2021 Volume 77 Issue 2 Pages I_121-I_126
This paper presents a case study of the rulemaking process for the evacuation of fishing boats in the event of a tsunami for Omoe Cooperative Association in Miyako City, Iwate Prefecture. As a result of examining and analyzing the evacuation of fishing boats during fishing work under the situation where the first wave of a tsunami has arrived in the middle of evacuation from a tsunami, small outboard motor boats were found to have a problem in staying on the sea for a long time to evacuate from the fishing sea area to the sea area to evacuate. When examining the evacuation from the fishing sea area to the safe higher ground, we do not adopt the first wave arrival time for setting the time from the earthquake occurrence until mooring to a quay becomes difficult. Instead, we adopt the shortest one out of the following three: (1) the time when fishing boats become difficult to navigate due to the flow velocity of a tsunami at the fishing port entrance after the earthquake occurrence, (2) the time when the flow velocity exceeds the berthing speed, and (3) the time when a tsunami overflows a major quay. As a consequence, it has become clear that it is important to examine the evacuation possibility of fishing boats by comparing the abovementioned time with the time to evacuate from the fishing sea area to the safe higher ground.
