Submarines

because when deep sea fish are brought up to the surface after living in such extreme pressure areas for their entire lives, the lack of pressure on them causes them to puff up. so basically, it's because the pressure greatly decreases.

It is not recommended or safe to make a homemade submarine. Building a submarine requires specialized knowledge, materials, equipment, and rigorous testing to ensure safety and functionality. It is best to leave submarine construction to professionals and certified engineers.

There are quite a few advantages to nuclear propulsion on a submarine.

1. Operational cost - While up-front construction costs are expensive, long term maintenance and operational costs are lower given the lack of need for fuel supplies for the main engines.

2. Range - Nuclear powered boats have unlimited range between refueling stops ( 5-10 years), and are only limited by crew / maintenance requirements. By comparison, their Diesel-Electric counterparts are limited in range by the amount of fuel they can carry.

3. Tactical Speed - All modern nuclear submarines are designed to escort/scout ahead of fleets/battle groups, and as such have great sustainable speed underwater (the old Russian ALFA fast-attack was known to achieve 45 knots submerged). DE boats just don't have that capability, as it drains their batteries too quickly.

Speed is also a great advantage when there's a torpedo headed toward you and you need to evade it.

4. Tactical Equipment - With increased electrical generating capacity comes increased equipment capability, and therefore overall tactical capability. Even in bigger boats, they just cram in more equipment; crew habitation comes second, though it's fairly comfortable by most shipboard standards.

5. Atmospheric Regeneration - Nuclear power allows for machines that constantly regenerate the atmosphere while submerged, generating oxygen and removing Carbon Monoxide/Carbon Dioxide/Particulates from the air. DE submarines do have regeneration capability, but it's limited, and that also limits crew size and overall tactical capability.

Even so, the air does get a bit stale after a couple of months if you don't bring in fresh air.

6. Water generation - Water distillation achieved by using the steam from reactor allows for thousands of gallons of water to be made daily for crew use.

7. Civilian Emergencies - Most people don't realize it, but all nuclear powered vessels have the capability of reversing their electrical generation flow from ship to shore in the event a city or town loses its power generation in a disaster. The amount of water generated can also provide thousands of gallons of fresh, potable water to disaster survivors.

There are three disadvantages to nuclear propulsion:

1. Spent fuel rods - The first is the need to deal with the used fuel. In years past, spent fuel was recycled into weapons-grade material for nuclear weapons, but since arms limitation treaties were signed, spent fuel has become a problem, particularly since environmentalists keep trying to block the opening of the Yucca Mountain Nuclear Waste disposal site.

In coming years this won't be as much of a problem, as there is development proceeding on "lifetime fuel", or reactors that are fueled for the life of the submarine.. This means that they won't have to refuel every several years as they do now, but will go 30 or more years before the need arises.

2. Sinking - If a nuclear powered boat sinks from enemy action or accident, radiation can possibly enter the ocean, but this hasn't yet proven to be a problem with the several known boats that have sunk over the past 50 years. Submarine reactor vessels are constructed to withstand extreme pressures and explosion damage to avoid such problems.

3. Noise - All nuclear powered boats, as do shore reactors, use active cooling systems, which mean active machinery coolant pumps. The main engines and turbine-generators are also powered by steam generated by the reactor.

The additional noise generated by the steam and machinery makes nuclear powered boats much noisier than their DE counterparts; however, advances over the past 50 years in ship silencing have reduced the underwater noise range of nuclear powered boats to rival that of DE submarines running on the battery.

People need a submarine or dive bell to protect themselves from the immense pressure experienced at deep underwater levels. Submarines and dive bells are designed to withstand high pressures and provide a controlled environment for divers to safely explore these depths without risking injury or death.

The deep blue crushed glass used in laundry is typically referred to as "laundry bluing." It is added to white laundry to help maintain or enhance whiteness by counteracting yellowing or dinginess caused by mineral deposits or detergents. Laundry bluing works by reflecting light, making clothes appear brighter and whiter.

plunger is a fitting name for submarine because , it is under the water

Yes, Hemingway used his private fishing boat to hunt Nazi submarines off the coast of Cuba.

don't know the actual record, but i know that the USS Parchee was "submerged" for 87 days in 1985/86(?).

