We Were Holding Station Off North Sentinel When The Sea Went Flat

I'm going to set this down the way I'd write an incident report, because that's the only way I know how to write anything. If I try to make it sound like a story I'll start rounding things off, and I've spent nineteen years being paid not to round things off.

I turned fifty in January. I work on cable ships — installation and repair, mostly repair these days. I won't name the vessel or the operator, because I signed documents saying I wouldn't and I'd like to keep working. I'll say it's a DP2 repair ship, a bit under 130 metres, and that in the last week of March this year we were working a fault on a system in the Andaman Sea. That's as specific as I'm willing to be about the job.

What I will be specific about is where we were sitting, because it matters.

We were off the north-east corner of North Sentinel Island. Seven and a half nautical miles off it, holding station, in about ninety metres of water. Outside the exclusion zone, which is five. We had our permissions in order and an Indian Coast Guard vessel had come out and looked us over two days before and gone away satisfied. I mention this because the first thing anybody says when they hear North Sentinel is "you're not supposed to go there," and no, you're not, and we didn't. Nobody on that ship had the slightest interest in going near it. The people who live there have been clear for about sixty thousand years that they want to be left alone, and the general feeling on board was that they've earned it.

But you do look at it. You can't not. It sits there on the horizon as a low dark line with a bit of green on top, and at night it is completely black. No lights. Not one. In a part of the world where every scrap of land has a phone mast and a generator and somebody's television on, that island is a hole in the map. Our second mate used to say it looked like a bit of sea that had gone hard. You'd catch people on the bridge wing just looking at it, the way you'd look at a fire.

The job we were on was slow. We'd done a grapnel run, cut the cable, recovered the eastern end and buoyed it off, and we were waiting on first light and a bit of the swell dropping to go and get the other one. That means a night of nothing. The ship holds herself on the thrusters, the generators run, and everyone who isn't on watch is asleep or pretending to be. I'm not deck crew — I'm on the engineering side — but I keep bad hours and I've never been able to sleep through the last part of a night, so I'd got in the habit of going up to the bridge with a coffee about four and standing out on the wing until the sky started going.

That morning I make it about a quarter to five. The sea was as flat as I've seen it out there. There was a long low swell coming up from the south-west that you could feel in your knees but couldn't really see, and the surface was that oily, dented look you get in the pre-monsoon when there's no wind at all. The sky in the east had gone from black to a sort of dirty grey, the way it does about forty minutes before the sun. You could just about make out the island as a shape rather than an absence.

I saw the light with the naked eye, and my first thought was a fishing boat, and my second thought was that there shouldn't be one there.

It was low. Not on the horizon — above it, but not far above, and off to the left of the island's northern point from where I was standing. It was a steady sort of amber. Not blinking, not flashing, no red and green, nothing that belonged on anything I know that floats or flies. And it wasn't moving the way a boat moves. A boat at that distance has a rhythm to it, it lifts and settles, the light dips. This didn't dip. It sat.

I want to be honest that at this stage I wasn't excited. I was mildly annoyed, because if there was a boat inside the zone that was a problem and it was going to mean paperwork. I put my head in the bridge door and said something to the second mate, and he came out with the binoculars.

I'll call him V. He's Ukrainian, he's been at sea longer than I have, and he is the least dramatic human being I have ever met. He looked at it for a while and said, in the flat way he says everything, "That's not a boat."

Then he went in and looked at the radar and said there was nothing there, and then he stood looking at the radar for longer than a man stands looking at a radar when there's nothing on it. He told me later he'd had two returns in about a minute and a half that he'd have written off as clutter if he hadn't been looking out the window at the same time.

We had the Steiners, the 7x50s that live on the bridge, and I had them for a good couple of minutes before it changed range, and this is the part I've gone over the most, so I'm going to be careful with it.

It was a disc. I'm aware exactly how that sounds. I know that saying "flying saucer" in the year 2026 puts you in a particular category of person and I've thought about whether to use the word at all. But I'm not going to describe it as anything other than what it looked like, because the whole point of writing this down is that I saw a thing and I want to know what the thing was.

