History
Small-scale local fishery for shrimp and prawns has existed for centuries, and continues to form a large porportion of the world's shrimp fisheries. Trawling increased in scale with the introduction of otter boards, which use the flow of water to hold the trawling net open, and the introduction of steam-powered vessels, replacing the earlier sail-powered boats. Both of these developments took off in the 1880s, and were soon applied to shrimp fisheries, especially following the research effort of the Norwegian marine biologist Johan Hjort. Over time, the original open skiffs, 5–8 metres (16–26 ft) long, were replaced by decked boats, to which diesel engines were added, allowing the boats to reach an average of 18 m (59 ft).
Read more about this topic: Shrimp Fishery
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