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Submarines
Submarines are naval craft that can operate for an extended period of time underwater. They are used primarily as warships, as well as for business, scientific and other purposes. Submarines are different from submersibles, which only have limited underwater capability.
2,056 Questions
How do you see out of a submarine?
Other than the periscope, which was designed to be extended up above the surface of the water to see what's on top, there isn't really a way to look out of a naval submarine. There are no windows or the like.
How do submarines use sound to find out what is around them?
the sonar technicians are trained to listen to the white noise from the hydrophones and pick out the sounds of propellers from other ships or subs, biological noise, basically anything in the water. from their sonar equipment they can find out what direction it is coming from and track its movements. sonar contacts are organized with a sierra designation.
under duress, subs can use active sonar. this is the classic ping. a warbling noise is emitted from the sub which carries and bounces off whatever we need to find a way to understand how to make sound with no objects, like how bats find their prey. the problem with active sonar is that everyone knows where the sub is when they use it, subs use echoes to see if there are any sort of objects in the sea and if it jumps back to the sub they have found and object.
How deep will a modern submarine go?
The Los Angeles class submarine has an operating depth of "greater than 800 feet" according to official releases. It doubtless goes a bit deeper. Some Russian boats, with their super tough titanium hulls (as opposed to the steel hulls of the US Navy boats and other Russian boats) can go deeper. How much deeper? The Russians are a little tight-lipped about that. Most think that depths in excess of 3,000 feet were easily accomplished, and one report suggested that 4,000 feet was within the reach of these vessels. People don't really talk much about that kind of stuff. As you might guess, the information is classified. Submarines are considered to be "self-sufficient" and able to operate for extended periods without support vessels. This differentiates the submarine from the submersible. Let's just look at those a moment.
Submersibles, which are not "true" submarines, operate independently from support vessels. With these civilian or research craft, the depths involved would be greater than with submarines. The Trieste reached a depth of 10,900 meters, or more than 35,000 feet when it dove the Pacific's Challenger Deep, the deepest spot in any ocean. The Alvin, the submersible that first dived the Titanic, can reach depths of 4500 meters. Alvin's replacement will be capable of reaching 6500 meters.
Is Alvin submarine self propelled?
Yes - Alvin (DSV-2) is completely battery powered when performing deep ocean operations, when released from its tender.
Which NJ river was the site of first submarine ride?
the Passaic River was the sight of the first submarine ride. Its inventor John P. Holland took the first ride in 1897
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Certainly there is every reason to secure fire-control (of weapons , not internal combustibles) on such as secretive vessel- also firing codes, (for guided missiles) are kept in locked combination safes, for obvious reasons. for interlocks between the bulkheads these are normally unlocked but can be remotely or locally secured to prevent flooding or control battle damage (Close the emergency doors) Also there are radio communications telegraph keys and probably special pre-coded gadgets to prevent unauthorized use. of course a telegraph key or bug is different than the locksmith use of the term.
Where is the first submarine located?
Cornelius Drebbel built the first workable submarine in 1620 using the 1578 plans of English mathematician William Bourne. The frame was constructed of wood, and it was wrapped with waterproof leather. It no longer exists.
The first submarine called the "Turtle" was reportedly destroyed. See the related link for more information.
How long can a submarine be in the water?
A nuclear powered submarine can remain submerged for as long as it has fuel rods and supplies for the crew.
What does SS mean in a US Navy rate?
"SS" is a warfare specialty designator, signifying a sailor is "Qualified in Submarines". The "SS" itself stands for "Submersible Ships", not "submarine sailor" as many people incorrectly assume.
"SS" designation also comes with its own warfare insignia pin, worn as silver (enlisted) or gold (officer) dolphins abreast the bow of a submarine.
Submarine qualification takes most sailors about 8-12 months, depending on their particular rate and workload aboard ship. Nuclear rates typically take less time, since part of their nuclear training is at a shore station nuclear power plant that is similar to a shipboard reactor.
