Chapter 1: Drift Correction

They were three days into a milk run when the nav computer drifted six degrees to starboard and kept pretending it hadn't.

Kael saw it before the warning stack did. Not because the instruments were bad; the Lethe's Margin's instruments were serviceable when cajoled and tolerable when threatened. But the plotted line on the forward display had developed a softness at the edges, a slight drag where there should have been clean alignment, and Kael had spent too many years watching ships lie politely to miss the difference.

Their right hand was already on the manual override before the first advisory tone sounded.

"Hold that," Kael said.

Soj, in the co-pilot's chair, glanced up from the comms board. "That tone usually means you've been vindicated by machinery."

"It means the machine noticed late."

"Which is still noticing."

"Maren," Kael said.

From the open panel beneath the portside diagnostics console, Maren's voice came out dry and level. "If this is about the warning tone, I heard it. If it's about the vibration in deck plating four through six, I heard that an hour ago and you ignored me."

Kael brought up the drift correction overlay. The line sharpened, then bent again as the system tried to compensate with old numbers. "Nav is applying a correction for a gravity well that isn't where it thinks it is."

Soj leaned in, fingers already moving across the parallax controls. "That's bad, yes?"

"It's annoying," Kael said. "It becomes bad if we let it fly the ship."

"So bad adjacent."

"Closest object with clean light?"

Soj snorted softly. "In the outer Palleth margins? Define clean."

"Pick the thing lying least."

"Everything's moving, Commander."

Kael adjusted the gain on the forward array. Beyond the viewport, the black was true black: not the crowded, civilized dark of the central lanes, all traffic markers and station lights and regulated approach vectors, but deep margin emptiness. A spray of distant stars. A rust-red gas giant hanging off the far port side like an old bruise. Nothing human visible for eleven million kilometers.

"Then pick the thing moving least," Kael said, "and pretend."

"That's the kind of navigational philosophy they should print on certificates."

"It would save time."

Soj's mouth twitched. "Parallax lock in five."

Kael felt, rather than heard, Maren shove herself out from under the diagnostics console. The engineer rose in one smooth motion, broad shoulders clipping the edge of the open panel without seeming to notice. She wiped one hand on a rag already black with sealant dust and crossed to the structural readout.

"Hull stress is nominal," Maren said. "If you intend to make that untrue, I'd like ten seconds' notice."

"You're getting six."

"Generous."

At the cargo station, Doss said, "Forward hold is secure. Aft restraint webbing on pallet three has some play."

Kael looked over. Doss was already tightening the restraint by hand, expression unreadable, one sleeve shoved back from the wrist with the absent precision of someone who disliked inefficiency on principle. Three sealed data cores, two crates of stripped relay components, and a compact mineral sample locker sat in the hold behind them, all routine salvage from a dead survey buoy and not remotely worth dying over.

"How much play?" Kael asked.

"Enough that I noticed it."

"So not much."

Doss cinched the webbing another notch. "I dislike estimates framed as reassurance."

"So noted."

The warning tone sounded a second time, offended now.

Kael cut the nav computer out of the loop.

For half a second the ship seemed to inhale. The deck vibration changed under their boots, shedding the faint, wrong rhythm of automated correction and settling into something direct. Manual control always felt more honest. The Lethe's Margin was old enough that its systems had personalities and new enough that none of them agreed with each other. When flown by hand, at least the argument was visible.

"Parallax lock," Soj said. "Using the red giant on mark seven and the debris smear off port bow. Neither ideal. Both existent."

"Ideal is for rich crews."

"We're not rich?"

Maren said, "If you have to ask, no."

Kael almost smiled. "Feed it."

The overlay shifted. Distances resolved into workable numbers. The drift wasn't six degrees after all; it was four-point-eight and worsening, the kind of slow error that could turn a straight transit into an expensive apology if you trusted it long enough.

"Manual correction two points to port," Kael said. "Compensate for Palleth outer pull and whatever stupidity the nav stack has been cultivating since yesterday."

Soj's hands moved fast and light over the board. She had the quick economy of someone who thought with her mouth and moved with her wrists. "Routing compensation. If we die because the computer got nostalgic for a gravity well, I'm haunting procurement."

"Queue for the afterlife appears long," Doss said.

Soj tipped her head toward them. "There you are. I was worried you were going to let me carry the conversational burden alone."

"I considered it."

Kael adjusted thrust in short increments. The gas giant off port shifted a fraction in the viewport. The plotted line on the display straightened, hesitated, then began to settle into proper alignment.

Maren studied the structural numbers. "Starboard plating is complaining."

"It complains recreationally," Soj said.

"That's you," Maren said. "The plating has a more nuanced tone."

Kael listened to the ship through the soles of their boots, through the slight resistance in the controls, through the familiar pressure at the base of the skull that meant all parts were currently disagreeing but still willing to continue employment. "How close?"

"Nowhere interesting," Maren said. "Keep it smooth."

Kael kept it smooth.

This was the part no one outside salvage ever understood. Not the danger—people understood danger in the abstract, liked to nod at it over watered drinks and ask whether the Drift was haunted. The work. The exactness. The way four people in a small cockpit became one process under pressure, each station feeding the next, every competence load-bearing. A correction like this was nothing. A milk-run annoyance. A line item in the maintenance log. But the ship stayed alive by accumulations of nothing, by catches made early and webbing tightened a notch and structural complaints listened to before they became emergencies.

"Correction holding," Soj said after a moment. "We're back inside tolerance."

Doss checked the cargo restraints again because that was who Doss was. "Forward hold stable."

