Poseidon's Arrow

2

SWEAT TRICKLED DOWN THE PRESIDENT’S NECK, dampening the collar of his starched white shirt. The mercury was hovering near triple digits, unusual for June in Connecticut. A slight breeze off Block Island Sound failed to cut the humidity, leaving the riverside shipyard a sweltering hothouse. Inside a massive green assembly bay known as Building 260, the air-conditioning fought a futile battle with the afternoon heat.

The Electric Boat Corporation had begun building diesel marine engines on the site along the Thames River in 1910, but ultimately submarine construction became the company’s bread and butter. The Groton shipyard delivered its first submarine to the Navy in 1934, and had since constructed every major class of U.S. underwater warship. Nearing completion inside the green building stood the imposing hull of the North Dakota, the latest fast attack submarine of the Virginia class.

From a scaffold stairway that led from the North Dakota’s conning tower, the President stepped heavily onto the concrete floor with a grunt. A large-framed man who hated confined spaces, he was thankful the interior tour was over. At least it had been cooler inside the submarine. With the economy a mess and Congress mired in another deadlock, visiting a shipyard seemed like the last priority on his agenda, but he had promised the Secretary of the Navy he would go boost the morale of the ship workers. As a small entourage flocked to catch up with him, he suppressed his irritation by marveling at the sub’s dimensions.

An amazing feat of construction.”

Yes, sir,” said a blond-haired man in a tailored suit who hung at the President’s elbow as if attached by a string. “She’s an impressive feat of technology.” Assistant Chief of Staff Tom Cerny had specialized in defense issues on Capitol Hill before joining the administration.

She’s slightly longer than the Seawolf class boats, but downright minuscule compared to a Trident,” said the tour guide, a chipper Electric Boat engineering manager. “Most people are used to seeing them in the water, where two-thirds of their bulk is hidden from view.”

The President nodded. As it lay on huge supporting blocks, the three-hundred-and-seventy-seven-foot-long hull towered over them.

She’ll be a great addition to our arsenal. I thank you for giving me the opportunity to see her up close.”

A granite-faced admiral named Winters stepped forward.

Mr. President, while we were happy to have you preview the North Dakota, she was not the reason we asked you up here.”

The President took off a white hard hat affixed with the presidential seal, handed it to the admiral, and wiped a bead of sweat from his forehead.

If a cold drink and a touch more air-conditioning can be worked into the bargain, then lead on.”

He was escorted across the building to a small door guarded by a uniformed security man. The door was unlocked, and the presidential group led in one by one, their faces captured by a video camera above the sill.

The admiral flicked on a bank of overhead lights, illuminating a narrow bay that stretched nearly four hundred feet. The President saw another submarine in a state of near completion, but this vessel was like nothing he had ever seen before.

Roughly half the size of the North Dakota, it sported a radically different design. Its unusually narrow jet-black hull tapered sharply at the bow. A low, egg-shaped conning tower rose just a few feet above its top deck. Two large streamlined pods were affixed close to the stern, almost in the shape of a dolphin’s tail. But the most unusual feature was a pair of retractable stabilizers, shaped like triangular wings, that stretched from either side. A pack of four large tubular canisters clung to their undersides.

The design reminded the President of a giant manta ray he’d seen while fishing off Baja California.

What on earth is this thing?” he asked. “I wasn’t aware we were building anything other than the Virginia class boats.”

Sir, this is the Sea Arrow,” the admiral said. “It’s a prototype platform developed under a secret R & D program to test highly advanced technologies.”

Cerny turned on the admiral. “Why wasn’t the President informed of this program? I’d like to know how it was funded.”

The admiral stared at the aide with the warmth of a starving pit bull. “The Sea Arrow was built with Defense Advanced Research Projects Agency and Office of Naval Research funding. The President is presently being informed of its existence.”

The President ignored them and strode along the vessel, peering at the odd appendages along the hull. He studied a concentric circle of small tubes that sprouted off the bow, then made his way aft, noting the sub had no propellers. He gave Winters a questioning look.

All right, Admiral, you have my curiosity. Tell me about the Sea Arrow.”

Mr. President, I’ll pass that task to Joe Eberson, who heads up the project. You met Joe earlier. He’s DARPA’s director of Sea Platforms Technology.”

A bearded man with studious eyes worked his way to the front of the group. He spoke in a measured tone with the hint of a Tennessee accent.

Sir, the Sea Arrow was, or is, being built as a multigenerational leap in undersea technology. We’re bypassing the traditional development process by integrating a range of cutting-edge technologies and advanced theories directly into the construction. We started with a planned number of technical features that were purely at the conceptual stage. Through the crash efforts of numerous independent engineering teams around the country, I’m happy to report we are very close to fielding the most advanced attack submarine in history.”

