A proverb meaning that too many leaders or opinions cause confusion and lead to failure — 'too many captains will steer the ship up a mountain' (similar to 'too many cooks spoil the broth').
プロジェクトに口出しする人が増え、結局何も決まらない。まさに船頭多くして船山に登るだ。
Too many people are meddling in the project, and in the end nothing gets decided. It's exactly 'too many captains will steer the ship up a mountain.'
会議では発言者を絞らないと、船頭多くして船山に登ることになる。
If we don't limit speakers at the meeting, it will become a case of 'too many captains will steer the ship up a mountain.'