Any closer and they’ll be grounded on the reef themselves. The sailors launch an actual rocket that carries a line between the vessels, and devote some time to rigging up a ship-to-ship transfer system. Waterhouse is afraid they’re going to put him on it. Actually he’s more resentful than afraid, because he was under the impression that he wouldn’t be put in any more danger for the rest of the war. He tries to kill time looking at the underside of the U-boat and watching the sailors. They’ve formed a sort of bucket brigade to haul books and papers up out of the wreck to the conning tower and from there down into the whaler. The conning tower has a complicated spidery look with gun barrels and periscopes and antennas sticking out all over the place.