when ship comes in
when (one's) ship comes in
When one becomes wealthy and/or successful. When my ship comes home, I'm moving out of this disgusting little apartment first thing!
when one's ship comes in
Fig. when one becomes rich and successful. When my ship comes in, we'll live in one of these huge mansions on the hill, my lass. When your ship comes in, Otto, I'll probably die of amazement!