The Tonelero is a British built Brazilian Oberon Class submarine of 2030 tons displacement surfaced launched in 1972. She is powered by two Admiralty Standard Range 16 VVS-ASRI diesels producing 3680 bhp and a top speed of 12 knots surfaced and 17 knots dived, and a range of 9000 miles surfaced at 12 knots. She carries a crew of 70, including six o...