ABSTRACT : Most of the companies in the coastal areas are located in the unsheltered land and many of them are threatened by inundation caused even by a frequent tsunami. Therefore, based on these circumstances, it is necessary not only to mention saving human lives, but also to develop strategies for speedy restoration of industrial and logistic facilities as well as business continuity plan. Through the reports after meeting with companies located in the ports along the Pacific Coast in the Tohoku District, this study demonstrates the impact which Tsunami disaster in the port has on business continuity of those companies, and expected tsunami countermeasures that the government should take. In the result, it is found that the destruction of breakwaters among the tsunami damages in the port is most serious for the prompt recovery of affected company, and prompt rapid restoration of the breakwaters should be required. Furthermore, from the view point of business continuity of companies located in the oceanfront areas, we observed tsunami prevention measures in the harbor, such as objectives for tsunami prevention or performance requirements of breakwaters.

ABSTRACT: To enhance transport efficiency and usability of ship transportation is important, in order to reduce energy consumption and CO₂ emission of domestic cargo transportation on long distance route. For obtaining basic information to consider the measures for ship transportation, we surveyed ship specifications and performances on routes of ferries, RORO cargo ships and container ships on domestic long distance routes through shipping companies. We calculated statistic indicators of ships and routes, and functions to explain fuel consumption of ferry, RORO cargo ship and container ship on domestic long distance route.

ABSTRACT : In order to regenerate fishing industry and concerned local communities, integrated measures through the production to the consumption are necessary, as well as the assessment system for them. In the present study, survey on actual conditions of the trawl fishery in Ise Bay was conducted. Trawling is one of the major fisheries in Ise Bay, living field of whose target fish is significantly affected by the marine environmental conditions such as dissolved oxygen. In order to grasp the current situation of trawling fishery for Conger myriaster, investigation of fishing area and tracks of fishing boats have been carried out by using GPS and fishing records. The information about the economic management of fishermen or cooperative societies are also collected. It was found that each fishing community has different forms of fishing operation and distribution system. Based on these information, an operation simulator which simulates the production activities of fishery is developed. The developed simulator well reproduced the operation and fish catch at three major fishing ports (Wakamatsu, Aritaki, and Toyohama).

Abstract: Over the South Pacific area, many atolls are scattered. Many atolls were generated because the outer shell of foraminifera and coral stone accumulated on the fossil of coral. For this reason, beach erosion happens easily and it is apprehensive about the influence of a sea-level rise. So, in this research, we tried to analyze the situation of coastal landform quantitatively by using a valuation plan. First, we generated five elements of geographic information, that are, land cover (vicinity of shore line), land cover (around coastal line), ground elevation, green ratio around the coastal area and variation of green space, and the information on beach erosion. Next, we performed the valuation plan by multiple linear regression analysis by using these data as variables. As a conclusion, we propose the selection method of a priority region for land protection on Laura district, Majuro atoll.

ABSTRACT : As per a national government strategy to revive and grow fishery resources by improving and developing deep-sea fishery environment in the exclusive economic zone (EEZ) around Japan, Fisheries Agency of Japan ordered a project to build artificial upwelling rock-mound reefs in the 150m-deep sea, offshore of Nagasaki Prefecture. The construction was done by dumping 16,900m³ of rocks (1t/pc) from barges under severe weather and rough marine circumstances.

In this project, a series of barge navigational guide systems were used to set quickly and keep steadily a barge in the target position to dump rocks accurately to the designated position on the 150m-deep seabed even under such severe conditions. Furthermore, a series of simulation systems to determine optimal approaching directions and dumping points for the barge were also used in order to build the rock-mound reefs accurately in an expected. These technologies introduced herein are effective and contribute to the construction of artificial upwelling rock-mound reefs in the deep sea.