What is the longest time a submarine has been submerged?

The HMS Warspite's longest, submerged trip, from November 1982 through to March 1983, was publicly disclosed. They were immersed for 111 days!

How long can a submarine remain submerged?

Air isn't a problem as their make their own oxygen and keep the air clean. The limits on how long they can stay underwater are food and supplies. Submarines generally stock a 90-day supply of food, so they can spend three months underwater.

What's the longest time a submarine has stayed underwater?

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.

How long could ww2 submarines stay under water?

Model of the USS Balao (SS-285) Fleet Submarine

Two 126-cell battery groups gave her a submerged top speed of 8.75 knots (16.2 km/hr); holding her speed to 2 knots (4 km/hr), she could remain submerged for 48 hours.

How long can a British nuclear submarine stay underwater?

Britain's submarines could previously remain at sea for a maximum of 15 years before refuelling. The new iteration will last for a quarter century – the only reason it will need to resurface is to take on food. But does Godden really think Astute was harder to build than a Space Shuttle?

What is the longest a submarine has stayed submerged?

Can a submarine survive a nuclear bomb?

Submarines are also designed to withstand short pressure spikes from close explosions of deep charges and even nuclear explosions.

How long could German U boats stay submerged?

The Germans' most formidable naval weapon was the U-boat, a submarine far more sophisticated than those built by other nations at the time. The typical U-boat was 214 feet long, carried 35 men and 12 torpedoes, and could travel underwater for two hours at a time.

Why do diesel submarines have to surface?

The sub must surface (or cruise just below the surface using a snorkel) to run the diesel engines. Once the batteries are fully charged, the sub can head underwater. The batteries power electric motors that drive the propellers. Battery operation is the only way a diesel sub can actually submerge.

What happens to waste on a submarine?

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.

Do submarines make oxygen?

Oxygen in submarines is produced by putting sea water through a process of electrolysis. Submarines typically have a couple of big oxygen tanks as well, used to quickly raise oxygen concentration if the system fails.

How deep can US submarines dive?

It's generally accepted that the maximum depth (depth of implosion or collapse) is about 1.5 or 2 times deeper. The latest open literature says that a US Los Angeles-class test depth is 450m (1,500 ft), suggesting a maximum depth of 675–900m (2,250–3,000 ft).

How much does a submarine cost?

Submarines are quiet, deadly and expensive. Boats like those in the Virginia class, which is a U.S. attack submarine, can cost $3.4 billion and take seven years to build.

Do submarines hit whales?

Most subs have two types of sonar: active and passive. Active sonar sends out acoustic sounds, or “pings,” which can reach thousands of yards. If the ping bounces back, that means it hit an object—like a whale, a ship, or another submarine.

What is the deepest a submarine has gone?

Trieste is a Swiss-designed, Italian-built deep-diving research bathyscaphe which reached a record depth of about 10,911 metres (35,797 ft) in the Challenger Deep of the Mariana Trench near Guam in the Pacific.

What happens if a submarine goes too deep?

The name is foreboding and fairly self-explanatory; it's when the submarine goes so deep the water pressure crushes it, causing an implosion. The crush depth of most submarines is classified, but it's likely to be more than 400 metres.

What is snorting in submarine?

A submarine snorkel is a device which allows a submarine to operate submerged while still taking in air from above the surface. British Royal Navy personnel often refer to it as the snort.

What are the quietest submarines?

It can also stay submerged for up to three weeks with little exhaust heat—making the Type-212A virtually undetectable. The German Navy has boasted that it is the quietest submarine in operation today.

How thick is a submarine hull?

Making the hull. 4 Steel plates, approximately 2-3 in (5.1-7.6 cm) thick, are obtained from steel manufacturers.

How deep did submarines go in ww2?

World War II German U-boats generally had collapse depths in the range of 200 to 280 metres (660 to 920 feet). Modern nuclear attack submarines like the American Seawolf class are estimated to have a test depth of 490 m (1,600 ft), which would imply (see above) a collapse depth of 730 m (2,400 ft).

How deep could ww2 boats go?

World War II German U-boats of the types VII and IX generally imploded at depths of 200 to 280 metres (660 to 920 feet).

How deep could ww1 submarines dive?

Early world War I boats were designed with max depths as little as 150 feet. The idea was that a sub need go no deeper than necessary to get its conning tower below the keel of the deepest draft ships.

Could you survive a nuke in a fridge?

“The odds of surviving that refrigerator — from a lot of scientists — are about 50-50,” Lucas said.

What does a nuke smell like?

Other bombs smell like the materials which cause the explosion, e.g., napalm smells like gasoline and tnt smells like gun powder.

Will a fridge protect you from a nuke?

A lot of people would die, of course: It's an A-bomb. But there are some easy steps that can feasibly save your life from the most fearsome weapon ever created. Oh, and spoiler alert, the answer isn't: crawl inside a fridge. RULE NUMBER ONE: Nuclear bombs aren't as deadly as you think.