Taken from Facebook – UK Submarines group
Quote “I regret to report the death of Commander DLP (Dai) Evans at the Douglas Macmillan Hospice, Stoke on Trent, on 11th December 2012 after a long battle with cancer. He was 69 years old” Unquote
Dai served in Anchorite, Dreadnought, Osiris and Churchill before Perisher in 1974. He subsequently commanded HMS Narwhal before joining HMS Courageous as XO. After serving on CSST’s staff in Faslane, on the staff of CTF 311 at Northwood and promotion to Commander, he commanded HMS Renown (Port) and then the Commanding Officers’ Qualifying Course. Following service in the MoD/DNW and in Dolphin as Commander SM1, Dai left the navy to form his own very successful company training ‘command’ teams in the offshore, chemical and power industries.
Dai was perhaps most renowned across a wider audience whilst in post as “Teacher” when the Submarine service first opened it’s doors to the outside world through the TV series “Perisher”.
Excerpt of “Perisher” the TV Series”
Submarine Diary 
Dai was a fantastic mentor to me as a junior engineer – I am very sad that he has gone Gerry Thwaites
Very sad news. My CO on Renown (P) when we had a couple of trips to Cocoa for the Chevaline trials. ‘Taff’ Greenway
Dai evans like buckley was very handy to know…
Served with Dai on the Narwhal sad news a great skipper.