Stenseth’s order to accelerate thwarted Zak’s attempt to catch the ship and crew off guard. But the icebreaker still had a decided advantage in speed, if no longer surprise. The Otok had closed to within a quarter mile before the research ship could break twenty knots. Stenseth peered out the aft bridge window but could see nothing through the black fog.

“She’s coming up quick,” the helmsman said, watching the icebreaker’s radar smudge approach the center of the radar screen. Stenseth sat down and readjusted the range to read in hundred-yard increments.

“We’ll let her come in tight. But when she touches the hundred-yard mark, I want you to bring us hard to starboard, on a due east heading. There’s still plenty of sea ice along the shore of King William Island. If we can get close enough, they might lose our radar signature against it.”

He gazed at an open chart, noting their distance to King William Island was over fifteen miles. Much too far away, he knew, but his options were few. If they could parry a bit longer, maybe the pursuers would give up the hunt. He stood and watched the radar screen until the tailing target drew near, then he nodded at the helmsman.

The heavy research ship shook and groaned as the rudder was jammed full over, the vessel heeling onto its new course. It was a lethal game of blindman’s bluff. On the radar screen, the icebreaker seemed to merge with their own position, but Stenseth still caught no sight of the icebreaker. The Otok continued on its westerly course for nearly a full minute before detecting the Narwhal’s maneuver and turning sharply to the east in pursuit.

Stenseth’s action gave the ship precious seconds to build more speed while the crew was alerted and ordered topside. But it wasn’t long before the icebreaker was closing in on their stern once again.

“Hard to port this time,” Stenseth ordered, when the Otok crossed the hundred-yard mark once again.

The icebreaker anticipated the move this time but guessed wrong and veered to starboard. She quickly took up the chase again as Stenseth attempted to angle closer to King William Island. The faster ship quickly moved in and the Narwhal was forced to juke again, Stenseth opting to turn hard to port once more. But this time, Zak guessed correctly.

Like a hungry shark striking from the depths of a murky sea, the icebreaker suddenly burst through the fog, its lethal prow slashing into the flank of the Narwhal . The shattering blow struck just aft of the moon pool, the icebreaker’s bow slicing fifteen feet in from the rail. The Narwhal nearly keeled over from the impact, shuddering sideways into the waves. A massive spray of freezing water poured over the deck as the ship struggled to regain its center of gravity.