Naval trawlers are vessels built along the lines of a fishing trawler but fitted out for naval purposes; they were widely used during the First and Second World Wars. Some, known in the Royal Navy as
First World War naval trawler, HMT Swansea Castle
Second World War naval trawler, HMT Lancer
A naval trawler's gun crew mans a 12-pounder (76 mm) Mk V gun on the forecastle
HMT Northern Sky pitching and rolling at slow speed along her patrol lines. Operating off Iceland, this trawler made the last attack of the Second World War on a U-boat.
The Type 139 patrol trawler was a class of vessel used as a training ship by the Federal German Navy. Both vessels in the class were originally built for the Royal Navy in 1942 as Isles-class naval tr
Naval trawler
…Tree class Type 139 In the aftermath of the First World War, the Belgian Corps de Marine purchased several British war surplus naval trawlers. They were operational during…