PN, Captain Henderson is credited with the laying of the post war "transatlantic telephone cable PLUTO" in the link you posted. PLUTO was of course the Pipeline Under the Ocean laid from the IoW to France in support of the Allied 1944 Invasion of Normandy, et seq. I suspect that the post war telephone cable referred to was TAT1 which was laid in 1956 by the cable ship Monarch:-
http://news.bbc.co.uk/1/hi/scotland/...st/5375796.stm