An online database of camouflage used by 
United State Naval Warships during WWII


The Development of Naval Camouflage 1914 - 1945 
Part IV: United States Navy - The Interwar Years

By Alan Raven

 (Article reprinted courtesy of Plastic Ship Modeler Magazine issue #97/2)

the colors and schemes that were applied on a widespread basis to the fleets in early 1941.  Briefly stated, the tests produced the following conclusions:

1.) #5 Navy Gray was of low visibility in overcast, hazy, or foggy weather, hut was too light in bright weather or under searchlights.

2.) Ocean Gray was of low visibility in bright weather.

3.) Black was of lowest visibility in bright weather when viewed from the air, or at night under searchlights.

4.) Black was best for destroyers in view of their mission.

5.) Dazzle camouflage on destroyers had more bad features than good ones.

6.) Graded painting on light cruisers gave some deception worthy of further consideration.

It was suggested that all naval surface ships should be painted a dark matte gray, pole masts to be painted #5 Navy Gray.  The advantage of such a dark color (9% reflectance factor) was that it gave low visibility from the air, day or night, and under searchlights. In daylight the dark gray obscured details and interfered with course estimation. At moderate speeds it obscured the waterline and interfered with ranging. The disadvantage of using dark gray was that the vessel so painted would be moderately or highly visible in daylight to a surface observer. As an anti-searchlight measure, the best color was deemed to be black.

Further tests were recommended on destroyers using dark gray and dark blue, on cruisers using dark gray and ocean gray, and a graded type: painting a 6" gun cruiser to look like an 8" gun cruiser.

Copies of the report on the 1939 experiments were circulated in late January 1940 to various interested parties and commands for their information and comments.

Documentation for developments in 1940 appears to have been lost or destroyed because the question of surface ship camouflage does not arise again unti1 January 1941 when a revised edition of Construction & Repair-4 1937 was published.  Known as Ships-2 1941, it laid out a series of instructions and directions as to how ships might be painted generally with a view to promote low visibility. Much of the information in Ships-2 was taken directly from the 1939 experiments.

There were nine types of camouflage listed, from which the Commanders of the Atlantic, Pacific, and Asiatic Fleets could choose those that were best for their operations.  Each type was now officially named a "measure".  There were nine measures and four new colors were introduced.  The four new colors were 5-L Light Gray, 5-0 Ocean Gray, 5-D Dark Gray, and Black.  Measures one through nine were as follows:

Measure 1 - Overall 5-D Dark Gray, masts and tops to he 5-L Light Gray

Measure 2 - Graded Type - Lower band to be 5-D Dark Gray, middle band to be 5-0 Ocean Gray and topmost color to be 5-L Light Gray.

Measure 3 - Light Gray type - overall 5-L Light Gray.

Measure 4 - Overall Black - mast and tops to be 5-L Light Gray.

Measure 5 - Painted bow wave - the outline of the bow wave to be painted white, the body in dark gray or dark blue, to be used with Measures 1, 2, & 3.

Measure 6 - To paint a 6" gun cruiser to simulate an 8" gun cruiser.

Measure 7 - To paint a 6" gun cruiser to simulate a 4-stack destroyer.

Measure 8 - To paint a 6" gun cruiser to simulate a 2-stack destroyer.

Measure 9 - For submarines only - overall Black.

The new painting instructions from the Bureau of Ships did not actually reach the commands until late February, then were followed in March by a directive to perform experiments concerning different measures.  The extensive range of camouflage measures and the orders to perform tests at sea as to their value, laid the foundation for a confusing series of changes that became increasingly complicated as the year progressed, so much so that by years end, several new measures and colors had been tried and accepted into use, while conversely, several were dropped.

It is not surprising that, because of their proximity to the combat zone in the Atlantic, and later in the year with actual war level operations, the Atlantic Fleet took the initiative in usage and experimentation of camouflage.  Admiral King, then in command, took a personal interest in the subject.  At the end of March 1941 Admiral King ordered Atlantic Fleet ships to be painted as follows:

A. The Escort Force to be Measure 2.

B. The Support Force to he Measure 2.

C. Other forces to he Measure l.

D. For experimental purposes, ships of Destroyer Divisions 4 and 16 were to be painted in Measures 1, 2, 3, and 4, one measure for each ship.

E. For experimental purposes the ships of Cruiser Division 2 to be painted in Measures 1, 2, and 3, one measure for each ship.

F. For experimental purposes the battleship TEXAS to he painted in Modified Measure 2, using 5-D on the hull, 5-0 on superstructure 5-L above the level of the gun turrets.

The above directive was to be completed by mid-April. Being closer to bulk stocks of the new colors, the entire Atlantic Fleet was repainted by May.  It became immediately apparent that the new measures and colors were in most cases unsuitable for Atlantic and North Atlantic operations.  As a concealment color for northern waters, 5-D Dark Gray was just about the worst color that could have been chosen.  It is interesting to note that not a single pre-1940 experiment was conducted in the North Atlantic.  The Measure 2 graded type gave a degree of concealment but its effectiveness was reduced by the use of Dark Gray (a gray that was almost b black) in the design.

There was a secondary problem with the durability of the paints themselves. They were subject to excessive flaking which was caused by being excessively matte, and from being applied over the high gloss pre- war #5 Navy Gray, which did nothing to promote adhesion.

Because of the almost complete dissatisfaction in the Atlantic Fleet with Dark Gray, Admiral King initiated experiments on his flagship, the cruiser AUGUSTA, during the summer of 1941, wherein the graded system used Sapphire Blue on one side of the vessel and a color that was a mix of Sapphire Blue and Dark Gray on the other side.  This second color was the first application of what later in the year became known as Navy Blue.  There is unfortunately no record of the AUGUSTA experiments but Admiral King must have thought them

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