noun
boat watchman; watching over a boat
Refers either to a person who guards a boat or to the act of keeping watch over a boat. The context usually makes the meaning clear.
夜の港で船守りが巡回していた。
A boat watchman was patrolling the harbor at night.
嵐の間、船守りは欠かせない。
Watching over the boat is essential during a storm.