"Those Mosby explosive heads must be more powerful than I was led to believe."

Giordino jerked his eyes back and to the side as another explosion burst on the frame between the starboard hull and the nose-viewing shield. Water began to spurt in where metal met glass. "Those things do more than scratch paint and make dents," said Giordino. "I can vouch for it."

"We're losing power to the thrusters," came Pitt's voice in a precision display of unruffled coolness. "That last strike must have caused a short in the system. Dump the grate. It's causing too much drag."

Giordino complied, working the manipulator controls and releasing the grate. Through the silt cloud he could see several places in the grate where the rusting iron had been gouged away by the explosive charges. He watched it fall out of sight back into the sediment on the bottom. "So long, old pal, you served your purpose."

Pitt stared briefly at a small navigation monitor. "Two hundred feet to the antenna. I make us about to pass under the liner's screws."

"No hits in the last minute," said Giordino. "We must have left our angry friends behind in the fog. I suggest you cut back on your throttles and conserve whatever battery power is left."

"Nothing left to conserve," replied Pitt, pointing to the instrument dial indicating battery power. "We're down to one knot and the needle is in the red."

Giordino smiled tightly. "It would make my day if Shang's divers got lost and gave up the chase."

"We'll know soon," said Pitt. "I'm going to angle up and out of the cloud. The instant we break into clear water, look astern and tell me what you see."

"If they're still hanging around," said Giordino, "and they spot us limping along at half a knot, they'll be all over us like maddened wasps."

Pitt said nothing as the Sea Dog II emerged from the swirling mud storm. He squinted his eyes, trying to pierce the velvet-green water, searching for the antenna line and Cabrillo's diver. A vague silhouette wavering seventy to eighty feet ahead and slightly to port slowly evolved into the bottom of the launch rocking in the waves rolling across the harbor.

"We're almost home!" Pitt exclaimed, his spirits lifted.

"Stubborn little devils," said Giordino morosely. "Five of them are swimming like sharks up our tail."

"Smart fellas to catch on so quick. They must have kept one man in the clear as a lookout. Soon as he caught us rising out of the gunk, he alerted his pals by radio."

An explosive charge smashed against one of the Sea Dog IPs tail stabilizers and blew it away. A second charge narrowly missed the hemispherical nose section. Pitt fought for control, urging, willing the submersible on a straight course toward the launch. The instant he saw one of Shang's divers out of the corner of his eyes, overtaking and coming in from the flank of the sub, he knew it was all but over. Without battery power and help from Cabrillo, there was no escape.