The Deep Range - Arthur C. Clarke [93]
As the sub drew closer, he was not so sure. The derrick was over two hundred feet long, and it would be a slow business nibbling it away in sections that the little scout-subs could handle.
For the next ten minutes there was a three-cornered conference between Franklin, Captain Jacobsen, and Chief Warden Barlow, skipper of the second scout-sub. At the end of that time they had agreed that the best plan was to continue to cut away the derrick; even taking the most pessimistic view, they should be able to finish the job at least two days before the Hercules could arrive. Unless, of course, there were any unexpected snags; the only possible danger seemed to be the one that Captain Jacobsen had mentioned. Like all large undersea vessels, his ship carried an air-purifying plant which would keep the atmosphere breathable for weeks, but if the hull failed in the region of the control room all the sub’s essential services would be disrupted. The occupants might retreat behind the pressure bulkheads, but that would give them only a temporary reprieve, because the air would start to become foul immediately. Moreover, with part of the sub flooded, it would be extremely difficult even for the Hercules to lift her.
Before he joined Barlow in the attack on the derrick, Franklin called Base on the long-range transmitter and ordered all the additional equipment that might conceivably be needed. He asked for two more subs to be flown out at once, and started the workshops mass producing buoyancy tanks by the simple process of screwing air couplings on to old oil drums. If enough of these could be hitched to the derrick, it might be lifted without any help from the submarine salvage vessel.
There was one other piece of equipment which he hesitated for some time before ordering. Then he muttered to himself: “Better get too much than too little,” and sent off the requisition, even though he knew that the Stores Department would probably think him crazy.
The work of cutting through the girders of the smashed derrick was tedious, but not difficult. The two subs worked together, one burning through the steel while the other pulled away the detached section as soon as it came loose. Soon Franklin became completely unconscious of time; all that existed was the short length of metal which he was dealing with at that particular moment. Messages and instructions continually came and went, but another part of his mind dealt with them. Hands and brain were functioning as two separate entities.
The water, which had been completely turbid when they arrived, was now clearing rapidly. The roaring geyser of gas that was bursting from the sea bed barely a hundred yards away must have sucked in fresh water to sweep away the mud it had originally disturbed. Whatever the explanation, it made the task of salvage very much simpler, since the subs’ external eyes could function again.
Franklin was almost taken aback when the reinforcements arrived. It seemed impossible that he had been here for more than six hours; he felt neither tired nor hungry. The two subs brought with them, like a long procession of tin cans, the first batch of the buoyancy tanks he had ordered.
Now the plan of campaign was altered. One by one the oil drums were clipped to the derrick, air hoses were coupled to them, and the water inside them was blown out until they strained upward like captive balloons. Each had a lifting power of two or three tons; by the time a hundred had been attached, Franklin calculated, the trapped sub might be able to escape without any further help.
The remote handling equipment on the outside of the scoutsub, so seldom used in normal operations, now seemed an extension of his own arms. It had been at least four years since he had manipulated the ingenious metal fingers that enabled a man to work in places where his unprotected body could never go—and he remembered, from ten years earlier still, the first time he had attempted to tie a knot and the hopeless tangle he had made of it. That was one of the