – Ocean Gray System was ocean gray overall. This was used on supply ships, and became a standard paint scheme after the war.
  • Measure 15 was an irregular patchwork of greens, whites, and other colors. It was used in the summer and autumn of 1942, and was replaced by Measure 33.
  • Measure 16 – Thayer System was white with large polygonal patches of light sea blue (called Thayer Blue.) This measure was most useful in Arctic latitudes with extended twilight and frequent fog and cloud cover. Purity of color was important for full realization of the Purkinje effect
    Purkinje effect
    The Purkinje effect is the tendency for the peak luminance sensitivity of the human eye to shift toward the blue end of the color spectrum at low illumination levels.This effect introduces a difference in color contrast under different levels of...

     where some colors appear lighter and some appear darker at low levels of illumination. Darkening the pattern increased course deception, but increased visibility at night and in haze. This measure was used extensively through 1943 and early 1944 in North Atlantic and Aleutian waters. Replaced by Measure 33.
  • Measure 17 was a dazzle pattern of blues, grays and whites. It was only applied to three ships, , , and .
  • Measure 21 – Navy Blue
    Navy blue
    Navy blue is a very dark shade of the color blue which almost appears as black. Navy blue got its name from the dark blue worn by officers in the British Royal Navy since 1748 and subsequently adopted by other navies around the world....

     System was navy blue overall, including the decks. This measure was used extensively in the western and southern Pacific from mid-1942 through 1945 to minimize detection and identification by enemy aircraft. Measure 21 also proved effective under artificial illumination during night actions. Upper surfaces of aircraft operating from carrier decks were painted a similar shade of blue. Sailors were ordered to wear dungarees rather than white uniforms when topside. This largely replaced measure 11.
  • Measure 22 – Graded System was navy blue low on the hull below the first continuous deck (painted parallel to the waterline), with ocean gray above that. This bold contrast on a horizontal line near the horizon reduced visibility to surface observers and created the illusion of greater range. This measure largely replaced Measure 12 where aerial observation was unlikely. This system was considered most effective for gunnery engagements with surface units or shore batteries. This measure was used in the Atlantic and European coastal waters from the end of 1942 through the end of World War II
    World War II
    World War II, or the Second World War , was a global conflict lasting from 1939 to 1945, involving most of the world's nations—including all of the great powers—eventually forming two opposing military alliances: the Allies and the Axis...

    . It was worn by shore bombardment ships in the Pacific from late 1944 after the destruction of Japanese naval aviation capability at the Battle of the Philippine Sea
    Battle of the Philippine Sea
    The Battle of the Philippine Sea was a decisive naval battle of World War II which effectively eliminated the Imperial Japanese Navy's ability to conduct large-scale carrier actions. It took place during the United States' amphibious invasion of the Mariana Islands during the Pacific War...

    .
  • Measure 23 – Light Gray System was light gray overall, used by anti-submarine vessels in the tropics
    Tropics
    The tropics is a region of the Earth surrounding the Equator. It is limited in latitude by the Tropic of Cancer in the northern hemisphere at approximately  N and the Tropic of Capricorn in the southern hemisphere at  S; these latitudes correspond to the axial tilt of the Earth...

     or subtropics
    Subtropics
    The subtropics are the geographical and climatical zone of the Earth immediately north and south of the tropical zone, which is bounded by the Tropic of Cancer and the Tropic of Capricorn, at latitudes 23.5°N and 23.5°S...

    . Replaced by Measure 33.
  • Measure 31 – Dark Pattern System was an army-style pattern of greens, browns and grays used by smaller ships like landing craft
    Landing craft
    Landing craft are boats and seagoing vessels used to convey a landing force from the sea to the shore during an amphibious assault. Most renowned are those used to storm the beaches of Normandy, the Mediterranean, and many Pacific islands during WWII...

     and PT boat
    PT boat
    PT Boats were a variety of motor torpedo boat , a small, fast vessel used by the United States Navy in World War II to attack larger surface ships. The PT boat squadrons were nicknamed "the mosquito fleet". The Japanese called them "Devil Boats".The original pre–World War I torpedo boats were...

