That was why he had been careful to keep all his acquaintances on the ship at arm's length.

After all, someone had to stay behind to keep an eye on the ship, and she nominated the cat.

They'd kept relative position on the ship while they were still in view.

"You know we're not allowed to keep weapons on the ship."

But he knew in his heart that his friend was among those who had been kept on the ship.

Two men had been assigned to keep a close guard on the ship.

"I should have kept him on the ship, I think."

Morrison found one that allowed him to keep his back on the ship.

Only his need to monitor the situation planetwide had kept him on the ship until now.

Calamai ordered his crew to keep, a close eye on the other ship.