To rock the boat is to disturb a situation that was going along quietly. Do not rock the boat.
It is nearly always used as a warning against doing it, which tells you whose interest the phrase serves. Somebody has to rock the boat when the quiet is hiding something.
1phraserock the boatTo disturb a situation that was going along quietly.
“Nobody wanted to rock the boat six weeks before the sale.”
rock the boat is a phrase.
Practised in Idioms