According to China by fishing operations, the basic three types: Ⅰ class --- Unrestricted trade area; Ⅱ type --- Air area 120 nautical miles from shore to 200 nautical miles sea; Ⅲ class of aircraft 10 nautical miles away from the shore area --- 20 sea waters. Measure the size of fishing practice of using powered flight statistics, generally known as the
trolling motors more than 200 horsepower, 185 horsepower as small fishing boats. Required only in small vessels plying coastal waters and part of class Ⅲ Ⅱ type plying operations. Large extension of the current sea fishing vessels, the voyage is far on the host significantly improved operational safety requirements, ocean, once due to mechanical reasons, resulting in fishing accident, the persons on board which would seriously threaten the lives and property. To protect the safety of fishing vessels, fishing boats
trolling motors to enhance the operation and management is essential.
Freshwater
(4)
