1. 
   Naval trawler
   A naval trawler is a vessel built along the lines of a fishing trawler but fitted out for naval purposes. Naval trawlers were widely used during the First and Second world wars. Fishing trawlers were particularly suited for many naval requirements because they were robust boats designed to work hea...
   Found op http://en.wikipedia.org/wiki/Naval_trawler
   
   

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