Unlike other warfare designators (Surface, Aviation), it is mandatory for all submarine crewmembers, be it the lowest ranking sailor or the Captain, to qualify in submarines. Qualification is heavily weighted toward damage control during a casualty.
The rate designation is added at the end of the rate; e.g., my old rate designator was STS1(SS), which fully written out would be "Sonar Technician(Submarines) First Class (Submersible Ships).
The Confederate submarine H.L. Hunley's dimensions are as follows:
Displacement:7.5 short tons (6.8 metric tons)Length:39.5 feet (12.0 meters)Beam:3.83 feet (1.17 meters)Propulsion:hand-cranked propellerSpeed:4 knots (7.4 kilometers/hour) (surface)
Which country used submarines in world war 1?
Britain, France, Germany, Italy and USA all used submarines during WW1
Does Israel have nuclear submarine?
No - not only are they cost-prohibitive for such a small nation, Israel's Navy and coastline isn't that big to begin with.
Israel relies on several Diesel-Electric Dolphin-class submarines, which are built by Germany for the Israeli Navy.
Who was the first person to comeup with the idea of a submarine?
cornelius Drebbel built the first navigable submarine 1620 using English mathematician William Bourne's plans from 1578.
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What was the battle use of submarines?
Primarily the IJN & USN used subs for "battle." Reconnaissance and picking off special warships (flagships, carriers, etc.) was their mission. DKM primarily used their subs for merchant ship sinkings.
Why does a submarine sink and float?
A submarine has two main mechanisms that allow it to sink and return to the surface.
The submarine has dive tanks that can be filled with water to make the ship's weight the same as the water it displaces, or a little more. This causes the boat to sink. Air can be blown into those tanks to reduce the weight of the boat and it rises to the surface.
The second system uses the ship's propulsion and diving planes. These are fins (like wings) that can be tilted slightly up or down. When the ship is moving forward the diving planes are tilted to force the ship up or down. This is most effective when the dive tanks are perfectly balanced so that the weight of the boat exactly matches the weight of water outside.
What does unrestricted right mean?
An unrestricted right refers to a privilege or entitlement that is not limited by conditions, regulations, or restrictions. It allows an individual or entity to exercise that right freely without any constraints or limitations imposed by external authorities. This concept is often applied in legal contexts, such as property rights or freedoms of speech, where individuals can act without interference.
What is the price of a submarine in the us navy?
$2.4 billion for the newest Virginia Class attack submarines
Modern U.S. submarines are built by what is known as "Modular" construction. In the early days of Nuclear boats, construction was like any Navy vessel - from the keel up. However, with the advent of the Trident FBM submarines modular construction was developed, and found to be much more advantageous.
Essentially, each major compartment is built individually in separate sections. When completed to a certain point, the sections are brought together (they're constructed on a rail system) and then welded together. All systems are connected as the compartments come together. Seeing each section being built at the Shipyard is a real sight to behold, but not as much as seeing a Trident Submarine on the rails next to an LA class boat. What you actually see above water is only about 1/5 of the boat's actual size - most of it is underwater.
This construction method is much faster than the old way, and is just as strong. Use the link below to see an image of a module of a UK Astute class submarine on its way from a builder to the yards.
Yes and no - all modern military submarines have special forward-looking and top-sounding under-ice Sonar systems that not only detect ice, but can give the approximate thickness of the ice as well.
The forward-looking under-ice system scans at a much higher frequency and is separate from the main sonar array. The top-sounding system is essentially a reverse fathometer, giving the distance from the boat to the ice surface as well as the ice thickness. Ice thickness is essential to know in situations where surfacing through the ice is required.
As for open water icebergs, the noise created by the water movement against the iceberg can be detected by passive sonar, and of course detected by active sonar, though active is rarely, if ever, used.
It should be noted that large icebergs that are big enough to be a navigation hazard are monitored and tracked by major nations, and that information is made available to all military and commercial vessels. Large-mass icebergs in the open ocean are more of a hazard to submarines than surface vessels since their depth and mass below the water is generally a lot more than what is seen above the waterline.
