Sam unclipped the flashlight from his belt and shined it in the water, illuminating the sub’s hull. “I’m talking about that.”
“Explain, Fargo.”
“I’ll check to be sure, but chances are we can’t go out the way we came, and no one knows exactly where we are, so we shouldn’t count on rescue. That leaves one option: down the river.”
“Oh, you mean down the river that killed one of Kholkov’s men and sucked him into limbo? That river?”
“It goes somewhere. That tunnel is a good fifteen feet in diameter and the water’s moving fast and steady. If it narrowed anywhere down the line we’d see backflow or signs of a higher tide line on the walls. Believe me, it dumps out somewhere—either aboveground in a lake or pond, or into another sea cave.”
“And you’re sure about this?”
“Reasonably.”
“There’s a subjective judgment if I’ve ever heard one.” Remi chewed her lip for a moment. “What about this: You work your engineering magic with one of the tanks and blow a hole in the ceiling crack.”
“Not enough power, and we might bring the whole roof down on us.”
“True. Okay, we can wait for daylight then set the root tangle on fire. It’ll be a smoke signal—” She caught herself and frowned. “Scratch that. We’d asphyxiate long before help arrived.”
“You’ve done as much cave diving as I have,” Sam said. “You know the geology. That river’s our best chance. Our only chance.”
“Okay. One problem, though: Our escape pod is full of water and sitting fifteen feet below the surface.”
Sam nodded. “Yes, that’s a problem.”
After checking to make sure the main cavern was in fact sealed, they returned to the secondary cave and got to work, first retrieving their gear from the bottom, then scrounging through the Kriegsmarine crates for any odds and ends that might be of use. In addition to a well-stocked toolbox of mostly rusted tools t
hey found four lanterns and a dozen stubby votivelike candles that lit at the first touch from Sam’s lighter. Soon the pier and surrounding water was dimly lit by flickering yellow light. While Remi sorted through their remaining gear and conducted an inventory of the toolbox, Sam stood at the edge of the pier, staring distantly into the water.
“Okay,” Remi said. “We’ve got two air tanks, one two-thirds full, a second completely full; two flashlights, both working, charge unknown; my camera’s shot but the binoculars are fine; the revolver is dry, but I can’t vouch for the bullets; two canteens of water and some slightly soggy beef jerky; a first-aid kit; your Gerber Nautilus multitool; one dry bag that’s in good shape, one that’s Swiss cheese; and, finally, two cell phones that are dry, working, almost fully charged, but useless inside here.”
“The motor?”
“I dried it out as best I could but we won’t know until we try it. As for the gas tank, I didn’t find any holes and all the valves are sealed, so I think it’s fine.”
Sam nodded and went back to staring at the water.
After ten minutes of this, he cleared his throat and said, “Okay, we can do it.” He walked over and sat down beside Remi.
“Let’s hear it,” she said.
He started explaining. When he was done, Remi pursed her lips, tilted her head, and then nodded. “Where do we start?”
It started with a tense, claustrophobic crawl for Sam. He had no trouble with either confined spaces or water, but had no love for the two combined.
Wearing only his mask and a dive belt, he first did a series of practice dives to expand his lung capacity, then spent a full minute on the surface doing deep-breathing exercises to oxygenate his blood to its maximum.
He took a final breath, then dove to the bottom. Flashlight extended before him, he wriggled through the sub’s dome hatch and turned aft. He knew from his cursory study of Kriegsmarine subs back in the Pocomoke, the nose section of a Marder-class boat held only a seat and some rudimentary steerage and diving controls. What he was looking for—the scuttle valves—would be in the tail section. Pulling and pushing himself along the interior piping, he felt the cylindrical walls close around him, felt the darkness and the water pressing him, crushing him. He felt the hot bloom of fear in his chest. He quashed it and refocused: Scuttle valve, Sam. Scuttle.
He shined his flashlight left, right, ahead. He was looking for a lever, a raised cylindrical fitting in the hull. . . . And then, suddenly, there it was, ahead and to the left. He reached out, grasped the lever, and heaved. Stuck. He drew his dive knife, wedged it between the lever and hull, then tried again. With a squelch and spurt of rust, the lever gave way. Lungs pounding, he turned to the opposite valve, repeated the process, then backed out and finned to the surface.
“You okay?” Remi called.
“Define okay.”
“Not mortally wounded.”
“Then, yes, I’m okay.”