- A Trawler which has been requisitioned for war service, generally within its local area, with an unchanged crew and with the fitting of only basic armament (if any). Such vessels were typically used for transport and target-towing as well as patrol duties.
- http://reference.data.gov.uk/id/open-government-licence (Maritime Craft Thesaurus (Scotland))
- http://www.rcahms.gov.uk (Maritime Craft Thesaurus (Scotland))
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