 The crew were told to say that they had hit an iceberg.This incident was disclosed when David Forghan, "Sceptre"s former weapons officer, gave a television interview which was broadcast on 19 September 1991.The Soviet submarine collided with was probably "K-211 Petropavlovsk-Kamchatsky" of the Delta III class, which on 23 May 1981 collided with an unknown submarine, identified at the time as an unknown American .