steady the ship

one's ship comes in

One makes or comes into possession of a significant amount of money.

shape up or ship out

To either improve one's behavior or else be required to leave; to either improve one's performance in an activity or else withdraw from that activity completely.

sinking ship

Something which is doomed; an impending debacle; an ongoing disaster.

steady hand on the tiller

Reliable, composed control (of an organization or situation).

tight ship

A well-organized and highly disciplined organization.

two lamps burning and no ship at sea

Said of an unwisely or overly extravagant person.