Returning to comic strips...
Ron Carpenter, The Coffin Sub (Published in Action (UK Comic Book)), 1976
United Kingdom
HMS Conquest
T-Class Submarine
Details as per the real ships.
Note: This class identification is based on the artwork. Name does not fit the class.
HMS Defiant
'Battleship', class not specified
No other details provided.
Italy
Intrepido
'Destroyer', class not specified
Main battery: 6 x 4.7inch guns (Twin turrets. Turret layout is A, B & X)
Other Armament: Depth charges, other armament not specified.
No other details provided, other than the ship has two funnels.
Note: The comic strips artist appears to have based this ship and several other Italian destroyers that appear in the comic strip off either a British or American design. The main battery is based off what the Italians actually fitted their WWII era destroyers with.
Germany
U-75
U-Boat, type not specified (Probably a Type VII)
Note: The pennant clashes with a Type VIIB that was sunk in the Mediterranean by HMS Kipling in 1941.. In the comic strip, this submarine is sunk by HMS Conquest in an underwater duel somewhere between 1941 and 1943.
Plot summary: A submarine sunk in 1941 is salvaged and placed under the command of the only surviving member of her crew. Driven by his loss the captain takes dangerous risks in his quest for vengeance.