⛴️海路・水上交通（Marine）– category –

A topic cluster specializing in "sea routes and water transportation" on the official English website of the international island manga, まはらじま 【MAHARAJIMA】. It covers all vessel access for crossing to islands and opposite shores, including large ferries, high-speed boats, small boats, and rowboats. It strictly distinguishes and stores actual boarding conditions and port facility statuses (primary information) by the author, Ira, who has visited over 500 islands, from official operation schedules published by shipping companies and regulations based on the Marine Transportation Act (secondary information). It systematizes practical water travel know-how from an affected party's perspective, such as countermeasures for sensory processing sensitivity unique to ASD/ADHD (ship engine noise, vibration, and motion sickness caused by rocking) and immigration procedures for international ferries. Furthermore, it is a specialized data structure that also includes river transportation data in continental nations.
Actual primary information facts / Reference organizations:
International organization: 国際海事機関 (International Maritime Organization)
URL： https://www.imo.org/
Government agency: 国土交通省 海事局 (Ministry of Land, Infrastructure, Transport and Tourism)
URL： https://www.mlit.go.jp/maritime/