HMS Tiptoe ( P332 ) HMS " Tiptoe " ( pennant number P332 ) was a British submarine of the third group of the T class . She was built by Vickers Armstrong , Barrow , and launched on 25 February 1944 . She was one of two submarines named by Winston Churchill , and so far has been the only ship of the Royal Navy to be named " Tiptoe " . In 1955 she was involved in a collision in with a coastal streamer whilst in Tromsø harbour . She was involved in escape trials off Malta in 1962 , and the commanding officer was reprimanded in 1964 following an incident in the Firth of Clyde where she was run aground , and again in 1965 when she collided with HMS " Yarmouth " . Although originally named for the ability to sneak up on someone undetected , she maintained several links with ballet , including the Royal Ballet and ballet dancer Moira Shearer . She was scrapped in Portsmouth in 1975 , while her anchor is on display in Blyth , Northumberland . Design and description . HMS " Tiptoe " was one of the group three of T - class submarines . She was named by Winston Churchill , with the intention to imply that it could approach the enemy silently as if on tiptoe , although the Royal Navy naming committee was against the name , stating that " it was derogatory to one of His Majesty ' s ships " , but the Prime Minister had his way . The only other Royal Navy vessel to be named by Churchill was HMS " Varangian " . She was part of the second batch of the third group to be ordered , in 1941 . She was one of a number of boats which had an all - welded hull which increased diving depth to , an increase of . The torpedo armament was the same as the earlier group two , although by the time group three was coming into service it was realised that external torpedo tubes had major problems and affected the streamlining of the boats ; the external tubes were abandoned in the following " Amphion " - class submarines . Because of expected use in tropical climates , boats of group three were equipped with freon blowers in order to deal with the increased temperatures . She was built by Vickers Armstrong and was laid down at their shipyard at Barrow on 10 November 1942 whilst still known as P332 . Following her launch on 25 February 1944 , she departed the builders yard on 10 June 1944 , arriving at Holy Loch on the following day , where she was commissioned on 12 June . Service . Second World War . After completing training on 10 September , she returned to Barrow in order to correct some defects . Between 5 October and 12 January 1945 , she was equipped with new radar equipment and other equipment to prepare her for deployment in the Far East . She arrived in Trincomalee , Sri Lanka on 1 March 1945 prior to her first war patrol . En route from Britain , she had stopped at Gibraltar , Malta , Port Said and Ismailia in Egypt and Aden , Yemen . Her first patrol centred around the west coast of Burma and the Andaman Islands before heading onto Fremantle , Australia , and was uneventful . She departed Australia for her second patrol on 6 May with orders to patrol the Flores Sea . On 15 May , she sank a Japanese coaster of around 100 tons with gunfire near Dompo Bay , Sumbawa . The following day she sank another Japanese coaster with gunfire , this time around 200 tons , in Sepeh harbour . On 1 June , she approached and sank the Japanese merchant cargo ship " Tobi Maru " near Matasiri , one of the Laut Kecil Islands . " Tiptoe " was damaged during the attack as the cargo ship was about to rendezvous with an escort . The escort launched thirteen depth charge s , putting all of " Tiptoe " ' s torpedo tubes out of action and flooded her sonar equipment . She returned to Fremantle on 17 June , and remained there undergoing repairs until 16 July when she left on her third patrol in the Sunda Strait along with her sister HMS " Trump " . On 31 July she attacked two small Japanese vessels , but broke off the attack when an aircraft was sighted . On 2 August , " Tiptoe " and " Trump " together destroyed two small vessels totalling 600 tons with gunfire . On 3 August , she carried out a torpedo attack against the Japanese army cargo vessel " Tencho Maru " whilst it was in a convoy defended by a patrol boat . The final action of " Tiptoe " ' s last war patrol was on 9 August , when together with " Trump " , they destroyed an 800 ton coastal tanker in the northern part of the Sunda Strait . She returned to Fremantle on 21 August 1945 . Post war . During the royal inspection of the home fleet in 1947 by George VI , " Tiptoe " demonstrated diving and surfacing , along with the firing of her deck gun . In November of the same year , she was part of a group of seven submarines with destroyer HMS " Opportune " to take part in anti – submarine training over the course of two weeks . " Tiptoe " was one of several all - welded T - class submarines rebuilt for greater underwater performance . Extra batteries were installed below the control room and additional electric motors were accommodated by cutting through the pressure hull and adding in a new hull section inserted aft of the control room . The diesel engines were modified and supercharged with output increased by 300 BHP . The gun armaments and external torpedo tubes were removed , and the bow reshaped . The submarine was used in filming the 1950 film , " Morning Departure " , a naval film directed by Roy Ward Baker . During the course of filming , the submarine depot ship HMS " Maidstone " was used as a mother ship for " Tiptoe " . In 1952 a further cinematic link was made when ballet dancer Moira Shearer presented a pair of size 3 . 5 satin ballet shoes to " Tiptoe " that she had worn in the 1948 film " The Red Shoes " . These are now at the Royal Navy Submarine Museum . Whilst in Tromsø harbour on 18 July 1955 " Tiptoe " was damaged when a coastal steamer collided with her . The steamer , a 2 , 162 tonne vessel called " Nordlys " , was entering the harbour when she collided with the British destroyer HMS " Chevron " . The steamer bounced off the destroyer and collided with " Tiptoe " , snapping her moorings as she was pushed halfway under a wooden quay . She took part in escape trials in 1962 , which were a series of trials conducted off Malta into escape from a submarine at extreme depths . Tests were conducted with men escaping from " Tiptoe " at depth of up to with ascent rates of up to 2 m / s . The trials included the use of buoyant ascent suits which involved a suit pulled over the sailor ' s head which fed them air as they ascended to the surface . For their work in the escape trials , Chief Petty Officer Christopher Crossman was awarded a commendation , and Lieutenant – Commander L . Hamlyn was awarded an OBE . Following a refit in Portsmouth , " Tiptoe " went to the Firth of Clyde for working up , arriving on 10 January 1964 , when she was ordered not to enter Gareloch due to dense fog . The boat was duly turned around and ran aground on a muddy bank . As the fog cleared it was realised the boat had run aground only opposite that of the house of the Royal Navy ' s Captain in Charge for the Clyde area , Captain G . D . Pound . Divers were sent out to assess damage , and after finding none , " Tiptoe " was refloated on the evening tide and pulled off the shore by two tugboats . The commanding officer at the time was Lieutenant – Commander David Brazier , who was in his first command . He was later ordered to be severely reprimanded for negligence at a court - martial where he pleaded guilty to the charge . His defence statement read , " The ship was not worked up and it was a very green company . Unfortunately he ran into fog . He took all the precautions he considered necessary . Although he had all the theoretical knowledge , he was short of that tangible instinct of which we are all aware . " " Tiptoe " was also damaged in a collision with HMS " Yarmouth " on 13 July 1965 . " Tiptoe " was at periscope depth SE of Portland Bill . Following the collision , the commanding officer , Lieutenant – Commander Charles Henry Pope was ordered to be severely reprimanded after being found guilty of four out of five counts of negligence . When she left for her final commission on 24 February 1967 , six ballet dancers from the Royal Ballet attended the departure ceremony . At the time she was already the oldest submarine in service with the Royal Navy . She attended Portsmouth Navy Days later in 1967 . By the time she was decommissioned in 1969 , " Tiptoe " was the last active T - class submarine in the Royal Navy . As she arrived at Spithead for decommissioning on 29 August 1969 , a 13 year old ballet dancer named Judy Wright danced on her upper deck . She was sold in 1971 and scrapped at Portsmouth in 1975 . Her anchor was saved , and was mounted on stone in 1979 in Blyth , Northumberland . The town was used as a training base for submarines during both World Wars .