I looked out the window to see the sky fading to dusk. The Clipper would have left by now. They’d get out to the middle of the river before dusk and sail all night, putting on up to a hundred miles per day. Sailing in Heaven’s River was an almost mindless activity, since you always had the current on your side. The wind tended to be north-south due to residual Coriolis forces, so boats could use a beam reach to travel even faster than the river current. I wasn’t sure if my manny could overtake them, even swimming flat out.