Flood Tide

“Have you given out this information to anyone besides me?” asked Zhu Kwan warily.

“Not a soul,” Perlmutter answered. “You're the only one I know who had any interest in the wreck.”

“I would be grateful to you, St. Julien, if you did not reveal your discovery. At least not for the next few months.”

“From this moment on, I promise not to disclose a word.”

“Also, as a personal favor—”

“You have but to name it.”

“Please do not fax Gallagher's report. I think it would be better if you sent it by private courier. I will, of course, take care of any expense.”

“Whatever you wish,” said Perlmutter agreeably. “I'll hire the services of a courier the minute I lay down the phone.”

“Thank you, my friend,” Zhu Kwan said sincerely. “You have done me a great service. Though the Princess Dou Wan is of no great historical or economic value, it has been a mosquito in my ear for many years.”

“Believe me, I've been there. Some lost shipwrecks, no matter how insignificant, captivate and consume a researcher's imagination. They're never forgotten until answers behind their disappearance are finally found.”

“Thank you, St. Julien, thank you.”

“My best wishes to you, Zhu Kwan. Good-bye.”

The Chinese historian could not believe his luck. What had seemed an impossible enigma only minutes ago had suddenly been solved and dropped in his lap. Though exhilarated, he decided to put off informing Qin Shang until the courier arrived with lan Gallagher's narrative of the final moments of the Princess Dou Wan and he had an hour or two to study it.

Qin Shang would be highly pleased to learn that the fabulous art treasure stolen from the country had been lying safe and preserved in the fresh water of a lake all these years and was now within reach. Zhu Kwan fervently hoped that he would live long enough to see the artifacts on display in a national gallery and museum.

“You do nice work, St. Julien,” said Sandecker as Perlmutter put down the phone. “You missed your calling as a used-car salesman.”

“Or a politician ru

“I feel like a low-down skunk, misleading that nice old man,” said Perlmutter. He paused and looked around Sandeck-er's office at the four NUMA men seated around him. “Zhu Kwan and I go back many years. We've always had the highest respect for each other. I hated lying to him.”

“Fair is fair,” said Pitt. “He co

Perlmutter shook his head. “Zhu Kwan is a hard-nosed scholar. He won't make any a

Rudi Gu

Sandecker looked at his special projects director. “Will we have enough time to properly bring up the art treasures before Qin Shang's salvage ship arrives?”

Pitt shrugged. “Not if the Ocean Retriever is the only ship working the wreck.”

“Not to worry,” said Gu

“Speed is essential,” said Sandecker. “I want the treasure raised before word leaks out. I want no interference from any quarter, including our own government.”

“And when the salvage work is completed?” inquired Perlmutter.

“Then the artifacts will be quickly turned over to facilities equipped to preserve them from damage after so many years of immersion. At that time we'll a

“And Qin Shang?” Perlmutter probed deeper. “What happens when he shows up on site with his own salvage ship?”

Pitt gri

THE OCEAN RETRIEVER, WITH PITT, GIORDINO, GUNN AND Julia on board, was the first to arrive and position herself over the wreck of the Princess Dou Wan. The Canadian salvage ship from Deep Abyss Systems Limited out of Montreal, Hudson Bay, arrived only four hours later. She was an older vessel converted from a powerful oceangoing salvage and tugboat. Aided by clear weather and smooth water, the salvage of the art treasures commenced immediately.

The underwater part of the project was handled by submers-ibles using articulated arms in cooperation with divers encased in deep-water atmospheric diving systems called Newtsuits that were similar in appearance to the Michelin tire man. Bulbous, constructed of fiberglass and magnesium, and self-propelled, the suit enabled a diver inside to work for long periods of time at the four-hundred-foot-plus depth without concern over decompression.

The artifacts were begi

An immense open barge with long ballast tanks attached along its hull was parked in place by use of the global positioning system and sunk, falling to the lake bed a short distance from the forward section of the Princess Dou Wan. Then crane operators, working from the ships on the surface and employing underwater cameras, manipulated the clamshell claws on the end of their winch cables, deftly recovering the crates exposed on the outer decks of the ship, those deep inside the cargo holds and the artifacts littering the bottom between the two sections of the broken hull. The crates, together with their contents, were then lifted onto the sunken barge. When it was fully loaded, the ballast tanks were filled with pressurized air and the barge rose to the surface. A tugboat then took it in tow for the trip to the Port of Chicago, where it was met by a team of NUMA archaeologists who took charge of the art treasures. They very carefully removed them from the waterlogged packing cases and immediately immersed them in temporary conservation tanks until they could be transported to a more permanent preservation facility.

No sooner was one fully loaded barge towed off site than another one was maneuvered into position and sunk, repeating the process.

Six submersibles, three owned by NUMA, one by the Canadians and two by the Navy worked in harmony, meticulously lifting the crates with their invaluable contents into the specially designed cargo compartment of the sunken barge.

To facilitate the removal of the artwork from inside the hull, the divers in the Newtsuits cut through the steel plates with state-of-the-art torch systems that melted metal underwater at an incredible rate. Once an opening was made, the submersibles moved in and lifted out the treasures, aided by the clamshell claws from the cranes on the surface.

The entire operation was observed and directed from a control room on board the Ocean Retriever. Video screens linked to cameras set at strategic locations around the wreck revealed every stage of the recovery project. The high-resolution video systems were carefully monitored by Pitt and Gu