Submarines

Subs got longer as time progressed, for example, Germany's first U-boat (U1) was derived from a batch of subs bound for Russia during the Russo-Japanese War in 1904; those were about 139 feet in length. WWII US Navy Gato class subs were about 311 feet in length. By the time of the cold war, atomic subs were as long as WWII battleships...600 feet long!

For the very same reason US subs were a danger to Japan during WWII. Japan & Britain are both Islands. Islanders depend upon IMPORTS. Subs sink ships. Ships IMPORT!

Both Villareal CF and Cadiz CF are called the Yellow Submarine, from their shirt/uniform colours and tendency to go up and down through the ranks of various competitions.

The Trieste is now housed at the U.S. Navy Museum on the grounds of the Washington Navy Yard in Washington, D.C.

The vertical part near the middle of the submarine is the sail. If you're talking about the fin at the very back it's the rudder.

Communist China already had that technology. Refined and advanced technologies are always being swapped, stolen, or bribed by the covert/espionage people. For example, the USSR (today called Russia) received their first successful 4 engined bomber from the US; they stole it when one of the US B-29s landed in Russia from a bombing raid over Japan in WWII. Instead of returning it, they dissembled it bolt by bolt, and copied it bolt by bolt (under Stalin's orders), then they had their brand new B-29 Russian (Soviet) version. Same with the atom bomb; a US couple (husband and wife) sold/gave the US A-Bomb secrets to the Soviets (Russians) and the Soviets successfully exploded their first nuclear device in 1949. The couple that gave the secrets to the Soviets were executed in the US on or about 1955.

The first US tanks were copies of the British MK series and the French Renault model 1917. The very first German tank was a captured British tank, repainted with German markings and sent back across the lines to attack their original owners.

The US 1903 Springfield bolt action rifle that was supposedly all US designed and made had to pay Mauser for patent infringement fines.

The US Civil War Confederate iron-clad, the CSA Merrimac (or CSA Virginia) was a rebuilt CAPTURED US (Union) vessel.

Not enough. At an E-5 level in the Norfolk/Hampton roads area, I was collecting around 1700 a check. For 80-100 hours a week, that's not so hot.

The new photonics masts are much different than the older style periscopes, so they only extend about 30 feet (they don't have a hull penetration).

For traditional periscopes, usually around 30-40' above the sail/fairwater. Periscope depth for most modern submarines is about 65'.

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The USS Nautilus.

A German submarine was called a U-boat which was short for Unterseeboot (undersea boat). The Kriegsmarine did not name the submarines, but simply numbered them (like U-47, for instance).

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They are still called Unterseeboot, or U-boot.

A periscope looks like a long pipe with a bend on either end. One bend faces a direction, and the other bend faces the opposite direction.

This is the engine management warning light. It is supposed to look like the outline of a car engine! If it lights it means you have a fuel injection or ignition problem (or have had a problem recently - misfiring for instance).

Only nuclear-powered boats generate steam for propulsion, electrical, and potable water conversion. The heat from the reactor flashes water into steam; the pressurized steam is then channeled toward a set of turbine generators, which provide electricity and are also connected to main engines for propulsion. Sea water is also desalinated using the the steam (condensed for various crew/boat uses) and stored as potable water for drinking/bathing, or de-ionized water for making oxygen.

Submarines can see the surface of the ocean with a periscope when they are close to the surface.

Submarines have 2 or more hulls - the superstructure, which is the visible external hull you see, and the inner pressure hull, which contains all the primary equipment and houses the crew.

The space between the superstructure and the pressure hull is where the main ballast tanks are located, as well as line lockers, access/weapons hatches, etc. The pressure hull is where the crew lives and works (and keeps on working...). The primary reason there are 2 hulls is that the pressure hull, while optimally designed for maximum sea pressure resistance, isn't designed for optimum speed and maneuverability underwater. The superstructure, built over the pressure hull, streamlines the boat and compensates for this, making modern boats extremely fast and maneuverable underwater.

The best analogy is a thermos bottle, which has an outer shell (the superstructure) that protects and insulates the inner thermal bottle (the pressure hull). The Russians are known to use a double-layered superstructure on their larger boats, the theory being to insulate the pressure hull from a torpedo attack. The problem with that theory is that modern torpedoes don't need much proximity to severely damage or sink submarine, and any significant damage

To be able to submerge in the water, the sub has to become heavier. Ballast tanks are utilzed for this purpose. Water is let into them, and the sub sinks. To rise, air is pumped into the ballast tanks, and the sub rises.

Before WWII, torps were powered by compressed gas. This left a trail of bubbles on the surface, so since 1940 electric motors with propellers are used.

Under the worst possible conditions, a meltdown can occur in a nuclear submarine. It is an event of low probability, however.

The nuclear powered submarine was not developed until well after the war had ended. The USS Nautilus, which was launched on 21 January 1954, was the first operational nuclear submarine.

78 (72 active and 6 under construction)

There are two different types of submarines...

The Attack Sub, which is designed to seek & destroy enemy subs & surface ships.

The Ballistic Missile Sub, which is a nuclear-powered sub armed with long-range strategic missles.

As for as Attack Sub's, there is 1 Virginia Class (5 under construction), 2 Seawolf Class (1 under construction), & 51 Los Angelos Class.

As for as the Ballistic Missile Sub there are currently 18 active

You can purchase a submarine on eBay for $500,000.000.

The US Navy long ago coined a vessel classification code based on two or three letters, SS was assigned to Submarine ( by the way BB was assigned to Battleships, and DD to Destroyers, there are split variations such as DDR- Radar destroyer with heavy ECm equipment, SSN-Nuclear submarine, general type, SSBN, Nuclear sub, Ballistic Missile type ( such as Polaris using) and so on By itself SS designates a conventional, non-nuclear, that is Diesel-Electric submarine such as the U.S.S. Ling ( SS-297) which is a museum vessel in Hackensack, N.J. Take it in!

My ex served on a sub and he called himself and his fellow boat mates bubble heads.