When they go deep under water the pressure would increase so you would need stronger and thicker materials to cope with the force

If you're talking about passenger cruise ships, then it would be Royal Caribbean's Oasis and it's sister ship, Allure. They weigh in at 225,282 tons and can hold 6300 passengers!

America's support of the allies led Hitler to attack American ships.

true

Poseidon.

The bad guys in Yellow Submarine are called the Blue Meanies and they take over Pepperland because of there hatred for music.

The towed underewater sled that photograhed Titanic for the first time was Angus. The first submersible to dive on Titanic was the Alvin, originally named for famous explorer Al Vine, but joking named for Alvin the Chipmunk due to its small size and cramped quarters.

1.Yellow Submarine

2.Only A Northern Song

3. All Together Now

4.Hey Bulldog

5.It's All Too Much

6.All You Need Is Love

7.Pepperland

8.Sea Of Time

9.Sea Of Holes

10. Sea Of Monsters

11. March Of The Meanies

12.Pepperland Laid Waste

13.Yellow Submarine In Pepperland

Helicopter Anti-Submarine Squadron Fourteen's motto is 'Day and Night, Lightning Strikes!'.

Though only Navy records will have a full listing, the National Archives is a good place to start. In general, only PACFLEET (Pacific Fleet) boats (out of the West Coast of the US and Pearl Harbor) would've been assigned to cover operations off the coast of Vietnam. Though such information is now declassified, the actual information isn't usually kept as a single record; it would take a researcher to view all submarine records for those boats for the period indicated, and even some boat records are still classified due to their particular missions. We do know that there were, indeed, fast attack submarines in the South China Sea during the Vietnam conflict. By reviewing the records of individual boats, it might be possible to guess that they were there, particularly if a tour has "western Pacific" as a description of the operating area. But we can make some guesses. Consider just the Skipjack-class boats. Skipjack, SSN-585, was an east coast submarine, and so was Scorpion, SSN-589, which is on eternal patrol (meaning she was lost). They were not there. The USS Shark, SSN-591 was also on the east coast, and it, too, was not there. One boat that was certainly there (in 1967 and again 1971) was the USS Scamp, SSN-588. The USS Sculpin, SSN-590, may have been there on its tour of the western Pacific in 1964. USS Snook, SSN-592 was probably there in 1965, and again in 1969, 1970-71, and also in 1972. If you wish to poke around on the web, you might find that some Thresher/Permit-class submarines were also there. (As the USS Thresher, SSN-593, was lost, this class of boat takes the name of the next remaining sister ship, the USS Permit, SSN-594.) These newer submarines began appearing in the late 1960's, and it is possible that some were in that theater of operation. The fleet ballistic submarines (boomers) stayed away; there was no need for them to be in that small pond. They remained on patrol in the Pacific where they were less likely to be detected yet well within range of tactical targets with their Polaris missiles. Oh, and don't limit your thinking on this one. The Russians has a number of boats in the South China Sea at different times during the conflict as well.

David Bushnell invented the first war submarine

U-boats were a huge advantage to both Germans and Americans in WWI for multiple reasons:

-Torpedos could be shot and with no or short notice it would be launched towards the enemy. Hopefully reaching the boat

-Radars were invented to help sense torpedos and U-boats in the seas.

-Held multiple passengers that kept the boat running smooth and efficently

Overall, a huge success.. Germans sinking the Lusitannia from the U-boat... Killing many immigrants and 125 American Citizens

The submarine that was used during the American Revolution was called the Turtle or the American Turtle. It was designed to approach British ships that had occupied American harbors and place explosive devices on their hulls. All such attempts failed.

They believed.... It�s a European problem not ours> it was Not affecting U.S. We were wiped out from WWI> everyone remembers the last times ( wwI)..... it was a nightmere Preoccupied with the great depression