Camouflage "Dazzle"

[griffon]

En ce moment au musée de la marine du castellum de Brest

une expo sur le camouflage "Dazzle"

Un camouflage dont le but n'était pas de camoufler et de rendre discret !

[aheuc]

Oui, l'objectif était de rendre la visée par les télémetres optiques enneemis beaucoup plus compliqués. (Et à partir de là le calcul de la distance de tir).

[stratcom]

C'est au programme.

[Boudi]

Ça fonctionnait ?

[griffon]

Un moment , mais une des qualités de l'humain est de s'adapter

je suppose qu'après quelques échecs les allemands ont du

organiser des cours spéciaux à l'école des "Kaleuns" de Kiel

ou l'on apprenait (sur maquettes ) à calculer des solutions de tir correctes

malgré ce camouflage !

[stratcom]

Si j'en crois wiki, l'efficacité de ce dispositif n'a jamais été démontré.

https://fr.wikipedia.org/wiki/Camouflage_Dazzle

[Boudi]

L'article est ambigüe :

L'amirauté fut rapidement séduite par l'idée du camouflage disruptif, et le navire marchand SS Industry fut le premier à être peint de la sorte, afin d'en tester l'efficacité. Le test fut concluant...

[Reborn]

Toujours faire un tour sur le wiki anglais.

Dazzle's effectiveness was highly uncertain at the time of the First World War, but it was nonetheless adopted both in the UK and North America. In 1918, the Admiralty analysed shipping losses, but was unable to draw clear conclusions. Dazzle ships were attacked in 1.47% of sailings, compared to 1.12% for uncamouflaged ships, suggesting increased visibility, but as Wilkinson had argued, dazzle was not attempting to make ships hard to see. Suggestively, of the ships that were struck by torpedoes, 43% of the dazzle ships sank, compared to 54% of the uncamouflaged; and similarly, 41% of the dazzle ships were struck amidships, compared to 52% of the uncamouflaged. These comparisons could be taken to imply that submarine commanders did have more difficulty in deciding where a ship was heading and where to aim. However, the ships painted in dazzle were larger than the uncamouflaged ships, 38% of them being over 5000 tons compared to only 13% of uncamouflaged ships, making comparisons unreliable.[16][31]

With hindsight, too many factors (choice of colour scheme; size and speed of ships; tactics used) had been varied for it to be possible to determine which factors were significant or which schemes worked best.[32] Thayer did carry out an experiment on dazzle camouflage, but it failed to show any reliable advantage over plain paintwork.[33]

The American data were analysed by Harold Van Buskirk in 1919. About 1,256 ships were painted in dazzle between 1 March 1918 and the end of the war on 11 November that year. Among American merchantmen 2,500 tons and over, 78 uncamouflaged ships were sunk, and only 18 camouflaged ships; out of these 18, 11 were sunk by torpedoes, 4 in collisions and 3 by mines. No US Navy ships (all camouflaged) were sunk in the period.[34][h]

[Boudi]

En clair, on n'en sait rien.

[Reborn]

En clair, on n'en sait rien.

Oui, mais c'est chiffré.