[explosion] host: we are in the forward reporter -- torpedo room on the cavalla. will see a couple of torpedo tubes. two down below in the deck. two on top. originally she had six torpedo tubes. after the reconfiguration to make this vessel a hunter, they had to remove the top two tubes so they can install on the exterior of that bulkhead, more sonar equipment to make it one that is capable of -- going further distances. one of the interesting facts about submarine life is that the crew would often compete who could reload ultrapetrol faster. ba0---- reload a torpedo faster. the had black and tackle. nowadays we have hydraulics. the guy had to be pretty strong to move these torpedoes. behind me is the primary weapon used in world war ii. it is not live. the marc 14. 21 feet long and weighs 2500 pounds loaded. it has two speeds. at slow speed, it will go 36 knots for a distance of four miles. on high speed settings, she will go 51 knots for a distance of two miles. steam driven. she in this version is a contact or peter which means she has to get the enemy to drive

. >> cavalla was commissioned in 1940 four. she served in world war ii and she served gallantly.ne of her claims to fame is she actually sank a japanese carrier that was one of the aircraft carriers involved in what pearl harbor attacks. she went on to sing for other enemy vessels and in 1944 two was put in a decommissioned status of standby. the 1963 she was turned into a submarine hunter killer. the navy realize the difference submarines made in the worse they converted her into a platform -- primary mission is to look for other submarines that had particular sonar equipment and they reconfigured her. a lot of people are taken by the fact that the deck is flat. the original configuration is not what it was during the war. she had machine guns and bigger guns and that was used for making surface attacks. this boat primarily ran on the surface. issue bruce -- effusive merge the vehicle -- if use of merge the vehicle and went under war -- underwater, and well trained crew could submerge the boat in under a minute, you would only last about 45 minutes. >> they sank 1178 japanese me