since the power requirement for trawling is higher. Naval trawlers During both World Wars some countries created small warships by converting and arming existing trawlers or building new vessels to standard trawler designs. They were typically armed with a small naval gun and sometimes depth charges, and were used for patrolling, escorting other vessels and minesweeping. Safety Occupational safety is a concern on fishing trawlers. For example, a United States cooperative which operates a fleet of 24 bottom trawlers in Alaskan water reported 25 fatalities over the period 2001–2012. The risk of a fatal injury was 41 times higher than the average for workers in the United States. See also Drifter (fishing boat) Fishing Tug Katherine V Net cutter (fisheries patrol) Recreational trawler Trolling (fishing) References External links WorldFishingToday – Fishing vessels photos and data Vigilance – A Brixham Trawler Budding Rose – A Scottish Trawler European Union Fishing Directorate Pictures showing damage done by bottom trawlers Trawler History Trawler Pictures – A Forum and Gallery Dedicated to Commercial Trawlers Trawlers from the east coast of the UK Nautical terminology