It was recovered an hour ago by a river patrol.

Perhaps the bridge sentries would think that the river patrol had spotted another craft and moved to intercept.

There were also river patrols using the private craft of members.

'Those friends of yours had better be fast - we can't hang about all night if you want to avoid the river patrols.'

If you don't leave at once, you risk being spotted by the river patrols.

A river patrol was set up, using the largest Tantal ship.

Both have 24-hour river patrols and are responsive to emergencies.

He'd last been seen roaring down after a blood trail in the assault on the river patrol docks.

Thanks to the damned army and their quarantine, their river patrols.

"Yeah," said Long Tom, "but the river patrol hasn't reported a thing."