Two photos of the deck gun on submarine chaser SC 299.
This is the standard deck gun on chasers, the Poole 3"/23 caliber deck gun. Note the crewman on the left holding a round.
When not on an ASW hunt...
Photographs of deck guns on SC 299. Collection of Ralph Edwin Long, radio electrician on SC 299, courtesy of his nephew, Robert DeBow. Thanks to Russ Lloyd for submitting the photo scan.