The President nodded. “So tell me about all these odd appendages. She looks like some flying creature from the Jurassic age.”

Let’s start at the stern. You’ll notice she has no propeller.” Eberson pointed at the rounded pods. “That’s what these two external cases are for. The Sea Arrow will be powered by a shaftless propulsion system. The North Dakota, as you saw, uses a nuclear reactor to power a traditional steam turbine, which in turn drives a shaft-mounted screw. On the Sea Arrow, we’ve gone to an external drive system, which will be powered directly from the reactor. Each of these two flared pods will contain a permanent high-intensity magnetic motor that drives a pump jet propulsion system.” Eberson smiled. “Aside from drastically reducing noise, the design frees up a tremendous amount of interior space, which has allowed us to shrink the vessel’s overall size.”

What are these permanent magnet motors?”

They’re an evolutionary, if not revolutionary, advance in the electric motor, made possible by recent breakthroughs in material sciences. A mix of rare mineral elements is synthesized to create extremely powerful magnets, which are then wound into high-performance, direct-current motors. We’ve invested a great deal of research in perfecting these motors—and believe they will revolutionize the way our future warships are powered.”

The President peered through a baffle on one of the pods and saw light shine through from above.

It looks empty inside.”

We haven’t actually received and installed the motors yet. The first is due in next week from the Navy’s research lab in Chesapeake, Maryland.”

You sure they’re going to work?”

While we haven’t fielded motors of this size, we are confident from our lab tests that they will provide the predicted levels of performance.”

The President ducked beneath one of the extended stabilizers, then glanced up at a pair of barrel-shaped protrusions fore and aft of the conning tower.

Eberson followed in his steps, narrating as he walked.

The wing-shaped extensions are retractable stabilizers for high-speed operations. They automatically withdraw into the hull when speeds drop below ten knots. The tube-shaped box is a torpedo canister, capable of holding four fish on each stabilizer. The canisters can be reloaded quickly when the stabilizer is retracted into the hull.”

Eberson pointed to the two barrel-shaped objects above them. “Those are subsurface Gatling guns. They’re similar to those used on surface ships, which shoot depleted uranium pellets at rapid fire for last-ditch missile protection. Ours have been developed to fire underwater, using compressed air, for last-ditch torpedo suppression. Of course, we’re banking that most enemy torpedoes will never come near us.”

He followed the President as he stepped toward the hull.

The conning tower, you’ll note, is of a slipstream design to accommodate high speed.”

Doesn’t look like she’ll allow for much of a periscope.”

The Sea Arrow doesn’t actually have a periscope, at least not in the traditional sense,” Eberson said. “She utilizes an ROV-type video camera that is deployed on a tethered fiber-optic cable. It can be released from a depth of eight hundred feet to give the crew a high-definition picture of what’s going on on the surface.”

The President continued on to the tapered bow and reached up to stroke one of the small tubes that jutted forward like a thin lance. “And this?”

That’s the key link that will really make her go,” Eberson said. “It’s a secondary upgrade we hope to implement, based on a technological breakthrough from one of our contractors in California—”

Admiral Winters cut him off. “Mr. President, why don’t we take a quick tour aboard, then we have a short presentation to show you that should answer all your questions.”

Very well, Admiral. Though I’m still waiting for my drink.”

The admiral hustled the group through a quick tour of the interior, where they found a streamlined interior that contrasted with the North Dakota in its sleek modernity and scale of automated systems. The Commander in Chief remained silent as he viewed the high-tech command center, the small number of plush crew’s quarters, and the odd assortment of padded seats with full safety harnesses that were positioned about the vessel.

After the tour, the President was led to a secure conference room, where he was finally given a cold drink. His normally jovial demeanor had turned hard, echoed by his aide Cerny.

All right, gentlemen,” the President bellowed. “What exactly is going on here? I see much more than some test platform for new technologies. That’s a seaworthy vessel on the verge of launch.”

Sir,” the admiral said, clearing his throat. “What we possess with the Sea Arrow is a complete game changer. As you know, there has been a recent surge in the threat to our naval forces. The Iranians have acquired a host of new subsea technologies from the Russians and are working feverishly to add to their fleet of Kilo class subs. The Russians themselves have dramatically kicked up their shipbuilding efforts, with the help of oil revenues, to replace their aging fleet. And, of course, we have the Chinese. While they continue to claim their military expansion is strictly for defensive purposes, it’s no secret that they’ve been rapidly expanding their blue-water fleet. Sources expect their Type 097 nuclear sub to go operational any day. That all makes for growing threats in the Pacific, the Atlantic, and the Persian Gulf.”

