日本是一个群岛国家,海岸线总长33,000公里。水深小于50米的浅海面积8万平方公里。离海岸线200海里以内的海域面积达420万平方公里。港口1085个,其中特别重要港口18个,重要港口111个,地方港口956个。日本港口的发展是随经济形势而变化的,由于日本的经济是建立在进口资 Japan is an archipelagic country with a total coastline of 33,000 kilometers. Water depth of less than 50 meters shallow sea area of ​​80,000 square kilometers. The sea area within 200 nautical miles from the coastline covers an area of ​​4.2 million square kilometers. There are 1,085 ports, of which 18 are of special importance, 111 are major ports and 956 are local ports. The development of Japan’s ports is changing with the economic situation. Since Japan’s economy is based on imported materials