But why then does the US Navy equip its submarines with laser cannons?

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The laser cannons and other blasters are no longer of the order of science fiction, or almost. An old dream of soldiers and Star Wars fans, directed energy weapons have been a concrete research subject since the 1960s.

In about fifty years, considerable progress has been made in this area and we find different types of weapons emitting energy towards a target without using projectiles. They generally use a beam of magnetic waves propagating at the speed of light, like high energy laser weapons (HEL).

For example, the first laser cannon (LaWs) was unveiled by the US Navy in 2014 to equip the USS Ponce, an American warship. In France, we even learned, in June of last year, that the National Office for Aerospace Studies and Research (Onera) and the Ministry of the Armed Forces were conducting tests on an anti-satellite laser weapon.

Although the vast majority in experimental stages, laser weapons develop as well on Earth, at sea as in the air. But what about a laser capable of being used under the sea, by submarines?

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Impossible, it seems, to develop such technology. For a simple reason: the laws of physics. Laser weapons, in two words, cannot work in underwater conditions, as the energy disperses and the beams are absorbed by the water almost immediately.

Public documents exhumed by the Popular Mechanics site reveal, however, that since at least 2011, the US Navy has concocted a plan to equip its Virginia nuclear submarines with laser weapons.

<p class = "canvas-atom canvas-text Mb (1.0em) Mb (0) – sm Mt (0.8em) – sm" type = "text" content = "According to the American media, crossing the information obtained with the opinion of several experts, the laser weapon of these submarines could be attached to its masts (…) Read more on Slate.fr

"data-reactid =" 30 "> According to the American media, crossing the information obtained with the opinion of several experts, the laser weapon of these submarines could be attached to its masts (…) Read more on Slate.fr