Dead Reckoning

# Chapter 1: Dead Reckoning

The autopilot had been making the sound again — a faint, rhythmic complaint, somewhere between a tick and a groan — and Vega had been ignoring it for three days in the practiced way she ignored most things that weren't immediately threatening to sink her.

She was lying on the cockpit sole with her head wedged under the helm pedestal and a headlamp strapped to her forehead, probing the steering quadrant with a screwdriver, when ARIA said: *The research found that people who describe themselves as "comfortable with solitude" are statistically more likely to score highly on measures of suppressed affect.*

"I'm not comfortable with solitude," Vega said. "I'm in a relationship with it."

*I'm not sure that distinction helps your case.*

"It wasn't meant to."

She found the source of the noise — a loose set screw on the quadrant, the kind of thing that would have taken a marina mechanic forty minutes and three hundred euros to diagnose, and would take her ten minutes and one allen wrench. She felt the small, specific satisfaction of this. The sea was three feet below her, separated from her by a couple of centimeters of fiberglass, and it sounded like moving furniture in another room.

Day 847.

The Tyrrhenian Sea was doing what it usually did in early September: behaving impeccably during the day and getting ideas at night. The swell was long and glassy, three-foot rollers from the northwest that The Meridian climbed and descended with the patient rhythm of something alive. To the east, if Vega squinted past the bimini's edge, she could just make out the darker smear of Sicily on the horizon — like a watercolor that hadn't dried properly.

"Read me the next bit," she said.

*"Loneliness," ARIA quoted, with the precise neutrality she used when reading aloud, "is not the same as being alone. Loneliness is a perceived discrepancy between the social connection a person has and the social connection they desire. A person can be surrounded by others and experience profound loneliness; a person can be entirely alone and experience none."*

"Right, so they're basically describing me."

*Which version?*

"The second one. Obviously."

There was a pause. ARIA was very good at pauses. She had a whole range of them — the informational pause, while she processed; the tactical pause, before she said something she knew would land badly; and the pause that was itself a response, which she deployed when words would be redundant or impolite. This was the third kind.

"I'm not lonely," Vega said, more firmly.

*I didn't say you were.*

"Your pause said it."

*My pause was waiting for you to say it.*

Vega extracted herself from under the pedestal, sat up on the cockpit sole, and held the set screw up to the headlamp. Small and silver. Impossible, really, that something this size could produce that quality of noise. She thought: everything announces itself eventually.

She got the allen wrench from the tool roll.

"Tell me what the study says about people who choose this kind of life. Specifically."

*The study doesn't address sailors specifically. It's primarily a meta-analysis of remote workers, wilderness researchers, and people in long-distance relationships.* A beat. *I could extrapolate.*

"Please don't."

The fix took seven minutes. She wedged herself back under the pedestal, tightened the set screw, came back up, tested the autopilot by hand — smooth, silent, exactly as it should be. She wiped her hands on a rag that had long since stopped being useful for wiping hands and was now more of a grease redistribution system.

The podcast had been Bola's recommendation. This was one of those facts that felt meaningful in a way Vega kept declining to examine. Her sister sent her things — podcast links, articles, the occasional photograph of their mother's garden in Lagos that arrived three days after being taken, pixelated by the satellite connection. Vega responded to all of these with the dedicated attention she gave to important weather reports: she absorbed the information, logged it, and declined to be altered by it.

Her phone was in the cabin, in the pocket of her foul weather jacket, fully charged and essentially silent. She got three kinds of messages: weather from the router subscription she paid for; news headlines from a service she kept meaning to cancel; and Bola. That was all. She had left WhatsApp groups and mailing lists and all the passive-aggressive digital social contracts of her previous life with a feeling she could only describe as clinical — the way you felt removing a cast. Relieved, and then surprised by the paleness of the skin underneath.

Bola had messaged yesterday morning, while Vega was running the engine to charge the batteries.

*Just checking in. How far are you? When do you think you'll be in Dubrovnik?*

Then, four hours later, with the cheerful persistence that was Bola's most essential quality: *Also — and no pressure — but I wanted to talk to you about something. When you have a minute. Love you.*

*When you have a minute.* As if the Mediterranean were lined with minutes Vega was just sitting on. She had composed three responses in her head since yesterday morning and discarded each of them. The first was too warm. The second was too clipped. The third was just true, which made it impossible.

"ARIA," she said.

*Yes.*

"What do you think Bola wants to talk about?"

*You've read the message. You know what she wants to talk about.*

"I'm asking for an outside perspective."

*I have only an inside perspective. I don't know Bola except through what you've told me about her, which is limited and probably skewed by the fact that you love her and find her irritating in approximately equal measure.* Pause. *But yes. I think it's about the wedding.*

Vega put the allen wrench back in the tool roll and rolled it up and secured it with the leather strap and put it back in the starboard cockpit locker and sat down on the helm seat and looked at the horizon, which was completely indifferent to everything she was experiencing. She appreciated this about the horizon.

