In water the skin drag is 1000 times higher than in a gas like air. This limits the velocity of torpedoes using classical propellers to 65 knots. During the sixties advanced marines developed rocket propelled torpedoes. In addition a generator injected hot gas at the stagnation point. This transformed immediately water into vapor. Then the torpedo could move inside this sort of gaseous bubble.
The corresponding US torpedo, named "Supercav", is able to reach 300 knots. Similar performance for the equivalent torpedo built at the same epoch by Russian, called "Sdqwal". But a MHD torpedo can go much faster. The electric power is produced by a wall generator, coupled to the nozzle of a solid propellant rocket.
This electric power feeds a MHD wall accelerator which covers all the surface of this one meter large machine and sucks water very efficiently. Russia and America are the only countries in the world to own MHD torpedoes, which gives them a great strategic advantage. Chinese would like to own such weapon. They tried to buy it to Russia.
A demonstration was planned, using the
Russian submarine "Koursk"', where a Chinese general, carried aboard
by an helicopter took place. American, warned by their secret
services, sunk the Koursk, using a British submarine which went to
close contact and fired a special temporized weapon. Two minutes
after the Koursk lied on the ground 107 meters deep. The admiral
nuclear ship "Pierre the Great" sent an ultrasonic message to the
Koursk, closing all its doors so that all the crew members were
This equipment is very complete. A rubber boat is located in a bag fixed on the left leg of the man. After inflation the man can take place in and easily stand cold.
If nobody used such equipment, from such
moderate depth, it confirms that the Russian submarine Koursk was
locked. A small submarine tried to pick the Chinese general and the
captain from the Russian submarine. But a mutiny occurred, which
caused many deaths. The evacuation of the Chinese VIP was abandoned.
The admiral ship Pierre the Great warned all ships present in the
zone that nyone which would like to get close to the Koursk would be
immediately sunk. Poutine let the hundred guys die.