noun, noun or participle which takes 'suru'
visiting an island; trip to an island
Refers to the act of going to an island, often for a visit or short trip. Can be used as a noun or with する to mean 'to visit an island'.
夏休みに家族で渡島した。
We visited an island as a family during summer vacation.
渡島の際はフェリーを利用する。
When visiting the island, we use a ferry.