Indeed, the report was not going to be an easy one to write, for they had seen and learned very little in the course of their cruise. They had approached Cairns upon the surface but within the hull, the radiation level being too great to allow exposure on the bridge. They had threaded their way cautiously through the Barrier Reef to get to it, spending one night hove-to because Dwight judged it dangerous to navigate in darkness in such waters, where the lighthouses and leading lights were unreliable. When finally they picked up Green Island and approached the land, the town looked absolutely normal to them. It stood bathed in sunshine on the shore, with the mountain range of the Atherton tableland behind. Through the periscope they could see streets of shops shaded with palm trees, a hospital, and trim villas of one storey raised on posts above the ground; there were cars parked in the streets and one or two flags flying. They went on up the river to the docks. Here there was little to be seen except a few fishing boats at anchor up the river, completely normal; there were no ships at the wharves. The cranes were trimmed fore and aft along the wharves and properly secured. Although they were close in to shore, they could see little here, for the periscope reached barely higher than the wharf decking and the warehouses then blocked the view. All that they could see was a silent waterfront, exactly as it would have looked upon a Sunday or a holiday, though then there would have been activity among the smaller craft. A large black dog appeared and barked at them from a wharf.
They had stayed in the river off the wharves for a couple of hours, hailing through the loud hailer at its maximum volume in tones that must have sounded all over the town. Nothing happened, for the whole town was asleep.
They turned the ship around, and went out a little way till they could see the Strand Hotel and part of the shopping centre again. They stayed there for a time, still calling and still getting no response. Then they gave up, and headed out to sea again to get clear of the Barrier Reef before the darkness fell. Apart from the radioactive information gathered by John Osborne, they had learned nothing, unless it was the purely negative information that Cairns looked exactly as it always had before. The sun shone in the streets, the flame trees brightened the far hills, the deep verandahs shaded the shop windows of the town. A pleasant little place to live in in the tropics, though nobody lived there except, apparently, one dog.
Port Moresby had been the same. From the sea they could see nothing the matter with the town viewed through the periscope. A merchant ship registered in Liverpool lay at anchor in the roads, a Jacob's ladder up her side. Two more ships lay on the beach, probably having dragged their anchors in some storm. They stayed there for some hours, cruising the roads and going in to the dock, calling through the loud hailer. There was no response, but there seemed to be nothing the matter with the town. They left after a time, for there was nothing there to stay for.
Two days later they reached Port Darwin and lay in the harbour beneath the town. Here they could see nothing but the wharf, the roof of Government House, and a bit of the Darwin Hotel. Fishing boats lay at anchor and they cruised around these, hailing, and examining them through the periscope. They learned nothing, save for the inference that when the end had come the people had died tidily. "It's what animals do," John Osborne said. "Creep away into holes to die. They're probably all in bed."
"That's enough about that," the captain said.
"It's true," the scientist remarked.
"Okay, it's true. Now let's not talk about it any more."
The report certainly was going to be a difficult one to write.
They had left Port Darwin as they had left Cairns and Port Moresby; they had gone back through the Torres Strait and headed southward down the Queensland coast, submerged. By that time the strain of the cruise was telling on them; they talked little among themselves till they surfaced three days after leaving Darwin. Refreshed by a spell on deck, they now had time to think about what story they could tell about their cruise when they got back to Melbourne.
They talked of it after lunch, smoking at the wardroom table. "It's what Swordfish found, of course," Dwight said. "She saw practically nothing either in the States or in Europe."
Peter reached out for the well-thumbed report that lay behind him on the cupboard top. He leafed it through again, though it had been his constant reading on the cruise. "I never thought of that," he said slowly. "I missed that angle on it, but now that you mention it, it's true. There's practically nothing here about conditions on shore."
"They couldn't look on shore, any more than we could," the captain said. "Nobody will ever really know what a hot place looks like. And that goes for the whole of the Northern Hemisphere."