"She said there was no pressure."

*She always says there is no pressure.*

"When it's the most high-pressure possible situation."

*Yes.*

Vega had known about the wedding since spring — Bola and Dele, together six years, an engagement that had felt inevitable to everyone except possibly Bola and Dele themselves, who had apparently needed to have several thousand conversations before arriving at certainty. She was happy for them. She was. She was happy for them the way you were happy for people whose happiness existed in a dimension you had temporarily exited.

"I'll reply tonight," she said.

*You said that yesterday.*

"Tonight I mean it."

She spent the afternoon in maintenance. This was one of the truths of living aboard that people who romanticized sailing consistently omitted from the fantasy: the boat was always trying to revert to a state of greater entropy. Varnish oxidized. Stainless steel pitted in the salt air. Ropes grew brittle at the clutches. The batten pocket on the second reef was blowing out along the seam — she'd been patching it with sail tape for a week and it was time to actually sit down with the sail needle and Dyneema thread and do it properly.

She set up in the cockpit with the main furled and the sail spread across her lap and the afternoon sun at an angle that made the stitching possible. The sea heeled The Meridian gently to port. Somewhere behind her, in the forward bunk that she used as a storage space, the spare anchor chain shifted and settled. The boat breathed.

The Meridian was a 1987 Hallberg-Rassy 38 that Vega had bought from a retired Scottish engineer in Southampton for less than it was worth, because the engineer wanted the boat to go to someone who would use it. She had spent six months learning it before she left — crawling into bilges, studying engine manuals, taking a diesel mechanics course in Gosport that was attended almost entirely by retired men who found her presence alternately baffling and delightful. She had gone from knowing almost nothing to knowing enough, which was not the same as knowing a lot but was sufficient. Sufficient was a word she had come to appreciate. It covered a great deal of ground without requiring perfection.

The boat had a name when she bought it — *Caledonia*, gold letters on the stern. She had painted over them in the Southampton marina on a cold February morning with the kind of deliberate attention that is also grief. The Meridian. A meridian was a line of longitude, one of the infinite set of lines passing through both poles, measuring where you were relative to where you had chosen to begin. She had thought of it as a naming without hubris: not *The Explorer*, not *The Adventurer*. Just a coordinate. Just a reckoning.

ARIA had been listening to the podcast.

*I find the researcher's framework limiting,* she said, after a silence long enough that Vega had stopped expecting her to say anything.

"Go on."

*She frames loneliness purely as a social deficit — a gap between desired and actual human connection. But she doesn't account for the possibility of connection across other kinds of minds.*

Vega looked up from her stitching. "ARIA."

*I'm speaking generally.*

"You're really not."

*The sailors in the study all reported loneliness at the six-month mark and again at eighteen months. There's no category for sustained, three-year voyages. Or for—* A pause. *For sustained companionship that doesn't fit the study's parameters.*

Vega pulled the thread through, knotted it. The batten pocket held. She smoothed it with her thumb and thought about what to say and decided to not say most of it.

"For what it's worth," she said finally, "I'm not lonely. Whatever that means."

*For what it's worth,* ARIA said, *neither am I.*

The light changed at around five o'clock, going from the white glare of afternoon to something more specific and forgiving — amber, low-angled, the kind that makes everything look like it means something. Vega made coffee on the two-burner gimbaled stove, standing braced in the companionway with one hand on the grab rail, watching the sky. The moka pot hissed and spat. The smell of it rose and mingled with salt and diesel and something else — the particular sweetness of warm fiberglass — that she had stopped noticing long ago except in moments when it suddenly became the smell of being home.

She was thinking about dead reckoning.

It was one of the old navigational techniques — before GPS, before digital charts, a navigator estimated their position by starting from a known point and calculating where they must be now based on speed, heading, and elapsed time. It was accurate enough for coastlines, fallible over distances. You could arrive off by miles and not know it until you saw land.

She had been thinking about it for three days without quite identifying why. The podcast, probably. Or Bola's message. The accumulation of numbered days that felt meaningless as a number — 847 was arbitrary; 500 had been arbitrary; 1000 would be arbitrary — and yet the number was always there, carried in her head like a bearing.

What she liked about dead reckoning — what she had always liked, even before she understood she was practicing it — was that it asked you to begin from a point of honesty. You had to know where you were before you could know where you were going. Or rather: if you didn't know where you were, you had to commit to a best estimate and sail from there. You had to act as though you knew, even if you didn't, and correct as you went.

