At the first ledge, Scudi put an arm around his waist and helped him to a place against another ladder. She waited a blink while he caught his breath, then:
"We have to hurry. They may guess where we've gone."
"Can they know where we are?"
"There are no sensors here, and they won't know I have a key to the service passages."
"How did you get it?"
"From my father's desk. I found it while showing the Justice the den."
"Why would your father have had such a key?"
"Probably for the same reason we're using it. Emergency escape."
She patted his chest gently and turned away. With a sigh, she started on the next stage of their climb.
Again, Brett followed.
He pressed faster and faster, but she was always farther up, widening the distance between them. Then there was the second ledge and Brett drew himself onto it, panting. Scudi guided him to the next ladder. When he could control his breathing, he asked, "How do you move so fast?"
"I run the passageways and work out in the gym," she said. "Those of us who will go back to the open land must be prepared for the demands to be made on our bodies. It will be different from the sea."
He knew it was an inadequate response, but all he could manage was, "Oh."
"Are you rested enough for the last stage?" she asked.
"Lead on."
This time, he stayed with her enough that his hand met her foot from time to time. He knew she was setting a slower pace because of him and this pained him. Still, he was glad for the reserves it might give him. There was still that yawning void below, a place made even more frightening by its drop into a dim void. When he felt the final rung and another ledge, he wrapped an arm around the ladder's vertical supports and drew in deep, gasping breaths.
Scudi's hand touched his head. "You all right?"
"Just ... catching my breath."
She put a hand underneath his right arm. "Come up. I will help. It is safer up here. There is a railing."
With Scudi's hand lifting, Brett crawled over the lip of the ledge. He saw the rail and caught a good grip on it, pulling himself the last few millimeters and then stretching out on the hard metal grate. Scudi rested a hand on his back and, when she felt his breathing smooth out, drew away.
"Let's review the plan," she said.
She sat with her back against a metal wall.
"Go ahead," he said. He drew himself up beside her, smelling the sweet freshness of her breath, feeling the brush of her hair against his cheek.
"The hatch is directly behind me. It's a double hatch. The docking bay is kept under enough pressure to hold a working level on the water. We'll open in an alcove off the docking bay. If no one is there, we will just go out and walk normally toward one of the foils. You are my charge and I am showing you around."
"What if someone sees us coming out of the hatch?"
"We laugh and giggle. We're young lovers on a rendezvous. We may get a lecture. If so, we should at least appear to be sorry."
Brett looked at the smooth profile of Scudi's face.
Clever. Close enough to the truth that he wished it were so.
"Where can we hide in this docking bay?" he asked.
"We won't hide. We will go to one of the foils, one where the operating crew is not aboard. We will escape topside in the foil."
"Can you really operate a foil?"
"Of course. I go topside often in the lab foil." She was all seriousness. "Do you understand what we're going to do?"
"Lead the way," he said.
Scudi slid away from him. There was the slightest sound of metal grating against metal. A small hatch swung wide, letting in dim light. It was bright enough to Brett that he was forced to squint. Scudi slipped out and reached back a hand for him. Brett followed, wriggling through the tight opening. He found himself in a low, rectangular space with gray metal walls. Light came in from a port at the far end. Scudi dogged the hatch behind them, then opened the far hatch. As she had promised, they emerged into a narrow alcove.
"Now," she whispered, taking his hand. "I am showing you the landing bay and the foils."
She led Brett out onto a narrow platform with a railing and stairs down to a deck about three meters below them. Brett stopped and resisted Scudi's attempts to drag him farther. They were under a transparent dome that stretched away from him for several hundred meters.
Plaz, he thought. Has to be. Nothing else could take that pressure. The docking bays were located inside this gigantic inverted cup that held out the sea. A plaz umbrella! He looked up at the surface, no more than fifty meters away, a milky silver region with the doubled shafts of light indicating that both suns stood above the horizon.
Scudi tugged at his arm.
Brett looked down to the deck - a giant metal grate with piers stretching out the far side toward the descending lip of the facility's plaz cover. As he watched, a submerged foil cruised under the far lip and lifted into the bay with a cascade of water off its hull. The foil slid into an empty bay, its engines a painful growl in his ears even at this low speed. With the newcomer, Brett counted six of the huge boats lined up in a row. Mermen worked busily around them on the piers, securing the lines of the new arrival, wheeling cargo on carts to and from the open hatches in the line of craft.
"They're so big," Brett said, craning his neck at the prow of the foil directly ahead of them. Someone was working up there, dreamily scraping a dry skin of green kelp off the extruded fenders.
"Come along," she said, her voice slightly louder than conversation required, "I'll take you aboard one of them. Kareen wants you to see it all."
This, Brett realized, was for the benefit of a Merman who had stopped below them and was watching them with a questioning tilt to his head. As Scudi spoke, he smiled and strode away.
Brett allowed her to lead him down the stairs.
"Food transport uses only the seventy-meter cargo model," she said. "In spite of their size, they'll do at least eighty knots. Somewhat slower in heavy seas. I'm told they can top a hundred knots with a light load."
Her hand in his, Scudi guided Brett down the line of foils, weaving in and out of the passing workers and stepping aside for loaded carts. At the end, they met six white-uniformed workers wheeling a covered cart toward them along the pier.
"Repair crew," Scudi explained. She spoke to the first man in the group. "Something wrong with this one?"
"Just a little trouble with the thrust reverser, Miss Wang." All six stopped while the leader spoke to Scudi. They all looked very much alike in their white coveralls. Brett saw no name tags.
"Can I take our guest aboard to show him around? I'm familiar with this one," she said. Brett thought he detected a note of false petulance in her voice.
"I'm sure you are," the crewman said. "But be careful. They've just finished refueling it for the test run. You'll have to be out in about an hour. The next shift will be loading it then."
"Oh, good," Scudi said, dragging Brett around the repair cart. "We'll have it all to ourselves and I can show you everything." She called back over her shoulder. "Thanks!"
The crewman waved and helped his men trundle their cart down the pier.
Midway down the hull, Scudi led the way up a narrow gangplank. Brett followed her into a passage lighted by overhead tubes. She motioned for him to wait while she peered back out the open hatch. Presently, she pressed a switch beside the hatch. A low hum sounded and the gangplank slid in. The hatch sealed behind it with a soft hiss.
"Quick!" she said. She turned and once more they were running. Scudi led him up a series of gangways and along a wide corridor, emerging finally into a plaz-windowed control room high above the prow.