Thought the Navy had/has an integrally suppressed Ruger Mark 2 that could be fired underwater. They could add a couple of tablespoons of water into the dry suppressor as well for further suppression.
I wish they had data on energy of the rounds or knots or however it would be measured
I also wonder with all the money and time spent on R&D, how many soldiers actually found a use for underwater combat. maybe I am just naïve, but I would think it would be a rare occurrence
I also wonder with all the money and time spent on R&D, how many soldiers actually found a use for underwater combat. maybe I am just naïve, but I would think it would be a rare occurrence
Firing cartridges under water is not a new thing. Its not suggested that it be done extensively for the reasons discussed, but "power heads" have been around for ever being capable of firing.357, .44 mag & even 12 & 10-gauge magnums They are essentially short barreled single shot firearms.
Yes they are very loud underwater but when "Mr Clark" wants to nibble on a diver's toes the whistling in the ears is a small price to pay.
One thing I noticed is none of these designs seem to use a projectile that self propels (kind of like what a torpedo does)
Firing a projectile under water is just not efficient due to the resistance of water. On the other hand, of you had projectiles that could jettison themselves to the proper velocity and maintain their thrust for a decent amount of distance, range and lethality could potentially be greatly increased.
Underwater is a whole new ball game. Because of that you can't directly translate the two. Frequently visibility underwater is 5~10 yards if not less. ("Braille divers" are happy when it is enough to see the inside of your mask) so long range is pretty much a pipe dream.
A Practical water~water or water~air scenario would probably be in the order of inches or feet!
The current-issue Russian underwater stuff uses "strelovidny"/"nail" cartridges, which self-stabilize underwater, because the "tail" of the dart follows the "bubble" formed by the point. There's a video at https://www.youtube.com/watch?v=x-P578pnctU , showing TsNIITochMash's APS ("Avtomat Podvodny Spetsialny"/Automatic, Underwater, Special) rifle, their SPP ("Spetsialny Podvodny Pistolet"/"Special Underwater Pistol") and the ammunition for each, along with them being loaded and fired.