You won't believe what submarines are capable of doing! Most people know so little about them. Here are 10 interesting facts about submarines! SUBSCRIBE for the latest videos: https://goo.gl/7xzjzR Don't forget to CHECK OUT our latest upload: https://goo.gl/LUB8Xw World’s first military submarine attack The first known military submarine was built in 1775, named ‘Turtle’. It was built and designed by American inventor David Bushnell for use against British warships. It held one person and was controlled underwater independently. During the Revolutionary War, Turtle attempted to attach a time bomb to the hull of British Admiral Richard Howe’s flagship HMS "Eagle", in New York Harbor, but the mission was unsuccessful. How long can a submarine stay underwater? There are small submarines that can be under water for a couple of hours. But there are huge submarines as well. One of the biggest submarines, ever made is a Russian Typhoon-class. They can stay under water for up to 6 months! HMS Artful of the British Royal Navy can stay underwater for up to 25 years without surfacing – its nuclear reactor only needs to be serviced once per quarter-century Submarines are the USA's most economy friendly weapon Comprising only 1.6 percent of the Navy's World War 2 personnel, the submarine service accounted for 55 percent of all enemy shipping destroyed, while the average cost of a U.S. submarine was only about $3 each at the time. How deep can you go in a submarine? The latest open literature says that a US Los Angeles-class test depth is 450m (1,500 ft), suggesting a maximum depth of 675–900m (2,250–3,000 ft). “Project 705 Lyra class Alfa” is known to have gone to 1,000m (3,300 ft), suggesting a maximum depth of 1,500–2,000m (5,000–6,600 ft). Later classes (such as Project 945B Kondor — Sierra II) can probably go at least that deep. A specially designed submersible, the US Navy’s Trieste, in 1960 went to the bottom of the deepest place on Earth, the Challenger Deep of the Mariana Trench, at 11,000m (36,000 ft or 6.8 miles). Since that is the deepest point on Earth, there is no maximum (crush) depth. How Much Food Does a Submarine Carry Modern American submarines, feed crews three meals a day for the length of the submarine patrol, which could last weeks or even months without resupply. On fast attack subs, the food is lowered into the submarine at port by hand, one box of groceries at a time. On ballistic missile submarines, food is lowered through the escape trunk opening by crane in aluminum modules measuring 6x5 feet. 18-hour schedule The hardest thing about living in submarines might be adjusting to the three, six-hour segment routines the crew has to endure. Crew members get six hours for sleeping, six hours on watch, and six hours for free time. This kind of segmented schedule takes some adjusting to get used to. World's fastest submarine Soviet submarine K-162 was the world's fastest submarine, being the first submarine constructed with a titanium hull. The vessel set a record submerged speed of 44.7 or about 52 mph. Her unofficial maximum speed is unknown. How often do submarine crash? It has been documented that there are 2 or 3 submarine related accidents per year. The most recent one was ARA San Juan in 2017. The vessel was a TR-1700-class diesel-electric, in service with the Argentine Navy. The submarine was built in West Germany and entered service on the 19th November in 1985. San Juan underwent a mid-life update from 2008 to 2013. The most luxurious submarine Migaloo is the first submarine-superyacht hybrid. Designed by Motion Code Blue, it is 115 meters long. One can find a swimming pool, cinema room, helipad, library, gym, laundry room, and, luxurious private lounges on it. Named after the Albino whale, Migaloo can go to a maximum depth of 240m. The best attack submarine in the world The boats of the Seawolf class are the most advanced but also the most expensive hunter-killer submarines in the world. These submarines have eight 660 mm torpedo tubes. These tubes are used to launched Mk.48 torpedoes and Sub-Harpoon anti-ship missiles. Torpedo tubes are also used to launch Tomahawk land attack cruise missiles with a range of 1 700 km. A mix of 50 torpedoes, Sub Harpoons and Tomahawks can be carried.