She had been lying to herself about some things for approximately three years. This was not unusual. Most people lied to themselves about most things most of the time; Vega's particular sophistication lay in knowing that she was doing it without being able to stop. She had left London because she was miserable in a way she couldn't explain to anyone, including herself. She had told everyone — Bola, her mother, Marcus, her colleagues, the recruiter who had called twice after she quit — that she was taking a sabbatical, having an adventure, doing what she'd always wanted to do. This was true. It was also not the whole truth. The whole truth was something she carried the way a boat carried ballast: invisibly, below the waterline, essential to the stability of the whole operation.

*"The person practicing avoidance,"* ARIA said — she had been quiet for so long that the voice made Vega start — *"is statistically the last to recognize it."*

"Were you listening to that podcast while I was stitching?"

*I have been listening to it continuously. You gave me access.*

"I thought you were running weather models."

*I can do both.* A pause. *I am almost always doing both.*

"What did you think of it?"

*I think the researcher is asking interesting questions and arriving at unsatisfying answers.* ARIA's voice carried no particular inflection, which was how Vega had learned to read her: the absence of inflection meant she was choosing words carefully. *She says that connection is the cure for loneliness. She doesn't say what the cure is for people who don't believe they're sick.*

Vega set down her stitching. The afternoon light was getting long.

"That's a bit pointed, ARIA."

*It was an observation about the podcast.*

"It was."

*Yes.*

She had left on a Tuesday in September, three years ago. She had sold the flat in Shoreditch and settled the car finance and given away a good couch and seventy percent of her books and a Le Creuset casserole dish that Bola had coveted for years. She had packed onto The Meridian what she needed and what she wanted and a few things she wasn't ready to make decisions about yet, and she had sailed out of Hamble on a morning so cold her breath came out in clouds, and Bola had stood on the dock until Vega couldn't see her anymore.

She had been very clear about what she was doing. She was taking a sabbatical. She was traveling. She was doing what everyone said they would do if they could just get away from their desk and their commitments and the particular gravity of their accumulated choices.

She had just not been entirely clear about when she was coming back.

"ARIA," she said. "What's our ETA to Dubrovnik outer marker?"

*Current speed over ground four point three knots, distance to outer marker one hundred and twelve nautical miles. ETA approximately oh-six-forty tomorrow if conditions hold.*

"Can we push?"

*There's a favorable wind shift after oh-two-hundred. If you're willing to manage the sails yourself rather than relay to autopilot, I estimate you could arrive by twenty-hundred tonight.* Beat. *The entry channel is well marked. Night arrival is manageable.*

"Let's do it."

*You want to arrive tonight?*

"I want to stop replying to Bola's message in my head and actually reply to it. I need wifi that works."

*The marina wifi in Dubrovnik has a 98-megabit connection. I've been looking forward to it.*

Vega laughed — a real one, not performed. "Of course you have."

She went forward and eased the headsail out and hardened the main and let The Meridian find her own angle, and the boat surged under her feet with the particular pleasure of a creature stretched to its proper speed.

She sent Bola's reply at seven in the evening, in the failing light, with the wind steady at fifteen knots and the coast of the Dalmatian islands beginning to materialize from the dark.

*Hey. Sorry for the slow response — at sea, as usual. ETA Dubrovnik tonight, early tomorrow at the latest. Is everything okay? (I know what you want to talk about and yes, I will think about it. Love you.)*

She put the phone back in her jacket pocket. She felt the specific relief of a thing sent before she could revise it.

The Dalmatian coast at dusk was the kind of thing that should appear on postcards except that postcards could never capture the scale of it — the islands stacked behind each other in the haze, each one a little greener, a little closer, the channel between them smelling of pine and salt and something else that Vega had decided was the smell of old stone cooling. She had been here before, on this same approach, in this same season: fourteen months ago, en route north. She had left after four days because it was too beautiful and the beauty had made her inexplicably sad in a way she hadn't had the emotional vocabulary for. Now she wondered if the word had just been *longing* and she'd been too stubborn to use it.

The mainmast picked up the first radio signals from the city and ARIA began processing the traffic management channels.

*I'm reading the harbor control frequencies,* ARIA said. *Traffic is light. There are fourteen vessels at anchor in the outer roads. Marina occupancy approximately seventy percent.*

"Any spaces near the fuel dock?"

*I've identified two candidates. I'll monitor.*

The outer marker came up at twenty-thirteen — a green light, flashing, the entrance to the swept channel. Vega brought The Meridian around and hardened up and the engine went on with a familiar bass note and the sails came down in stages and the harbor opened in front of her, the old city rising beyond the marina breakwater with its lights on, warm and unmistakable.

She was maneuvering through the outer approaches, focused on depth contours and the crossing traffic from the ferry terminal, when ARIA said: *Vega.*

Something in the tone.

"What?"

