You are safe aboard your own ship, however, which is more than many council members and generals can boast.

If any of them would be safe aboard the alien vessel, she would.

Would the creatures be safe aboard a craft built to support a completely different chemistry of life?

Any one of them could have been safe aboard the Enterprise by now, but they had chosen to stay instead.

I would have been safe aboard the ship; now my brave adventure was at an end.

We can break it to her gently once we're safe and sound aboard the ship.

"Call me again when you're safe aboard the Kestrel, love."

Two out of three they're still safe aboard Odysseus.

A moment later the frightened crewman was safe aboard the canoe.