 However, during deployment, it was discovered that the endurance of this class is limited and the capabilities of SS/DIP 12 sonar system could not be fully exploited.There is some disagreement over the type designation of this class, some sources claim it is Type 037I, while others claim it is Type 037 Mod (for modified or modernized).Lynch Maydon

Lieutenant-Commander Stephen Lynch Conway Maydon (15 December 1913 – 2 March 1971) was a British Navy officer and politician who had a brief career in government.