So they do come prepared for the occasion and like most ships, have an active radar and antenna system to detect aircraft and nearby boats as well as receive radio signals and internet. But commonly, submarines don't really need to worry about planes because they're usually warned ahead of time from under the water. Furthermore, do Submarines use radar?
to answer your original question, submarines don't use radar to find other subs/ships because radar really doesn't work in water. Short answer: Radar uses radio waves which are a form of electromagnetic radiation.
Similarly, do modern submarines have cameras? Submarines have running lights to be used on the surface in peacetime. They are not used in wartime of course. Military submarines do NOT have viewing ports or external remote cameras. There is no reason to see outside a military submarine when it is under water.
Hereof, do Russian submarines have windows?
Russian cold war era subs were notable for having windows in the conning tower. This allowed the crew better protection from the frigid temperature of the arctic when surfaced. When the sub submerges this area fills with and the pressure equalizes so the glass doesn't shatter.
Do submarines have Internet?
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.
Related Question Answers
Why do submarines not have windows?
There is no reason to have a window because submarines are submerged almost all the time. Besides, there is nothing to see. Submarines operate in open ocean and stay away from any kind of ocean floor. Using external lights to allow people to look through a window would defeat the purpose of being stealthy. How do submarines not crash?
Most subs have two types of sonar: active and passive. If the ping bounces back, that means it hit an object—like a whale, a ship, or another submarine. But stealth subs often avoid active sonar, since the ping could give away their location. Instead, they use passive sonar, which merely detects sounds. How deep can submarines go?
That's classified. What the Navy can tell you is that their submarines can submerge deeper than 800 feet. But they don't go as deep as the research subs that explore the seafloor. Do submarines ever hit whales?
Both subs were damaged, but no one was harmed. In 2003, a British sub hit an Arctic iceberg during military exercises. If the ping bounces back, that means it hit an object—like a whale, a ship, or another submarine. But stealth subs often avoid active sonar, since the ping could give away their location. How are submarines so quiet?
Nuclear submarines can run even more quietly, at very low speeds only, by turning off active reactor cooling during silent running. The reactor is then only cooled by natural convection of the water. Why is radar not used underwater?
Unfortunately, Microwaves are strongly absorbed by sea water within feet of their transmission. This renders radar unusable underwater. The reason is mainly because radar has a harder time penetrating large volumes of water. Also, radar is only an active system allowing for your detection by passive sensors. Can submarines be tracked?
Today some nations have seabed listening devices capable of tracking submarines. It is possible to detect man-made marine noises across the southern Indian Ocean from South Africa to New Zealand. Some of the SOSUS arrays have been turned over to civilian use and are now used for marine research. Can submarines see underwater?
Can You See Outside When You are Underwater? No, Navy submarines don't have windows or portholes so the crew can watch undersea life. Submarines have only periscopes for outside vision, and those are only used close to the surface, a periscope depth (PD). Which country has the most submarines?
Countries With the Most Submarines - China. China has the largest fleet of submarines in the world with 18 nuclear-powered and 58 non-nuclear powered vessels.
- North Korea. North Korea is thought to be in possession of between 72 and 76 submarines.
- The United States. The United States Navy is in possession of 70 submarines.
- Russia.
What is the fastest submarine in the world?
K-222 was laid down on 28 December 1963 and commissioned on 31 December 1969, at Severodvinsk. She was assigned to the Soviet Red Banner Northern Fleet for the duration of her career. She was the world's fastest submarine, reaching a record submerged speed of 44.7 knots (82.8 km/h; 51.4 mph) on trials. Which country has the best submarine?
The Royal Navy's Astute class and the US Navy's Virginia class are some of the best attack submarines in the world. Astute vs Virginia - which is better? Credit: US Navy/GDEB. The Royal Navy's Astute class and the US Navy's Virginia class are some of the best attack submarines in the world. How thick is the glass in a submarine?
The result is that a glass sphere about four-to-six inches (10-15cm) thick should be able to withstand most of the blows of ocean exploration. How long do submarines stay deployed?
three years
What type of glass is used in submarines?
Portholes on submarines are generally made of acrylic plastic ( Poly methyl methacrylate or PMMA), the portholes can be several inches thick. The edge of the acrylic is usually conically tapered such that the external pressure forces the acrylic window against the seat. Do submarines have anchors?
