INS Dakar () was a diesel–electric submarine in the Israeli Navy. The vessel, a modified World War II British T-class submarine, had previously been of the Royal Navy. She was purchased by Israel from the Government of the United Kingdom in 1965 as part of a three T-class submarine deal. Dakar and her entire 69-man crew were lost en route to Israel on 25 January 1968. Despite extensive searches over the course of three decades, its wreckage was not found until 1999, when it was located between the islands of Cyprus and Crete at a depth of approximately . The submarine's conning tower was salvaged and is on display outside the Clandestine Immigration and Naval Museum in Haifa. The exact cause of Dakars sinking remains unknown. It was one of four mysterious submarine disappearances in 1968; the others were those of the , the , and the U.S. submarine . Early career HMS Totem was built as a group 3 variant of the British T-class submarine; these were constructed during World War II at HM Dockyard Devonport. She was launched on 28 September 1943 and commissioned in early 1945. After the end of World War II, Totem, along with the other surviving group 3 boats, was equipped with submarine snorkels to allow for longer periods of operation underwater. Between 1951 and 1953, Totem was one of eight British Navy submarines to be converted to the "Super T" design, which allowed the vessel to travel at higher and quieter underwater speeds. Purchase by Israel In 1965, Totem was purchased by Israel, along with two of her T-class sister boats, and . The former Totem was commissioned into the Israeli Navy at Portsmouth, England on 10 November 1967 as INS Dakar (, ), under the command of Lieutenant-Commander Ya'acov Ra'anan. She then headed to Iceland to conduct sea and dive trials. Late in 1967, Dakar returned to Portsmouth; she left for Israel on 9 January 1968. Dakars first port call after leaving the UK was Gibraltar, on the morning of 15 January. She departed at midnight on 16 January with the intention of crossing the Mediterranean Sea on snorkel. The original schedule was for the submarine to enter her new home base at Haifa on 2 February. During her voyage, she was making excellent speed, averaging over , and Commander Ra'anan radioed Haifa to request entering port ahead of schedule. He was