Color by George Peterson.
The ship design is based on Kuck's Mosquito, which is a pretty nifty idea. Though it seems to me that having detachable water bags and carrying several of them would allow a single ship to launch multible water payloads without having to move the ship and drilling equipment back and forth every trip. A better design would have the engine and water detach from the drilling/melting rig, push the ice bag towards its destination, then the engine comes back and reattaches to the rig. Didn't think of that until after I got the comic drawn.