    s that operated close to shore.
  • Measure 32 – Medium Pattern System was a mixture of obtrusive polygons in navy blue or black, against background polygons of lighter grays and greens. This measure emphasized mistaken identity and course deception to complicate submarine attack. Patterns were carried across the bow, and light gray was used aft to blend with the wake. This measure was based on the World War I
    World War I
    World War I , which was predominantly called the World War or the Great War from its occurrence until 1939, and the First World War or World War I thereafter, was a major war centred in Europe that began on 28 July 1914 and lasted until 11 November 1918...

     dazzle system modified by observations in the western Pacific. Measure 32 was applied to most surface ships in Pacific during 1944 and 1945. Different patterns were devised for classes with large numbers of ships so the pattern would not identify the class of ship.
  • Measure 33 – Light Pattern System was a mixture of polygons in various grays and lighter greens. This was very suitable for northern waters and replaced Measures 15, 16 and 23.

Except in measures 11 and 21, decks were a blue gray shade.

United Kingdom

Between the wars, British naval ships
Royal Navy
The Royal Navy is the naval warfare service branch of the British Armed Forces. Founded in the 16th century, it is the oldest service branch and is known as the Senior Service...

 were generally dark gray in northern waters, and light gray in the Mediterranean or tropical waters. In the first year of the war British captains largely painted their ships as they saw fit. As the war continued, the Admiralty
Admiralty
The Admiralty was formerly the authority in the Kingdom of England, and later in the United Kingdom, responsible for the command of the Royal Navy...

 introduced various standardized camouflage schemes.
  • Western Approaches
    Western Approaches
    The Western Approaches is a rectangular area of the Atlantic ocean lying on the western coast of Great Britain. The rectangle is higher than it is wide, the north and south boundaries defined by the north and south ends of the British Isles, the eastern boundary lying on the western coast, and the...

     Scheme was white with large polygonal patches of light sea blue or light sea green. This was very suitable for the North Atlantic.
  • Mountbatten pink
    Mountbatten pink
    Mountbatten Pink, also called Plymouth Pink, is a naval camouflage colour, a shade of grayish mauve, invented by Louis Mountbatten of the British Royal Navy in autumn 1940 during World War II....

     was invented by Captain Louis Mountbatten. Its effectiveness was much disputed.
  • Admiralty Disruptive Patterns were a wide range of patterns in blues, grays and greens with mottled boundaries between the various color patches.
  • Admiralty Standard Schemes were light gray overall, except for a sea blue patch low on the hull, either between the main gun turrets or the entire length of the hull. They were much like the American measure 22.
  • Admiralty Alternative Scheme was a dark gray hull with light gray turrets and superstructure, like the American measure 2. It was popular in the Mediterranean.
  • Home Fleet Destroyer Scheme was like the Western Approaches Scheme but used darker shades of blue and gray on the rear third of the ship, to assist in station-keeping.

British decks were usually dark gray.

An experimental coating able to change colour was tested on Royal Navy submarines.
On suggestion by Professor Leslie Cromby, lead oxide
Lead oxide
Lead oxide may refer to:* Lead oxide, PbO, litharge, massicot* Lead oxide, Pb3O4, minium, red lead* Lead dioxide , PbO2Less common lead oxides are:* Lead oxide, Pb2O3, lead sesquioxide...

 was applied to the hull, enabling it to become black on application of a solution of sulphite and sea water for night operation.
For day sailing, a solution of hydrogen peroxide
Hydrogen peroxide
Hydrogen peroxide is the simplest peroxide and an oxidizer. Hydrogen peroxide is a clear liquid, slightly more viscous than water. In dilute solution, it appears colorless. With its oxidizing properties, hydrogen peroxide is often used as a bleach or cleaning agent...

 and sea water would be applied, producing sulfate
Sulfate
In inorganic chemistry, a sulfate is a salt of sulfuric acid.-Chemical properties:...

 and returning the hull to a white colour desirable for diurnal conditions.

