- Can you smoke on a submarine?
- What is the longest a submarine has stayed submerged?
- Is it cold on a submarine?
- How long can a submarine stay under the water?
- What is crush depth for a human?
- How deep can submarines go?
- Can a submarine go under the North Pole?
- Why are deep sea fish not crushed by pressure?
- How do submarines keep water out?
- Does a submarine go faster above or below water?
- How does a submarine not get crushed?
- How hard is it to find a submarine?
- Has a submarine ever hit a whale?
- Why do you have to be quiet in a submarine?
- Do submarines have WIFI?
- Why are submarines so dangerous?
- Do submarines hit things?
- How thick ice can a submarine break through?
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.
Is it cold on a submarine?
Even though the entire submarine has air cooling facility, only two decks are air-conditioned. The temperature in the rest of the submarine is around 30-35 degrees and the crew works in sweltering heat. … Submarines usually carry up to 75 personnel on board during its journey into the sea.
How long can a submarine stay under the water?
three monthsThe 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. The diesel-powered submarines (not now used by the United States Navy) had a limit of several days submerged.
What is crush depth for a human?
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.
How deep can submarines go?
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 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.
Can a submarine go under the North Pole?
On August 3, 1958, the U.S. nuclear submarine Nautilus accomplishes the first undersea voyage to the geographic North Pole. The world’s first nuclear submarine, the Nautilus dived at Point Barrow, Alaska, and traveled nearly 1,000 miles under the Arctic ice cap to reach the top of the world.
Why are deep sea fish not crushed by pressure?
Under pressure Fish living closer to the surface of the ocean may have a swim bladder – that’s a large organ with air in it, which helps them float up or sink down in the water. Deep sea fish don’t have these air sacs in their bodies, which means they don’t get crushed.
How do submarines keep water out?
The hull of a standard ship is the metal outside that keeps the water out. Most submarines have two hulls, one inside the other, to help them survive. The outer hull is waterproof, while the inner one (called the pressure hull) is much stronger and resistant to immense water pressure.
Does a submarine go faster above or below water?
Yes, as Larry has succinctly pointed out with a neat cross reference, the modern submarine travels faster underwater than on the surface. The use of a single mode of propulsion and a hull form optimised for underwater travel has brought this about.
How does a submarine not get crushed?
Because submarines are made of metal, and metal can only withstand a certain amount of pressure before buckling or collapsing, the strength of the metal and the design of the sub determines its ultimate depth limit. In reality, a submarine pilot would never take a sub anywhere near that depth.
How hard is it to find a submarine?
The only way to find a submarine is to listen – and sound has peculiar ways of traveling in water. Because they’re under water. You can’t see them, and can’t find them with radar. The only way to find a submarine is to listen – and sound has peculiar ways of traveling in water.
Has a submarine ever hit a whale?
Here’s a question that you don’t hear very often; if a submarine and a whale collided, who would emerge victoriously? The answer to that is not definite because such an incident has not occurred so far. However, back in 2005, the USS San Francisco did collide with a seamount at full speed.
Why do you have to be quiet in 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 submarines have WIFI?
Even when a submarine is on the surface, the crew’s access to the internet is severely restricted. … There would be NO allowed personal use of wi-fi or bluetooth within a submarine. The vessel MIGHT have a wired LAN for MWR, protected against signal leakage or intrusion.
Why are submarines so dangerous?
Submarines are a potent weapon system. They can fire torpedoes, launch missiles, lay mines, land covert parties and conduct secretive surveillance and intelligence operations. Surveillance, reconnaissance and intelligence gathering are major roles for submarines.
Do submarines hit things?
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.
How thick ice can a submarine break through?
about three feetPick Your Spot. Typical submarines can break through about three feet of ice. Vessels that have been specifically strengthened can go through about nine feet.