Commando Comic #579: 'Crash Dive' (1971)
 
In 1943 there wasn't a single matelot in the Royal Navy who hadn't heard of HM Submarine Dauntless. She'd sent more Japanese ships on the downward trip to Davy Jones' locker than any other vessel in the Pacific.
 
Skipper of the Dauntless was the legendary "Mauler" Mathieson - tough as the plates of steel that welded his sub together, and surly as a wounded bear.
 
So when young Harry Barton was posted to the Dauntless, he reckoned he was just about the luckiest lieutenant in the Navy. But that was before he found out there could only be one officer aboard the Dauntless..."Mauler" Mathieson himself!