Other navies in World War 2

The Royal Canadian Navy
Royal Canadian Navy
The history of the Royal Canadian Navy goes back to 1910, when the naval force was created as the Naval Service of Canada and renamed a year later by King George V. The Royal Canadian Navy is one of the three environmental commands of the Canadian Forces...

 experimented with variable diffused illumination of one side of ships to match horizon light levels and minimize silhouettes during prolonged arctic twilight or aurora borealis.

German Kriegsmarine
Kriegsmarine
The Kriegsmarine was the name of the German Navy during the Nazi regime . It superseded the Kaiserliche Marine of World War I and the post-war Reichsmarine. The Kriegsmarine was one of three official branches of the Wehrmacht, the unified armed forces of Nazi Germany.The Kriegsmarine grew rapidly...

 ships before the Second World War were either light gray overall or had dark gray hulls. Many retained this scheme during the war. Others had dazzle camouflage, usually in combinations of pale gray, dark gray and sea blue. Smaller ships were painted a very pale gray to blend in with the mists of northern European waters. Larger ships often had their bows and sterns painted a different shade from the rest of the hull. German decks were a very dark gray.

Italian ships of Mussolini's navy retained its pre-war scheme of light gray overall for its smaller ships, but the larger units mostly had dazzle camouflage of dark gray, light sea blue, light sea green and light gray. Italian foredecks had a high-visibility pattern of red and white diagonal stripes so that their own aircraft would not attack them.

Japanese ships
Imperial Japanese Navy
The Imperial Japanese Navy was the navy of the Empire of Japan from 1869 until 1947, when it was dissolved following Japan's constitutional renunciation of the use of force as a means of settling international disputes...

 largely retained their pre-war dark gray paint scheme, although some major units like aircraft carrier
Aircraft carrier
An aircraft carrier is a warship designed with a primary mission of deploying and recovering aircraft, acting as a seagoing airbase. Aircraft carriers thus allow a naval force to project air power worldwide without having to depend on local bases for staging aircraft operations...

s changed to a dark sea green. Some aircraft carriers had their flight decks painted in a dazzle camouflage, but this seems to have been ineffective.

Soviet ships
Soviet Navy
The Soviet Navy was the naval arm of the Soviet Armed Forces. Often referred to as the Red Fleet, the Soviet Navy would have played an instrumental role in a Warsaw Pact war with NATO, where it would have attempted to prevent naval convoys from bringing reinforcements across the Atlantic Ocean...

 were dark gray overall, sometimes with medium gray upperworks.

The French Navy
French Navy
The French Navy, officially the Marine nationale and often called La Royale is the maritime arm of the French military. It includes a full range of fighting vessels, from patrol boats to a nuclear powered aircraft carrier and 10 nuclear-powered submarines, four of which are capable of launching...

 used light gray before the war and under the Vichy
Vichy France
Vichy France, Vichy Regime, or Vichy Government, are common terms used to describe the government of France that collaborated with the Axis powers from July 1940 to August 1944. This government succeeded the Third Republic and preceded the Provisional Government of the French Republic...

 regime. Free French
Free French Forces
The Free French Forces were French partisans in World War II who decided to continue fighting against the forces of the Axis powers after the surrender of France and subsequent German occupation and, in the case of Vichy France, collaboration with the Germans.-Definition:In many sources, Free...

 ships that operated with the British adopted one of the British schemes. Those that were refitted in American shipyards were usually repainted in the American measure 22.

Post World War 2

After the Second World War, the universal adoption of radar
Radar
Radar is an object-detection system which uses radio waves to determine the range, altitude, direction, or speed of objects. It can be used to detect aircraft, ships, spacecraft, guided missiles, motor vehicles, weather formations, and terrain. The radar dish or antenna transmits pulses of radio...

made camouflage generally less effective. However, camouflage might have helped United States warships avoid hits from Vietnamese shore batteries using optical rangefinders.

Citations

  • Williams, David (2001) Naval camouflage, 1914–1945 : a complete visual reference Naval Institute Press ISBN 1-55750-496-2

External Links

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