HMS Mullet (T311): One of Only Ten Fish-Class Trawlers Built for the Royal Navy

Adapted From a Fishing Boat

HMS Mullet belonged to the Fish-class of Royal Navy anti-submarine trawlers, a genuinely small class of just ten vessels ordered in 1940 from Cochrane and Sons of Selby, adapted from the design of a commercial trawler, the 1929-built Gulfoss, in much the same spirit as the many other requisitioned and purpose-built fishing vessels the Royal Navy pressed into wartime service. Ships of her type were intended for minesweeping and anti-submarine warfare, fitted with a 12-pounder gun, three Oerlikon 20mm anti-aircraft guns and around 40 depth charges, more than capable of dealing with the coastal threats they were most likely to encounter.

A Small Class, A Quiet Record

HMS Mullet's individual wartime record is not well documented in the sources currently available, a situation shared by many of her sister ships within such a small class; even within the Fish-class itself, two vessels, originally named Mackerel and Turbot, were later repurposed as controlled minelayers and renamed Corncrake and Redshank, an indication of just how flexibly the Admiralty was willing to redeploy these small, useful hulls as wartime needs shifted. All ten Fish-class trawlers saw active service, and two were lost to enemy action or accident during the war, underlining that even the smallest and least celebrated vessels in the fleet carried real risk for the men who crewed them.

An Honest Gap in the Record

HMS Mullet's specific service history, including her precise deployments, actions and eventual fate, is not covered in detail by the sources readily available for this article, and rather than invent detail where none can be confirmed, it is worth being straightforward about that gap. What can be said with confidence is that she formed part of a genuinely essential, if largely unsung, wartime effort: the fleet of small trawlers and auxiliary vessels that swept mines, hunted submarines and patrolled British coastal waters throughout the Second World War, doing unglamorous but vital work that rarely made it into the history books in the way that battleships and destroyers so often did.