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boatman; ferryman
渡し場の船頭に声をかけた。
I called out to the ferryman at the crossing.
船頭が巧みに竿で船を進める。
The boatman skillfully poles the boat forward.
船頭多くして船山に登る、まさにその通りだ。
"Too many boatmen, the boat goes up a mountain" – that's exactly the case.