Any time a submarine needs to maintain its position on the surface but doesn't happen to be near a pier or another vessel, the anchor is used. Anchors aren't needed while submarines are submerged, but subs have to resurface sometime, so anchors come in handy. They are housed in one of the aft Main Ballast Tanks. What are submarine windows made of?
Portholes on submarines are generally made of acrylic plastic. In the case of deep diving submarines, the portholes can be several inches thick. The edge of the acrylic is usually conically tapered such that the external pressure forces the acrylic window against the seat. Do submarines have escape pods?
Very few submarines have been fitted with escape pods, but if people are trapped in a sunken submarine there are other ways of getting them out safely. As a last resort, submarines also carry inflatable escape suits that people can wear to float up to the surface from an airlock. 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. How thick is a submarine hull?
Making the hull. 4 Steel plates, approximately 2-3 in (5.1-7.6 cm) thick, are obtained from steel manufacturers. These plates are cut to the proper size with acetylene torches. How do submarines get air?
Oxygen is supplied either from pressurized tanks, an oxygen generator (which can form oxygen from the electrolysis of water) or some sort of "oxygen canister" that releases oxygen by a very hot chemical reaction. The carbon dioxide is trapped in the soda lime by a chemical reaction and removed from the air. How many German U boats are still missing?
50 German U-boats
Are submarines safe from tsunami?
Submarines are relatively unaffected by weather or tsunamis when submerged in deep open waters. Once a submarine is deep enough the conditions on the surface are not felt. Large enough waves can cause a submarine to be pulled (sucked) up to the surface. This is called broaching, this is not a good thing. Can submarines be detected by satellite?
30 years ago, yes, using a RORSAT (satellite with radar), IF the submarine operated fast enough, and shallow enough to leave a wake, and the ocean was calm enough that you could detect it. Who has the best submarines in ww2?
During World War Two I feel the most innovative and capable submarines were in the IJN. (Japan) and the German Navy. The Japanese vessels had the best endurance, capabilities, and innovations Japan has long been recognized as having the best torpedoes. How long does it take a submarine to cross the Atlantic?
It's estimated that a jaunt across the Atlantic Ocean would take about an hour, while crossing the Pacific from Shanghai to San Francisco could take around 100 minutes. Do submarines have toilets?
Submarine Toilets. Just like surface ships, the toilet on board a submarine is referred to as its head out of traditional maritime custom. Compared to their surface cousins, submarines have a much more difficult time dealing with mundane operations including flushing the toilet. What does it feel like to be in a submarine?
It was actually somewhat calming. As for normal running submerged, subs handle very gently. There is no pitch or roll due to wave action. You can sort of sense a turn as the sub will roll ever so slightly, similar to but less than for an airplane. Can you enter a submarine underwater?
submarines, diving chambers, and underwater habitats to permit divers to exit and enter. torpedo tubes and escape trunks in submarines are airlocks. Can you shower on a submarine?
Submarines have to distill water they need for drinking, cooking, and bathing from seawater and have a limited supply, so the crew takes "submarine showers" - turn the water on and wet down, turn the water off and soap up. You can't ever leave the water running anywhere. How do submarines get fresh air?
Oxygen is supplied either from pressurized tanks, an oxygen generator (which can form oxygen from the electrolysis of water) or some sort of "oxygen canister" that releases oxygen by a very hot chemical reaction. The carbon dioxide is trapped in the soda lime by a chemical reaction and removed from the air. Do submarines have gyms?
Most Navy ships have large spaces—not to mention open decks—where sailors can break a sweat. Aircraft carriers have gyms, and even basketball hoops that can be rolled out. But the men and women aboard the North Dakota, or any of the other 84 subs in the U. S. Navy's fleet, lack such luxuries. What happens if someone dies in a submarine?
When someone dies on a Navy ship, including submarines, the body is placed in a body bag and stored in the coolers (we call them reefers) until the body can be delivered to a morgue. Depending on the ship's current operations, that could be anywhere from a day or two, to several weeks. Do nuclear submarines have batteries?
Submarines also need electric power to operate the equipment on board. To supply this power, submarines are equipped with diesel engines that burn fuel and/or nuclear reactors that use nuclear fission. Submarines also have batteries to supply electrical power. What does a sub tender do?
United States Navy submarine tenders are U.S. Navy vessels, common throughout World War II, stationed in remote areas of the oceans to service submarines assigned to them. Such service would include providing fuel, food, potable water, spare parts, and some repair of submarine equipment and minor hull components. 
