Sea fishing has established itself as a popular means of marine leisure activity for the whole nation, with people’s increasing earnings, achievement of marine leisure culture and increasing interests in the ocean. The number of fishing vessels users reached about 4.8 million in 2019, and constantly increasing. However rise in marine accident of fishing vessels has caused escalating anxiety about fishing vessels and distrust of safety policies. Collision and stranding were the highest in the number of occurrences and casualties among marine accidents of fishing vessels. when analyzing the sea state in the accident of fishing vessels collision and stranding, weather factors such as regional occurring fog are the acting as the cause. The sea fog’s occurring areas and routes are various depending on the elements such as the sea area and season. When the sea fog occurs, marine accidents of fishing vessels can be possible to prevent by alerting ever-changing fog information to captain of fishing vessels, which is quickly and accurately collected and analyzed.
 Safe fishing, considering sea state, will be able to carried out by establishing “Control Regulation for Satety Fishing” for fishing vessels based on maritime weather information.