But diesel-electric submarines had two major weaknesses: when they were submerged they travelled quite slowly on battery power; and they needed to surface to allow the diesel engines to recharge the batteries. (Nuclear submarines have neither of these weaknesses, which is why they are so useful as warships.)
The only resource that limits the time underwater is the food supply for the crew and maintenance of the vessel. The stealth technology weakness of nuclear submarines is the need to cool the reactor even when the submarine is not moving; about 70% of the reactor output heat is dissipated into the sea water.
The main advantage of rockets and mortar weapons, such as anti-submarine grenades and anti-submarine rockets, is their rapid response time as they are carried through the air to the target. Once dropped on top of the target, they also have the advantage of not being sensitive to decoys or stealth features.
Light Ships and Helicopters have the ability to detect Submarines and are very effective in destroying them.
Submarine-launched torpedoes can seek and destroy other submarines and large surface ships at varying and long ranges. Furthermore, missiles fired from submarines can attack land targets hundreds of miles from the launch position of the missiles.
German submarine U-864 was a Type IXD2 U-boat of Nazi Germany's Kriegsmarine in World War II. On 9 February 1945, it became the only submarine in history to be sunk by an enemy submarine while both were submerged.
In submarines, this is controlled by ballast tanks. When the tanks are empty, the submarine has less mass and it floats like a normal ship. As water is allowed into the tanks, the mass of the submarine increases, the downward gravitational force on the submarine increases and the submarine begins to sink.
Common weapons for attacking submarines include torpedoes and naval mines, which can both be launched from an array of air, surface, and underwater platforms.
The ocean could be affected by high tsunami and/or pressure waves in the case of a large asteroid or comet impact. Most current submarines can survive at a depth of 400 m, so they might survive long pressure spikes created by the waves above them as high as 200–400 m, but not kilometer size waves.
The submarine had the potential to hide from gunfire and close underwater to fire torpedoes. Early-war destroyers had the speed and armament to intercept submarines before they submerged, either by gunfire or by ramming. Destroyers also had a shallow enough draft that they were difficult to hit with torpedoes.
Helicopters could hover and stay over a submarine and thus bomb the enemy with greater accuracy. Furthermore, the helicopters could rescue personnel from torpedoed vessels by lowering a rubber boat to the water and then hoisting it clear of the surface.
As long as submarines do not attack, they are invisible to the enemy.
Strategies. Destroyers are mostly used for protection against enemy Submarines. Destroyers have an Anti-Air Turret mounted on them for protection against planes. Destroyers are a perfect unit for protecting Oil Rigs because they can kill Submarines and planes easily.
"The main maritime threats to Japan are from China and North Korea and both countries are located geographically very close," said Fish, adding that Japan's fleet of diesel-electric powered submarines are "excellent platforms for operating in the Sea of Japan, Yellow Sea, East China Sea, the South China Sea and the ...
Typical submarines can break through about three feet of ice. Vessels that have been specifically strengthened can go through about nine feet.
A nuclear submarine can dive to a depth of about 300m. This one is larger than the research vessel Atlantis and has a crew of 134. The research vessel Atlantis, shown at the surface, is 274 feet long. At this scale the divers and their small boat are almost invisible.
Yes! Escape plans and tools are almost as old as submarine technology itself. Although the odds may always be stacked in favor of the merciless, cold depths of the sea, a few dozen lucky people have taken that unintentional ride down to the ocean floor and lived to see daylight again.
But reaching the lowest part of the ocean? Only three people have ever done that, and one was a U.S. Navy submariner. In the Pacific Ocean, somewhere between Guam and the Philippines, lies the Marianas Trench, also known as the Mariana Trench.
Ship attacked by 'sea monster'
The submarine was caught by the British HMS Coreopsis on April 30, 1918, as it was floating on the surface during the day. The German crew surrendered without resistance.
Without a doubt, one of the most unusual aircraft “kill” claims of all time is one attributed to the British submarine HMS Umbra, which is said to have brought down an enemy aircraft, using torpedoes, during World War II.
On May 7, 1915, German submarine U-20 torpedoed the Lusitania, a Cunard passenger liner, off the coast of Ireland. Nearly 1,200 men, women, and children, including 128 Americans, lost their lives. The Allies and Americans considered the sinking an act of indiscriminate warfare.
Do Submarines Hit Whales? A submarine hasn't ever hit a whale. This is probably more due to whales successfully avoiding submarines, than the other way around.
Relationships outside the chain of command are allowed, but there is a strict “no touching” rule during deployments. Sources said the rules were considered particularly critical on submarine missions where sailors work in cramped conditions underwater for months at a time.
Many spare parts are partially unpacked before being stored aboard. Waste that is discharged overboard must either be pumped out against the ambient sea pressure or blown out using pressurized air. Waste materials are collected and periodically discharged.