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r/IBO on Reddit: What are the best resources for chemistry HL? » Posted by u/rinastudyingrn - 19 votes and 11 comments Reddit.com

H. L. Hunley Wreck (1864) » The Confederate submersible H. L. Hunley has the distinction of being the first submarine to sink an enemy warship in wartime. Although the boat and its crew were lost as a result of this endeavor, the success of their mission proved that this new style of naval warfare would be an inevitable course of future development.    The Boat Privately built in 1863 by Park and Lyons of Mobile, Alabama, with the financial backing of Horace Lawson Hunley, the submarine was constructed from rolled iron boiler plate with custom cast iron fittings. It was powered by a hand crank operated by a crew of seven, with an eighth member to pilot the boat. Each end was equipped with water ballast tanks that could be flooded by valves or pumped dry by hand pumps. With many of the features that would become standard in later submarines, including diving planes and raised conning towers, the boat is a prime example of the American technological ingenuity that characterized the Civil War period.   The Sinking On 17 February 1864, a Public2.nhhcaws.local

r/IBO on Reddit: The HL Essay: How many secondary sources are appropriate? » Posted by u/dumbodummie - 4 votes and 5 comments Reddit.com