tight ship

hang tight

To wait, without attempting to address a challenging, alarming, or dangerous situation, until a later point in time.

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.

sit tight

To wait patiently; to take no action; to remain quiet or relatively motionless.

steady the ship

To bring under control.

tight lips

Of a person, silence or reticence.

tight spot

A difficult position.