Naval trawlers

battle

vessel built along the lines of a fishing trawler but fitted out for naval purposes

Australian historic vessel

Vorpostenboot (plural Vorpostenboote), also referred to as VP-Boats, flakships or outpost boats, were German patrol boats which served during both World Wars. They were used around coastal areas and in coastal operations, and were tasked with – among other things – coastal patrol, ship escort, and naval combat.

Derelict boats from North Korea

Argentine fishing trawler