Submarines

Problems in restricted sinkings: 1. Takes too long to make the kill. 2. Submarine has to stay in one location & surfaced in one location too long. 3. Survivors abandoning vessel to be sunk present a problem; life-boats, food, sick and injured, etc. 4. Extended time on station (see #1) allows allies more time to locate, target, and destroy submarine. Benefits of UN-Restricted sinkings: 1. Saves submarine and crew from attack and being sunk. 2. Allows higher kills at sea, at minimal threat to submarine and crews.

well submersible is for exploring the water as a submarine is a war machine use well in wars

The USS Nautilus (SSN-571) was the first submarine to go to the north pole by navigating under the Arctic ise.

Yes, 19 German Submarines surrendered at Derry in May 1945. They were taken out to sea & sunk. They remain there to this day. There is a plan to refloat one.

There are several Co2 Removers used in the worlds submarines. But I would say the best is the TSMA or Temperature Swing Molecular Adsorber..... Note it is Adsorber, not Absorber.

Try this link

http://www.epa.gov/ttn/catc/dir1/fzeolite.pdf

KAK is the military separation code for "Expiration of Term of Service". Note that the military separation codes are subject to change, and that the military no longer releases the meaning of the codes to the general public. This was the meaning prior to the information ban.

Nope - "HMS" stands for "Her Majesty's Ship" (or His, depending on the ruler of the moment), and U.S. submarines, like all U.S. Navy commissioned warships, use "USS", or "United States Ship".

"HMS" is only used on ships or submarines within the realm of British Monarch (currently Queen Elizabeth II), primarily used by the British Royal Navy. It would also include navies from any country her realm, though they add their own country abbreviation within the acronym. Countries that include the acronym that have submarines are:

Canada: Her Majesty's Canadian Ship (HMCS) - Royal Canadian Navy

Australia: Her Majesty's Australian Ship (HMAS) - Royal Australian Navy

The answer is yes, but it might not be what you think. The early application of steam power to do work saw its use in a wide variety of vehicles, both on land (cars, trains, etc.) and on water (steamships). Steam generation requires a heat source, and in all the early applications of steam, some form of combustion was employed to boil the water. We had to burn something. That meant using air, or at least the oxygen in it. The submarine, which had long been dreamed about, had crept along in its development. But it always used human power (or springs or something else quirky) to drive it under water. Some early attempts were made at employing electric motors with batteries, and later on that finally became the key to building a "real" u-boat. Designers added an internal combustion motor that drove a generator, and they also added a big bank of batteries. The "modern" submarine began service. These submarines had to surface to charge batteries, but could run quite a few hours submerged. They had limitations, but were an extraordinarily effective weapon in World War II. (There are a lot of articles about that.) World War 2 ended on a note that saw the entrance of applied atomic energy. The use of a nuclear reactor as a heat source for powering a submarine, which had already been envisioned, was realized by designers and engineers, and then built. The submarine was given a nuclear reactor, the primary useful product of which is heat, and the heat was used to generate steam. No air is required in that process. Almost all of the new military submarines have a nuclear reactor, and it is used as a heat source. But they have "conventional" steam plants with steam driven turbines that power up the propeller (called a screw) and steam turbine generators that make electricity.

Current-generation U.S. nuclear submarines are likely to cost around $2 billion each to construct (after including R&D costs).

Germany was the only combatant of WWII without an aircraft carrier (they never finished their only carrier & if one doesn't count Italy & the Soviets). Consequently they had a weak navy. This being the case, the DKM had to concentrate on a strategy called "Guerre de Course", meaning fighting a sea war against merchant ships, sometimes referred to as "Commerce raiding." The best tool for this job was submarines. Germany had the most subs.

"Unterseeboot" (literally, Undersea Boat) is the German word for submarine. It is often referred to be it's nickname, "U-Boat" in English.

About a year.

Normally the hydrodynamic friction (movement through the water) is enough to slow down a boat as long as the screw is stopped. If we need to stop in a hurry we would ring up "all back emergency" on the engine order telegraph. That works quite well. I forgot to say that there are other reverse positions on the engine order telegraph: "all back 1/3," "all back 2/3" and "all back full" if my memory serves.

Each one added a new facet to the complexities of warfare. Machine guns gave infantrymen the ability to tote a massive amount of firepower and wreak horrendous casualties. Tanks resulted in a shift towards more mobile warfare, breaking the stalemate in the trenches. Submarines allowed blockaded navies like Germany to wreak havoc on the high seas and even the odds with nations which much larger surface navies. And airplanes brought warfare into the third dimesnion, bombing, fighting, scouting, and carrying.

Near South American oil fields.

The density will rise and submerge the submarine.

You have to build it to know how to construct it. Just carve it out of metal. It's very big and long. You need to ask your son to help you because at least two people are needed to build a submarine. It not waterproof though.

Merchant vessels supplied Britain with goods that it needed to continue the war. The Germans felt that to do so made the merchant vessels legitimate targets. They published warnings of this in US newspapers prior to the attack on the Lusitania.

Any boat that is sitting in drydock or moored next to a pier in port.

Submarines were sometimes referred to as submersibles.

It was President Jimmy Carter who served in the U.S. Navy, and aboard submarines. He was a crew member of the nuclear submarine SSN-575, the USS Seawolf.

An article in my towns newspaper said that over 20 were killed.

The accident occurred when a fire-extinguishing system went into operation in error aboard the submarine, Dygalo said. He said the dead included sailors and shipbuilders. The submarine was heading back to shore on its own power, and 21 people injured in the accident were evacuated to a ship that was escorting the sub. There were 208 people total aboard the vessel.

"Pressure in the Boat" is the proper term, and it is closely monitored while underway submerged. A drop in pressure indicates a leak somewhere onboard.

Once all hatches are closed and dogged, overall internal pressure is increased slightly to determine if there is a good seal on all hatches prior to diving. Air is bled into the pressure hull as necessary to do this, though the pressure isn't that much. The pressure is monitored constantly.

In emergency flooding cases, a compartment can be pressurized with compressed air to halt incoming water (or force it out).

Over time, pressure will increase as air is bled into the boat, and when surfacing and opening a hatch for the first time, crew must be extremely careful as the pressure is strong enough to eject a person out of the hatchway. All hatches have dog latches that prevent the hatch from being just being opened, and if there's too much pressure, it'll prevent the hatch from being blown open. However, it won't prevent someone from being blown into the hatch if they're not careful.