| Central International Port |
Especially important ports of the major ports, serving as the bases of the overseas marine transport network. |
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| Major Port |
Ports serving as the bases of overseas or domestic marine transport network. |
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| Regional Port |
Ports, other than major ports, mainly committing to local interests. |
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| Port of Refuge |
Ports mainly serving as shelters for mooring small ships from storms. |
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| Base Airport |
The airport that serves as the base for the international air transportation network or the domestic air transportation network. |
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| Local Management Airport |
Airports important in forming an international air transportation network or a domestic air transportation network. |
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| Shared Airport |
Airports provided by the Self-Defense Forces and designated to be allowed to share with private airliners. |
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