The admiral looked the President in the eye and gave him a grim smile. “On our side of the ledger, we have a continually shrinking fleet as the cost of each new deployed vessel skyrockets. At a cost of over two billion dollars each, we all know there’s just a limited number of Virginia class subs that can be squeezed out of an ever-tightening budget.”

The national debt is still out of control,” the President said, “so the Navy will have to take its medicine, just like everybody else.”

Precisely, sir. Which brings us to the Sea Arrow. Eliminating the lengthy research-to-production cycle and piggybacking on some economies of scale with the Virginia program allowed us to construct her at a fraction of the North Dakota’s cost. As you can see, she has been built in utmost secrecy. We intentionally built her alongside the Dakota to divert attention and allow for delivery of components without suspicion. We hope to secretly launch her for sea trials when the North Dakota is publicly commissioned.”

The President frowned. “You’ve done a splendid job of keeping her under wraps so far.”

Thank you, sir. As Dr. Eberson mentioned, what we have before you is the most technically advanced submarine ever built. The shaftless propulsion drive, the external torpedo tubes, and the torpedo suppression system are all state-of-the-art technologies. But there’s an additional element to her design that truly sets her apart.”

Eberson had already loaded a disk into a projection player.

On a whiteboard, video footage appeared of the open stern of a small boat bobbing about a mountain lake. Two men lifted a bright yellow torpedo-shaped device from the deck and placed it over the side. The President could see by its winged appendages that it was a mock-up of the Sea Arrow, operated by remote control.

That is a scale model,” Eberson said. “She was built to the exact configuration and uses the same type of propulsion system.”

As the model was launched, the image switched to an onboard camera view. A row of tracking meters superimposed at the bottom of the screen indicated the model’s speed, depth, pitch, and roll.

The model submerged a short depth into sage green waters and began accelerating. A flurry of lake sediments rushed past the camera as the tiny submersible gained speed. Suddenly, a surge of small bubbles filled the screen, obscuring the image. The video remained a snowy blur as the model continued to accelerate. The President’s mouth dropped as he watched the speed gauge roll into triple digits. Eventually the model slowed and returned to the surface, where it was retrieved before the video clip ended.

Silence filled the room for a moment before the President spoke in a low voice. “Am I to understand that this model attained an underwater speed of one hundred and fifty miles per hour?”

No, sir,” Eberson replied with a smile. “She attained a speed of one hundred and fifty knots, which would be on the order of one hundred and seventy-two miles per hour.”

That’s impossible. I’ve been told naval propulsion technologies can’t get past seventy or eighty knots. Even the North Dakota only manages thirty-five.”

Didn’t the Russians develop some kind of torpedo that can run over a hundred knots?” Cerny asked.

Yes, they have the Shkval,” Eberson said, “which is a high-speed, rocket-powered torpedo. A similar principle is in play with the Sea Arrow. It’s not the propulsion that allows the high rate of speed but rather supercavitation.”

Forgive my lack of engineering know-how,” the President said, “but doesn’t supercavitation have to do with disturbances in the water?”

Yes. In the case here, it involves creating a gas bubble around the object traveling underwater. The bubble frees up the water’s drag, allowing for much higher speeds. The array of tubes on the Sea Arrow’s prow will be part of the supercavitation system we hope to deploy. Combined with the high-power magnetic motors, we fully expect to match those kinds of speeds—without the range limitations the Russians have with their rocket torpedoes.”

Perhaps,” Cerny said, “but there’s a substantial difference between a torpedo and a two-hundred-foot submarine.”

The differences mostly come in the way of control at high speeds,” Eberson said. “The Sea Arrow’s Jurassic wings, as the President described them, will aid in providing stability. The supercavitation system itself will more directly affect control by manipulating the size and shape of the gas bubble. It’s an untested theory on a vessel this size, but our supplier of the system is confident in its capability. I will actually be monitoring a final sea trial of their model next week.”

The President sat, rubbing his chin. Finally, he looked at the admiral with a knowing gaze. “Admiral, if she works as advertised, what exactly does it mean?”

The Sea Arrow will put us twenty years ahead of our nearest adversary. The Chinese, Russian, and Iranian buildup will be effectively neutralized. We’ll have a weapon at our disposal that is nearly invulnerable. And with just a handful of Sea Arrows, we’ll be able to defend every corner of the globe on almost immediate notice. What it really means, sir, is that we won’t have to worry about the safety of the seas for the balance of our lifetimes.”

The President nodded. The heat and humidity seemed to disappear from the room, and, for the first time all day, he smiled.





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