Maren rested one hand on the edge of the open panel and tilted her head, listening to the ship's bones through the deck. "Hull agrees, reluctantly."

Kael let the manual control settle, watched the plotted course hold clean for three full beats, then another. Only then did they route partial authority back to the nav computer. The machine accepted it with the sullen dignity of something corrected in public.

Soj leaned back. "Another glorious victory over preventable system negligence."

"It wasn't negligence," Kael said. "It was outdated mass-shadow data."

"You defend machinery the way some people defend family."

Maren said, "Family usually deserves it less."

That got a short breath out of Doss that was close enough to a laugh to count.

Kael closed the drift overlay and started tagging the faulty data for recalibration. Their hands moved automatically: log the incident, flag the sensor stack, note the discrepancy, queue the nav computer for a full scrub when they hit station. The motions steadied the room after the correction, gave the crew somewhere to put the leftover energy.

Outside the viewport, the outer margins went on being vast and uninterested. The gas giant's ring plane caught a thin blade of distant light and turned it briefly silver. Past that, nothing but the long dark between mapped things.

Soj swiveled slightly in her chair. "Tell me again why we take contracts this far out for relay scrap and survey cores no one wants."

"Because someone wants them enough to pay transport," Doss said.

"And because," Maren added, dropping back to one knee beside the open panel, "you enjoy complaining in aesthetically severe environments."

"I can complain anywhere," Soj said. "I choose to do it professionally."

Kael signed off on the incident report and sent it into the maintenance queue. "Three hours to the waystation if the computer behaves."

"If it doesn't?"

Kael glanced at the panel Maren had reopened. "Then Maren gets to say I told you so about six unrelated things."

Maren, already halfway inside the diagnostics cavity again, said, "Only six?"

Soj grinned. "See, this is why I stay. The generosity."

Kael let that pass without comment and ran a secondary check on the course. Not because it needed one. Because routine after a correction mattered, and because hands that kept moving did not go looking for other work.

The cockpit settled by degrees. Soj returned to the backlog on the comms board, muttering at traffic notices and station fees under her breath. Maren began dismantling a relay coupler that, to Kael's eye, had not yet earned disassembly but would no doubt reveal a flaw simply to justify her instincts. Doss finished at the cargo restraints and resumed the inventory sheet with the care of someone balancing numbers against reality and distrusting both.

The Lethe's Margin moved on.

A small ship. Four people. The enormous dark pressing softly at the glass.

Kael checked the seal on the manual override housing, then checked it again.

"Commander," Soj said after a minute, not looking up. "You know we survived the traumatic event of your being correct."

"I'll log it for the record."

"Please do. I'd like a commemorative plaque."

"We can mount it over the faulty nav stack," Maren said.

"Perfect. A monument to your inability to update software."

"My inability?" Maren asked.

Soj lifted one hand in surrender. "Our shared institutional inability."

Doss said, "The institution appears to be three and a half people."

Kael looked over. "Who's the half?"

Doss considered. "Depends who skipped meal cycle."

Soj laughed outright at that, quick and bright, and for a moment the cockpit warmed in the particular way it always did after pressure—never announced, never examined, just present in the rhythm returning.

Kael logged the correction, closed the panel on the nav report, and rose. "I'm checking aft."

"Cargo's fine," Doss said.

"I'm aware."

"Then why—"

But Kael was already moving down the narrow corridor, one hand grazing the bulkhead by habit as the ship hummed around them. The recycled air smelled faintly of hot wiring, sealant, and the coffee substitute Soj kept trying to improve by changing nothing except her level of optimism. Underfoot, the deck plating carried the low, steady vibration of a ship still holding itself together.

They passed the engine room hatch, where Maren had left a toolkit in an arrangement that looked accidental and was not. Passed the water reclamator with its usual disgruntled thrum. Passed the crew alcove, empty for the moment.

At the aft compartment threshold, Kael stopped.

Doss was there after all, though the inventory feed was still open at the cargo console in the cockpit. They sat alone on the fold-down bench beside the stern access lockers, elbows on knees, hands clasped loosely enough to suggest control and tightly enough to mean the opposite. No screen in front of them. No manifest. No numbers. Just stillness.

It struck Kael, not suddenly but with the weight of something already true, that Doss had hardly spoken outside direct necessity since the correction. Since before it, probably. Eleven hours, if Kael counted back through the watch rotations and cargo checks and the short exchanges that did not add up to speech.

Doss looked up, expression shuttered almost at once.

Kael had a question ready. It reached the back of their teeth and stopped there.

Behind them, somewhere forward, Soj was saying something loud and aggrieved about docking fees. Maren answered with the patience of a person accustomed to needless suffering. The ship went on around them, warm in its working way.

Kael checked the seal on the stern locker instead.

"Restraint webbing on pallet three is good now," they said.

Doss looked at them for a beat too long. "Yes."

Kael nodded once. Ran a hand along the locker seam, though there was nothing wrong with it. "Three hours to station."

"I know."

Another beat.

Then Kael moved on, because there were diagnostics to finish and a course to verify and because whatever was happening in Doss's silence had not yet found a shape that could be handled.

The corridor felt narrower on the way back.

In the cockpit, Soj glanced over as Kael returned. "Cargo revolt?"

"No."

"Engine fire?"

"No."

Maren didn't look up from the coupler in pieces at her feet. "Then the universe remains disappointingly stable."

Kael took their chair. Put their hands back on the controls.

Outside, the dark held. Inside, the ship moved through it on four people's labor and whatever else a crew was made of when no one was naming it.

Three hours to station.

Three hours before the message waiting in the comms backlog turned an old wound into a course heading.