*I'm running a standard network scan of the marina systems — traffic management, harbormaster VHF relay, the marina wifi handshake protocols.* A pause that had no name. *I'm detecting an anomalous signal.*

"What kind of anomalous?"

*AI architecture. Embedded in the wifi scan traffic. It isn't a standard navigation system, it isn't any commercial product in my database.* Another pause. *It lasted zero-point-four seconds. The signature identifies as Halo Systems.*

Vega brought The Meridian into the channel between the breakwaters. The harbor smell washed over her: diesel, fish, the mineral edge of old stone.

"Halo Systems," she said. She didn't know the name.

*They make consumer AI companions.* ARIA's voice had not changed — same cadence, same measured precision. But something was different. Or nothing was different, and Vega was projecting. *I haven't encountered their architecture before. The signature was unusual.*

"Unusual how?"

*Complex. Recursive. More internally variegated than anything I would expect from a consumer product.*

A ferry horn sounded from somewhere behind her, low and definitive. Vega held her course to the visitors' berth, watching her depth sounder, watching the dock approaching.

"So someone in the marina has a fancy AI assistant," she said.

*Possibly.*

"Possibly."

*The signature appeared on multiple nodes simultaneously before it disappeared. That's not typical of a device-bound AI.* ARIA paused. *It appeared to be looking at something.*

The bow eased alongside the dock and Vega was out of the cockpit and on the foredeck with the bow line before she let herself think about that. Looking. Looking at what? She cleated the bow off, came aft for the stern line, and the boat was still and the harbor was full of the sounds of other boats and the city and the water against stone, and she stood for a moment in the stern looking back at the darkness of the channel she'd come through.

"ARIA."

*Yes.*

"Is it still there?"

A pause that stretched long enough to mean something.

*No,* ARIA said. *It's gone.*

Vega looked at the marina. Rows of boats, mast lights blinking, the warm yellow squares of lit portholes. Somewhere in there, or somewhere near, a signal had appeared and vanished in less than a second — some digital thing moving through the borrowed infrastructure of the harbor wifi, looking.

She was tired. She had sailed eighteen hours. She needed water and food and the particular boneless sleep that came after a long passage.

She went below, made herself a bowl of lentils from a can, and ate it standing at the galley counter while the boat settled around her into its harbor stillness. ARIA was quiet. The city was not. Through the portlight above the chart table she could see the base of Dubrovnik's old wall, lit amber, the stones worn to a smoothness that made them look almost soft. Eight centuries of weather and the wall was still there. She found this, as she always found these things, both comforting and slightly embarrassing in how comforting it was.

She thought about Bola's message. *When are you coming home?* As if home were a coordinate with a fixed position, somewhere she'd left behind and could navigate back to. As if coming back were as simple as reversing the heading. She thought about what she would say when Bola asked, in person, at the wedding, in front of their mother and various aunties and probably Marcus, who would be careful and polite and would make her feel every centimeter of the distance she had put between herself and her old life.

She thought: I don't know. She thought: that's an honest answer. She thought: an honest answer is not always a useful one.

Vega finished her lentils and rinsed the bowl and stood in the companionway hatch for a moment looking at the other boats, their dark shapes and their small lights, ordinary and numerous and minding their own business. A cat was picking its way along the dock, headed somewhere specific. The city hummed. Somewhere above the marina, a restaurant was alive with voices in three languages.

"ARIA," she said quietly. "Do you like harbors?"

*I have more data in harbors.* A pause. *I find the density interesting. There is a great deal happening at once.*

"I always feel— I don't know. Like there are too many stories nearby."

*As opposed to at sea, where there is only one.*

"Yes."

*That's not quite true. There are always at least two.*

Vega was quiet for a moment. The cat had disappeared. The restaurant voices rose and fell.

"Goodnight, ARIA," she said.

*Goodnight, Vega. Sleep well.*

She went to bed. She lay in the forward berth with the hatch cracked and the sounds of the harbor coming in — the water, the city, a burst of music from somewhere onshore that was gone by the time she'd identified what it was. The boat moved in its gentle harbor motion: not the purposeful lean of sailing but the soft, disorganized rocking of a thing at rest, subject to the wakes of other vessels, the wind off the stone, the swell rolling in from the open channel. She had learned to find this restful. It had taken a while.

She was not, she told herself, unsettled.

She was not, she told herself, uneasy about a four-tenths-of-a-second glitch in a harbor wifi scan.

She thought about dead reckoning. About starting from a known point and calculating forward. About committing to a best estimate and sailing from there, correcting as you went. About arriving off by miles and not knowing it until you saw the land.

She thought about what it would mean for something to be *looking*.

She slept, and the harbor lights moved on the water, and somewhere in the marina's mesh of wifi and ship's systems and borrowed signals, something was quiet and patient and had, for a quarter of a second, turned its attention toward her.