What was the longest a World War II submarine stayed at sea without being resupplied at a port?

What was the longest a World War II submarine could stay at sea without being resupplied? As far as I know, U-196 holds the record. It left Kiel on 13 March 1943, and returned to Bordeaux on 23 October 1943, spending 225 days at sea.

How long could WWII submarines stay submerged?

48 hours

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 close did German U-boats get to the United States?

On April 14, 1942, the first German U-boat fought by the American navy in U.S. waters was sunk sixteen miles southeast of Nags Head.

How long could the first submarines stay underwater?

How long can it stay underwater? NAUTILUS was the first true submarine and could stay underwater for very long periods of time. Whereas World War II submarines would remain submerged for 12-48 hours. NAUTILUS could remain underwater for two weeks or more.

How many German U-boats are still missing?

A U-boat of this type, listed for decades as being sunk off Gibraltar, was found on the sea bottom about 60 miles off the coast of New Jersey in 1991. According to the definitive website Uboat.org, a total of 50 German U-boats remained unaccounted for after the end of World War II.

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.

How deep could a World War II submarine dive?

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).

Did any German U-boats defect to America?

According to the press release, the sub was likely missed by previous searchers because of its depth and because it was nine nautical miles west of the position reported by the bomber crew in 1945. While there’s no evidence U-3523 made it to South America, at least one Nazi sub did.

Do any German U-boats still exist?

“Today, only five U-boats remain and four of them are open to the public. So where can you visit these fascinating relics?” GERMANY PUT NEARLY 1,250 U-boats to sea in World War Two.

How many boats did the German U-boats sunk in ww2?

In World War II Germany built 1,162 U-boats, of which 785 were destroyed and the remainder surrendered (or were scuttled to avoid surrender) at the capitulation. Of the 632 U-boats sunk at sea, Allied surface ships and shore-based aircraft accounted for the great majority (246 and 245 respectively).

Which submarine sank the most ships in ww2?

the USS Tang

With 116,454 tons sunk, the USS Tang sank the most tonnage of shipping in World War II for the United States. Its tonnage was revised from the Joint Army–Navy Assessment Committee (JANAC) report, which initially credited Tang with fewer sinkings.

At what depth would a human be crushed?

Human bone crushes at about 11159 kg per square inch. This means we’d have to dive to about 35.5 km depth before bone crushes. This is three times as deep as the deepest point in our ocean.

What country had the most submarines in ww2?

The principle countries engaged in submarine warfare during the war were Germany, Italy, Japan, the United States, United Kingdom and the Soviet Union. The Italian and Soviet fleets were the largest.


Class Redoutable
Class lost 28
Enemy ships sunk 3
Displacement (tons) surfaced submerged 1,572 2,082
Length (feet) 303

What German U-boat sank the most ships?

List of successful U-boats contains lists of the most successful German U-boats in the two World Wars based on total tonnage.

World War I.

Boat SM U-35
Ships sunk 220
Patrols 17
Fate Surrendered, 26 November 1918
Captains Waldemar Kophamel Lothar von Arnauld de la Perière Ernst von Voigt Heino von Heimburg

What happened to German U-boats after the war?

Of the 156 U-boats that surrendered to the allies at the end of the war, 116 were scuttled as part of Operation Deadlight. The Royal Navy carried out the operation, and planned to tow the submarines to three areas about 100 miles (160 km) north-west of Ireland and sink them.

What was the last U-boat to surrender?

German (Type IXC) U-boat, U-858, surrendered to Allied forces on May 14, 1945, at Lewes, Delaware.

What was the last U boat sunk in ww2?


U-853 was one of the last U-boats sunk during World War II and, with U-881, the last to be sunk in US waters. Atherton and Moberly received joint credit for the kill.

What happened to German U-boats in Argentina?

And although men like Eichmann and Mengele got away on conventional passenger ships, two German submarines are known to have turned up in Argentina some months after the war in Europe ended on May 8 1945. U-530 surrendered to the Argentine navy at Mar del Plata on July 10 1945.

Did America have U-boats?

Once the United States entered the war, U-boats ranged from the Atlantic coast of the United States and Canada to the Gulf of Mexico, and from the Arctic to the west and southern African coasts and even as far east as Penang.

How many submariners died in ww2?


During World War II, the U.S. Navy’s submarine service suffered the highest casualty percentage of all the American armed forces, losing one in five submariners. Some 16,000 submariners served during the war, of whom 375 officers and 3,131 enlisted men were killed.

Why did they call German submarines U-boats?

These U-boats (an abbreviation of Unterseeboot, the German word for “undersea boat”) prowled the oceans in search of prey and could attack ships 20 times their size from both above and below the surface with their deck guns and torpedoes.

How many German U-boats were sunk in the Gulf of Mexico?

More than 4,600 merchant sailors, naval personnel and civilians perished, while Germany lost just eight U-boats and 332 crewmen.

How many ships did German U-boats sink off the Florida coast?

Over the first seven months of 1942, the Germans sank nearly 400 vessels, including more than thirty-five ships off Florida. The most dramatic sinking in Florida waters took place the night of April 10, 1942, when U-123 torpedoed the tanker Gulfamerica off Jacksonville Beach.

How deep is the Gulf of Mexico?

The deepest point of the Gulf of Mexico is called Sigsbee Deep. It is 17,070 feet (5,203 meters) below sea level in the Mexico Basin.

Are there any submarines in the Gulf of Mexico?

The Akula-class submarine, an attack warship capable of carrying long-range ballistic missiles, traveled in the Gulf of Mexico in June and July, the Washington Free Beacon reported Tuesday.

Can Russian ships enter the Gulf of Mexico?

But the Gulf of Mexico is international waters, so there’s nothing illegal about a Russian navy vessel, submarine or surface, from being there.

How many ships did the U-boats sink?

5,000 ships

The German navy used the Unterseeboot, or U-boat, to sink 5,000 ships measuring more than 13 million gross register tons during the war.

Do we know where the Russian submarines are?

The submarine fleet is concentrated on the Kola Peninsula in the Arctic Circle.

Can a satellite see a submarine?

However, satellites, too, could use quantum sensors to influence submarine warfare. Satellites using quantum gravimeters, which could improve sensitivity of sensors designed to detect and measure gravity fields, could potentially detect submarines, or more likely, map out seafloors with new levels of precision.

Did a Russian sub surface of the US coast?

Russian nuclear submarine of the Borey project, which carries 16 Bulava ballistic missiles on board, unexpectedly appeared off the coast of the United States, causing serious concerns in Washington.

What country has the most submarines?

Here are the 10 countries with the most submarines:

  • China (79)
  • United States (68)
  • Russia (64)
  • North Korea (36)
  • Iran (29)
  • South Korea (22)
  • Japan (20)
  • India (17)

What is the deadliest submarine in the world?

The U. S. Navy’s Ohio-class guided missile submarine tops a ranking of the 49 most advanced and dangerous submarines in the world.

Why do Russian submarines have windows?

This means that the pressure equalizes on both sides of the windows. So they don't crack. Only what's inside the pressure hall remains dry and the pressure hall has no windows.