Two and a half thousand feet.

At the dim edges of the ship's lights guilty secrets flitted by with their eyes on stalks.

Gradually the topography of the distantly approaching ocean bed resolved with greater and greater clarity on the computer displays until at last a shape could be made out that was separate and distinct from its surroundings. It was like a huge lopsided cylindrical fortress which widened sharply halfway along its length to accommodate the heavy ultra-plating with which the crucial storage holds were clad, and which were supposed by its builders to have made this the most secure and impregnable spaceship ever built. Before launch the material structure of this section had been battered, rammed, blasted and subjected to every assault its builders knew it could withstand in order to demonstrate that it could withstand them.

The tense silence in the cockpit tightened perceptibly as it became clear that it was this section that had broken rather neatly in two.

"In fact it's perfectly safe," said one of the officials, "it's built so that even if the ship does break up, the storage holds cannot possibly be breached."

Three thousand, eight hundred and twenty five feet.

Four Hi-Presh-A SmartSuits moved slowly out of the open hatchway of the salvage craft and waded through the barrage of its lights towards the monstrous shape that loomed darkly out of the sea night. They moved with a sort of clumsy grace, near weightless though weighed on by a world of water.

With his right-hand head Zaphod peered up into the black immensities above him and for a moment his mind sang with a silent roar of horror. He glanced to his left and was relieved to see that his other head was busy watching the Brockian Ultra-Cricket broadcasts on the helmet vid without concern. Slightly behind him to his left walked the two officials from the Safety and Civil Reassurance Administration, slightly in front of him to his right walked the empty suit, carrying their implements and testing the way for them.

They passed the huge rift in the broken backed Starship Billion Year Bunker, and played their flashlights up into it. Mangled machinery loomed between torn and twisted bulkheads, two feet thick. A family of large transparent eels lived in there now and seemed to like it.

The empty suit preceded them along the length of the ship's gigantic murky hull, trying the airlocks. The third one it tested ground open uneasily. They crowded inside it and waited for several long minutes while the pump mechanisms dealt with the hideous pressure that the ocean exerted, and slowly replaced it with an equally hideous pressure of air and inert gases. At last the inner door slid open and they were admitted to a dark outer holding area of the Starship Billion Year Bunker.

Several more high security Titan-O-Hold doors had to be passed through, each of which the officials opened with a selection of quark keys. Soon they were so deep within the heavy security fields that the UltraCricket broadcasts were beginning to fade, and Zaphod had to switch to one of the rock video stations, since there was nowhere that they were not able to reach.

A final doorway slid open, and they emerged into a large sepulchral space. Zaphod played his flashlight against the opposite wall and it fell full on a wild-eyed screaming face.

Zaphod screamed a diminished fifth himself, dropped his light and sat heavily on the floor, or rather on a body which had been lying there undisturbed for around six months and which reacted to being sat on by exploding with great violence. Zaphod wondered what to do about all this, and after a brief but hectic internal debate decided that passing out would be the very thing.

He came to a few minutes later and pretended not to know who he was, where he was or how he had got there, but was not able to convince anybody. He then pretended that his memory suddenly returned with a rush and that the shock caused him to pass out again, but he was helped unwillingly to his feet by the empty suit - which he was beginning to take a serious dislike to - and forced to come to terms with his surroundings.

They were dimly and fitfully lit and unpleasant in a number of respects, the most obvious of which was the colourful arrangement of parts of the ship's late lamented Navigation Officer over the floor, walls and ceiling, and especially over the lower half of his, Zaphod's, suit. The effect of this was so astoundingly nasty that we shall not be referring to again at any point in this narrative - other than to record briefly the fact that it caused Zaphod to throw up inside his suit, which he therefore removed and swapped, after suitable headgear modifications, with the empty one. Unfortunately the stench of the fetid air in the ship, followed by the sight of his own suit walking around casually draped in rotting intestines was enough to make him throw up in the other suit as well, which was a problem that he and the suit would simply have to live with.

There. All done. No more nastiness.

At least, no more of that particular nastiness.

The owner of the screaming face had calmed down very slightly now and was bubbling away incoherently in a large tank of yellow liquid - an emergency suspension tank.

"It was crazy," he babbled, "crazy! I told him we could always try the lobster on the way back, but he was crazy. Obsessed! Do you ever get like that about lobster? Because I don't. Seems to me it's all rubbery and fiddly to eat, and not that much taste, well I mean is there? I infinitely prefer scallops, and said so. Oh Zarquon, I said so!"

Zaphod stared at this extraordinary apparition, flailing in its tank. The man was attached to all kinds of life-support tubes, and his voice was bubbling out of speakers that echoed insanely round the ship, returning as haunting echoes from deep and distant corridors.

"That was where I went wrong" the madman yelled, "I actually said that I preferred scallops and he said it was because I hadn't had real lobster like they did where his ancestors came from, which was here, and he'd prove it. He said it was no problem, he said the lobster here was worth a whole journey, let alone the small diversion it would take to get here, and he swore he could handle the ship in the atmosphere, but it was madness, madness!" he screamed, and paused with his eyes rolling, as if the word had rung some kind of bell in his mind, "The ship went right out of control! I couldn't believe what we were doing and just to prove a point about lobster which is really so overrated as a food, I'm sorry to go on about lobsters so much, I'll try and stop in a minute, but they've been on my mind so much for the months I've been in this tank, can you imagine what it's like to be stuck in a ship with the same guys for months eating junk food when all one guy will talk about is lobster and then spend six months floating by yourself in a tank thinking about it. I promise I will try and shut up about the lobsters, I really will. Lobsters, lobsters, lobsters - enough! I think I'm the only survivor. I'm the only one who managed to get to an emergency tank before we went down. I sent out the Mayday and then we hit. It's a disaster isn't it? A total disaster, and all because the guy liked lobsters. How much sense am I making? It's really hard for me to tell." He gazed at them beseechingly, and his mind seemed to sway slowly back down to earth like a falling leaf . He blinked and looked at them oddly like a monkey peering at a strange fish. He scrabbled curiously with his wrinkled up fingers at the glass side of the tank. Tiny, thick yellow bubbles loosed themselves from his mouth and nose, caught briefly in his swab of hair and strayed on upwards.

"Oh Zarquon, oh heavens," he mumbled pathetically to himself, "I've been found. I've been rescued..."

"Well," said one of the officials, briskly, "you've been found at least." He strode over to the main computer bank in the middle of the chamber and started checking quickly through the ship's main monitor circuits for damage reports.