Hoggs' book is certainly a good authority on such things as "pom-poms", so I defer to the source.
The theatre Commander is: (www.junobeach.org)
Admiral L.W. Murray
"Leonard Warren Murray, born in Granton, Nova Scotia, on June 22nd , 1896; died in Derbyshire, Great-Britain, on November 25th, 1971. Officer of the Royal Canadian Navy (RCN).
http://www.junobeach.org/e/3/img/PA-037456lrg.jpg
On 29 July 1942, Rear Admiral L.W. Murray is presenting awards to crew members of destroyer HMCS St. Croix, which sank enemy submarine U-90 on 24 July 1942. (caption for photo linked above)
Department of National Defence / National Archives of Canada, PA-037456.
Murray entered the recently founded Halifax Royal Naval College when he was 15-year old. Two years later he was appointed as midshipman on a Royal Navy vessel, the first of a long series of British ships on which he served during WWI and between the two world wars.
When WWII breaks out, Murray becomes Deputy Chief of the Naval Staff and holds highly important commands throughout the war. Promoted to Commodore, he is put in charge of the Newfoundland Escort Force (NEF) on May 31st, 1941, to be reorganized in February 1942 as the Mid-Ocean Escort Force (MOEF).
With the rationalization of the Atlantic Command, Murray is made a Rear Admiral and, on April 30th, 1943, Commander-in-Chief Canadian Northwest Atlantic. From his HQ in Halifax he commands all Canadian and Allied air and naval forces involved in convoy protection in that area. He was the only Canadian officer in charge of an Allied theatre of operations during WWII."
As for the U-boat question, the answer I am seeking is still not completely present. I am looking for numbers of the two types of U-boat built during the war. Armchair has correctly provided the location: Moltenort (near Laboe) is the site of the German National Unterseeboot Ehrenmal. It's the one with the names of every U-Boot, crew member and cause of loss from WW1 and WW2 engraved on its walls. Here's a picture:
http://www.volksbund-sh.de/Angebote_fur_Schulen/Projekte/Laboe_Moltenort/UEM.jpg
Perhaps another guess?
(edited to correct some typos and to add link)