Ports and Harbours Bureau

2.6 Disaster Prevention and Mitigation Measures at Ports and Harbors

2.6.1 Tsunami countermeasures in ports and harbors

■Introduction of “tenacious-structured” breakwaters
 The installation of “tenacious-structured” breakwaters will be promoted to prevent breakwater collapses when large-scale tsunamis exceeding design specifications occur, shortening arrival times and resulting in extensive damage, or situations in which calmness cannot be restored to resume cargo handling.

2.6.2 Earthquake countermeasures at ports

 Based on the latest earthquake damage estimations, the development of earthquake-resistant quays and the seismic retrofitting of harbor roads will be promoted with networks in mind to ensure emergency goods transportation and trunk logistics function in the event of a large-scale disaster.

2.6.3 Strengthening the disaster response capability of ports

■ Strengthening disaster response capabilities that integrate software and hardware
 Efforts will be made to strengthen disaster response capabilities by conducting disaster prevention drills and improving port BCP (*) in cooperation with related organizations to maintain port functions in the event of emergency disasters caused by earthquake, tsunami, storm surge, high wave, or storm.
*Port BCP: A plan prepared in advance by related parties regarding post-disaster specific response procedures so that minimum critical functions of the port can be maintained in the event of a disaster.

Population, logistics, industry, and urban functions are highly concentrated in the hinterland of the harbor coast. For this reason, the raising of coastal levees, seismic retrofitting, and automation and remote control of floodgates, etc. will be promoted in preparation for the Nankai Trough Earthquake, which is highly urgent, Tokyo Inland Earthquakes, Subduction Zones Earthquakes Around the Japan and Chishima Trenches, frequent typhoons, etc.