The violations of the law on fishing exploitation will affect the protection for fishery resources and environment. They are the result of impact accumulated from many elements: human, vessel, fishing methods, season, weather... This interactive relation includes many related elements. It isn't decided by one or two elements. The information -logical analysis is applied for researching elements, those impact on the level of violations of regulations on the Protection of fisheries resources in off-shore of Gulf of Tonkin. The research result is that: If the education level of fisherman is lower
their breaches will be higher
If the weather is bad, breaches will be more, especially vessels have engine power more than 200 CV
Almost level of breaches of the Protection of Fishery resources and environment in the south of Gulf of Tonkin is light level and these often are breaches of fishing vessels with engine power less than 90 CV. Based on the result of research, the fishery administrators can refer in order to bring out the methods for propaganda, education and to arrange the trips for controlling and supervising fishery activities in Gulf of Tonkin more effective.