It was not the Hollywood shape. There was no dome on top, no windows, no ring of coloured lights. It was two very shallow bowls put together rim to rim — much flatter than you'd draw it, more like a lens, thickest through the middle and tapering out to an edge that looked genuinely thin. The rim was the clearest part of it. It had a hard, definite edge, and that edge is the thing that stops me being able to talk myself out of this, because haze and light and cloud and mirage do not have edges like that.

The colour was dull. Really dull. That's the detail I keep having to defend to people, because everyone expects chrome. It was the colour of wet slate, or unpolished pewter, or a stone you've just taken out of a river. It didn't reflect the sky and it didn't reflect the water. The amber I'd seen from a distance wasn't a light mounted on it. It was an area on the underside, roughly central, that was a warmer colour than the rest, and the way I've described it to the two people I've told properly is that it looked like the ring of an electric hob about a minute after you've turned it off. Not a beam. Not a spotlight. There was nothing coming out of it. It was just warm-looking.

And it wobbled. That's the word V used and it's the right one. Not a spin, not a tumble. It rocked slightly on its own axis, side to side, the way a coin does in the last second before it lies flat on a table. It did that the entire time we watched it. I've since found out that's a thing people report. I'd rather I hadn't, except that I said it out loud to V before I'd read a word about any of this.

It came closer while we were watching. Not fast. It covered what I'd guess was half the distance between us and where it started, over maybe a minute and a half, and then it stopped and sat again. I'd put it at a mile and a half out, three or four hundred feet up. I'm not going to give you a size, because anyone who tells you they can size an unknown object at an unknown distance over water is telling you a story. It looked bigger than a helicopter. That's all I'll commit to.

Two things happened then that I hadn't expected, and it's these two that I've been chewing on since.

The first is that it made no noise. I know that's in every one of these accounts and I know how it reads. But you have to understand what a working ship sounds like. We had generators running, we had thrusters going to hold us, there's a permanent hum you stop hearing after a day and only notice when it stops. So it's not that there was silence. It's that there was a thing hanging in the air a mile and a half away, close enough to have an edge, and it was contributing nothing at all to the noise of the world. Anything that holds itself up over the sea does it by pushing air down and pushing air down is loud. I've stood under enough helicopters.

The second is the water underneath it.

There was a circle of flat sea below it. Not choppy, not disturbed — flat. Flatter than the rest, and the rest was already flat. It looked like someone had poured oil on it. It had a soft edge, no clear line, and it moved when the object moved, and it was there the whole time. There was no spray, no ripple travelling outward, no downwash pattern, nothing you'd see under an aircraft. If anything it looked less alive than the water around it. Damped. Like the swell had been switched off inside that circle.

I have gone at that one detail with everything I've got and I cannot make it work. Wind shadow doesn't do that with no wind. A slick doesn't move. I don't have an explanation for the flat water and it's the flat water, not the shape, that keeps me up.

Somewhere around here the ship started complaining. The DP system threw a position-reference discrepancy alarm, which is not unheard of but is not nothing either, and V went to it. The gyro repeater on the wing had gone off by an amount I didn't note down at the time and wish I had. What I did note, because I went and physically looked at it, was the magnetic compass in the binnacle, which was sitting about twelve degrees off where it had been. I checked it twice because I assumed I was misreading it in the dark. The ETO, who'd come up by then because something in the engine control room had alarmed at him, put his hand on the rail and said the hair on his arms was standing up, and I told him that was adrenaline, and he said maybe, and neither of us believed either version.

The VHF had a hiss on it. Just a soft carrier hiss, on channel 16, for as long as this went on.

I went and got my camera at about this point, which took me under a minute, and which I have kicked myself about ever since, because a minute is a long time.

I keep a Nikon on board with a 70–200 on it. It's for birds. That's not a joke — there's not much to do on a repair job and I've got a list going back six years. So I had a proper camera with a proper lens, on a ship, at the exact moment I needed one, which is the single piece of luck in this whole thing. I shot RAW plus JPEG because that's how it lives, and I fired off bursts, and I didn't look at the back of the camera once, which I'm glad about, because I'd have stopped to look and missed it.

It left while I was shooting.

