- How long can a diesel sub stay underwater?
- What country has the most advanced submarine?
- Which country has the best submarines?
- Why are diesel submarines quieter than nuclear?
- What is the quietest submarine?
- Does the US still have diesel subs?
- Can you smoke on a submarine?
- What is the longest a submarine has stayed submerged?
- Why do you have to be quiet on a submarine?
- Do nuclear subs have diesel engines?
- What is the most dangerous submarine?
- How deep can a nuclear sub go?
How long can a diesel sub stay underwater?
Diesel-electric subs resurface every few days to charge their batteries.
And nuclear-powered subs resurface every few months for food.
Otherwise they could stay underwater for up to 25 years!.
What country has the most advanced submarine?
A Russian military submarine. North Korea has 83 submarines, which is more than any other country in the world.
Which country has the best submarines?
Currently top 10 attack submarines in the world are these:Nr.1 Seawolf class (USA) … Nr.2 Virginia class (USA) … Nr.3 Astute class (United Kingdom) … Nr.4 Graney class (Russia) … Nr.5 Sierra II class (Russia) … Nr.6 Improved Los Angeles class (USA) … Nr.7 Akula class (Russia) … Nr.8 Soryu class (Japan)More items…
Why are diesel submarines quieter than nuclear?
Stealth: Nuclear powered submarines have become very quiet—at least an order of magnitude quieter than a diesel submarine with its engine running. … The hydraulics in a nuclear reactor produce noise as they pump coolant liquid, while an AIP’s submarine’s engines are virtually silent.
What is the quietest submarine?
2020 — Saab’s Ghost stealthy technology, which stands for Genuine HOlistic STealth, is Saab’s quietest technology ever—and even quieter than their upgraded Gotland-class submarine. The incredibly low acoustic signature of this super-quiet submarine is achieved through a variety of means.
Does the US still have diesel subs?
The diesel submarines of today are not those of the days of the USS Nautilus. They operate much more quietly on new-generation diesel engines with advanced batteries. AIP technology has improved significantly the stealth performance of a new generation of submarines at a fraction of the cost of a nuclear-powered boat.
Can you smoke on a submarine?
The Navy announced today a ban on smoking aboard submarines while they are deployed below the surface after medical testing showed non-smokers suffered effects of second-hand smoke. … Mark Jones of the Commander Naval Submarine Forces out of Norfolk, Va., said about 40 percent of the submarine sailors are smokers.
What is the longest a submarine has stayed submerged?
The longest submerged and unsupported patrol made public is 111 days (57,085 km 30,804 nautical miles) by HM Submarine Warspite (Cdr J. G. F. Cooke RN) in the South Atlantic from 25 November 1982 to 15 March 1983.
Why do you have to be quiet on a submarine?
Silent running is a stealth mode of operation for naval submarines. The aim is to evade discovery by passive sonar by eliminating superfluous noise: nonessential systems are shut down, the crew is urged to rest and refrain from making any unnecessary sound, and speed is greatly reduced to minimize propeller noise.
Do nuclear subs have diesel engines?
All naval nuclear reactors currently in use are operated with diesel generators as a backup power system. These engines are able to provide emergency electrical power for reactor decay heat removal, as well as enough electric power to supply an emergency propulsion mechanism.
What is the most dangerous submarine?
Typhoon Class, Russia The Typhoon has a submerged displacement of more than 48,000t and is the world’s biggest submarine class. It is a nuclear-powered submarine equipped with ballistic missiles.
How deep can a nuclear sub go?
about 300mA 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 average depth of the Caribbean Sea is 2,200 meters, or about 1.3 miles. The average depth of the world’s oceans is 3,790 meters, or 12,400 feet, or 2 1⁄3 miles.