Nadder was powered by two Admiralty 3-drum type boilers providing a top speed of 20 knots and carried a complement of 118.

Carrying coconut oil, tea and copra for the Ministry of Food, Troilus was homeward bound from Colombo.

She was sailing independently via Suez but was torpedoed and sunk by U-859 300 miles north east of Socotra Island on 1 September 1944.

Temporary Acting Lieutenant-Commander Kitto is mentioned in despatches along with Engine Room Artificer Third Class Quintrell and Petty Officer Eustis "for bravery, skill and determination whilst serving in Nadder, in successfully beating off an enemy air attack on 10 August 1945, whilst engaged in a special operation many hundreds of miles from any supporting force".

[5] Shamsher was underway at sea during the mutiny, however, her commanding officer, Lt. Nilakanta Krishnan, submitted testimony to the Commission of Inquiry stating that the fact that the ship's officers were primarily of Indian origin, unlike many ships of the RIN, may also have been a reason for the ratings not joining the mutiny.