Thank you! Your pics are K-5 with the narrow stripes and K-2 with the wide stripes in 1916. Four subs were used with varying widths of zebra stripes. Testing revealed that all schemes actually made the boats easier to see! I'm going to use the narrow stripe pattern just as soon as I get a chance! This is great! I love both S-Boat dazzle skins! Keep 'em available, please.
There is a tantalizing piece of info over at
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Submarine visual camouflage became an issue again before the outbreak of the Second World War. This time the question was not only one of concealing a surfaced submarine, but also of hiding a submerged submarine from aerial observation. Once again, a series of trials was conducted to test various ideas. Tests between 1934 and 1936 were inconclusive. A new series was ordered and took place off Pearl Harbor in mid 1937. Four boats of the old "S" class were used. S-28 (SS-133) was painted entirely black, S-35 (SS-140) was dark blue-gray overall. S-21 (SS-126) was given a coat of dark purple. In a second series, disruptive patterns were used. S-21 carried black and green. S-35 was painted in black, blue and green. For a third, and final, test S-22 (SS-127) was given a pattern of dark blue and black. The conclusion reached from these experiments was that dark blue offered the best concealment in deep, clear, tropical waters. As a result, Commander SubRon 4 ordered boats of SubDiv 8 to be repainted in blue as paint became available. Paint for all navy ships was under the provence of the Bureau of Construction and Repair in the Navy Department and appropriate instructions were covered in the booklet issued by that Bureau known as C&R-4.
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