SINCLAIR STAMMERS / SCIENCE PHOTO LIBRARY SINCLAIR STAMMERS / SCIENCE PHOTO LIBRARY
Fishing trawler. Sailor operating machinery on a fishing trawler from its control room. At lower left are screens which display sonar (Sound Navigation And Ranging) information. The sonar transmits pulses of sound into the water and detects any echoes reflected back from shoals of fish. At bottom left is a magnetic compass used for navigation.
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