I want to describe this accurately and it's hard. It didn't accelerate. Acceleration is a thing you can watch happen — something gets faster and you can follow it getting faster. This did not do that. It tilted, maybe fifteen or twenty degrees, up and to the east, and then there was a moment where it was a point of light much further away, and then there wasn't a point of light. If you made me guess I'd say the whole thing took under a second and I'd also say I don't think "took" is the right verb for what I saw. V, who was watching it and not photographing it, says it went "in one step." He also says it went east-north-east and climbing, and I'll take his word over mine because he's the navigator.

Then it was five o'clock in the morning and we were standing on a bridge wing looking at an empty sky.

I thought the whole thing had lasted four minutes, maybe five. The camera says the first frame and the last frame are seven minutes and some seconds apart, and I'd already been watching it for a while before I went for the camera. So call it ten, twelve minutes. I'd have sworn on paper it was half that. I don't know what to do with that. It's not missing time, it's the opposite — I've got more time than I remember using.

Five of us saw it. Me, V, the AB who was on lookout, the ETO, and one of the splice team who'd come up for a smoke at the wrong or right moment and stood there with an unlit cigarette in his hand for the whole thing.

Nobody wanted to talk about it. That surprised me more than anything else. I'd expected a morning of noise and instead we had breakfast and nobody said a word about it, and when I raised it with one of them at lunch he said "yeah" and looked at his plate. V logged it properly and dryly: unidentified light observed bearing 072, no radar contact, DP reference alarm, magnetic compass deviation noted. The Master, when he was told, was decent about it — said log the facts, log the alarms, don't speculate in the deck log, and if anyone asks you saw an unidentified light. Which is exactly right and exactly what I'd have said in his chair.

Now, the photographs.

There are sixty-one frames. The great majority of them are worthless — grey on grey, motion blur, a smudge you'd have to be told about. My honest count is that nine or ten of them have something in them with a definable edge, and that two of them are properly interesting. In one of those two you can see the lens profile and the taper to the rim, and there is something going on under it that I'm not going to characterise because I don't want to put the idea in anyone's head before an expert has looked at it. I've had the raw files off the card and I have not touched them. No crop, no levels, nothing. They're sitting exactly as the camera wrote them, with the EXIF intact, which matters more than the pictures do.

They've gone for analysis. A friend of mine works in remote sensing and put me on to someone who does image forensics properly — sensor noise, compression artefacts, that whole world — and both the raws and a copy of the card image went off in the middle of May. I'm not naming them until they've come back to me and told me I can, because it's not fair to attach somebody's name to this before they've said a word.

I'll post them when the report's back. I've been asked why I'm sitting on them and the answer is that if I put them up now, everyone decides what they are inside ten seconds and then the analysis is just noise. If it comes back and says these are consistent with an aircraft at range, or a lens artefact, or a drone, I'll post that too, and I'll say I was wrong.

Here's what I've been able to knock out myself, for whatever a marine engineer's opinion is worth.

Drone, no. Not at that apparent size, not silently, not with nothing on radar, and not with a flat circle of sea underneath it. Aircraft, no — wrong shape, wrong lack of noise, wrong departure. Balloon, no; nothing was moving and there was no wind for it to move in. Lens flare and reflection, no, and I'd like to be firm about this one: five people saw it with the naked eye before a camera came out of a bag. Mirage or superior refraction, which is the serious sceptical answer and which does happen in those waters in that season — I can't disprove it, but a mirage stretches and smears and doesn't hold a hard rim, and I don't believe a mirage swings a magnetic compass twelve degrees.

Military, some country's, doing something classified in a sensitive stretch of water. That's the explanation I can't get rid of and I want to be straight that I think it's the most likely mundane one. I don't have the clearance or the knowledge to say what anybody's flying now. If it turns out that's what this was I'll be relieved and slightly disappointed, and I'll still want to know how they did the thing with the water.

That's the account. I'm not claiming it was anyone from anywhere. I don't have a theory and I'm suspicious of people who came back from something like this with one. What I've got is: I stood on a bridge wing seven and a half miles off an island nobody is allowed to visit, and for about ten minutes a grey disc hung over the sea without making a sound while the water underneath it went still and the compass wandered, and then it wasn't there.

I've done four trips since. I'm still going up at four with a coffee. I tell myself it's the habit.

It isn't the habit.