Black wind
short-lived, however, when Dirk woke her three hours later and they prepared for another dive. With a fresh set of batteries the Starfish was released again and they made their slow descent to the submarine. The submersible hovered off the side of the hangar facing the blast hole, then slowly moved sideways toward the conning tower. At six-foot intervals, measured by the width between the two semi-extended mechanical arms, Dirk would push the submersible forward and scratch a measuring mark on the encrusted surface with the left claw. At the tenth interval, or sixty feet from the torpedo gash, he scratched a rough A on the side of the hangar.
“This is where we cut,” he said to Summer. “Let’s see if we can find the seams.”
Dragging one of the claws along the surface of the hangar, Dirk thrust the submersible sideways, leaving a long scratch along the wall. Moving back and closely examining the scarred section, which bled a dirty rust and gold, they quickly found an exposed vertical crease, representing the seam where two plates of the watertight hangar were welded together. As expected, another vertical seam was found ten feet away. While the Starfish hovered, Summer scraped away at the seams, using the claw like a knife, exposing the weld lines. When she was finished, a square outline in the shape of a garage door had been etched on the hangar.
“So much for the easy part,” Dirk said. “You ready to cut?” “Pop these on and let’s get started,” Summer replied, handing him a pair of welder’s protective glasses while donning a pair herself. Taking control of both mechanical arms, she reached into a basket mounted on the front skid pad and with the right claw retrieved an electrode holder, connected via a reinforced line to a 230-amp DC power source inside the submersible. With the left claw, she attached an iron oxide non exothermic cutting rod into the electrode holder and flicked on the power. Unlike a typical underwater cutting rod, which required a supply of oxygen to fuel the burn, the iron oxide rods simply required a power source to generate a superheated cutting arc. The less complicated design was more practical for welding at remote underwater depths. The electrical surge popped through to the end of
the rod, igniting a brilliant arc of yellow light that flared from the tip, burning at several thousand degrees.
“Let’s start at the top right corner and work down,” Summer directed. Dirk maneuvered the submersible to the corner seam and held it stationary while Summer extended the right mechanical arm toward the hangar wall until the high-temperature flame flared against the surface. With the Starfish suspended against a light current, Summer applied the heat from the arc to cut through the sixty-year-old plating weld. Progress was measured in inches, as the swaying of the submersible undermined the cutting efficiency. But, gradually, a surgical line appeared on the hangar wall, which lengthened as Dirk slid the Starfish down the seam. After fifteen minutes, the electrode rod burned down to the stub. Summer shut off the electrical power and replaced the electrode, then powered it up again and continued cutting. The tedious process continued until a fine cut was made around the entire perimeter seam of the hangar wall. With just a few inches to go, Summer worked the free mechanical claw into an open gap and grabbed onto the panel. She then cut the last of the seam, then yanked with the secured claw. The cut section broke free and fell back onto the main deck of the submarine with a swirling cloud of sediment.
Dirk backed the Starfish away and waited for the water to clear before moving up to their newly created entryway. As he maneuvered back in, he could see that they had measured perfectly. The pair of aircraft pontoons sat directly in front of the opening, the wooden crates sitting just below. He crept the submersible in as close as he could get, bumping the hangar ceiling a time or two before setting it down on the deck near a large protruding iron loop. Through the circular eyelet ran several cables, which secured the nearest pontoon to the deck while the submarine was in motion.
“Let’s torch those cables, then figure out a way to slide that pontoon out of the way,” he suggested.
Summer reignited the underwater torch and quickly cut through the first of three steel-braided cables. The corroded lines disintegrated
quickly under the flame of the cutting rod and she
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