Deadman’s Island, Kent

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eadman’s Island is a low mudbank in the Medway estuary, opposite Queenborough on the Isle of Sheppey, and nobody is allowed to set foot on it. Buried in it are men and boys who died aboard the prison hulks moored off Sheppey more than two hundred years ago, and the sea is slowly taking their coffins back.

It is roughly fourteen miles west of us as the crow flies, and — despite what you may have been told — you cannot see it from Whitstable. Sheppey is in the way. But the water it sits in is the same water we look out at, and the story has a Whitstable end to it that almost nobody tells.

Where is Deadman’s Island?

It lies in the estuary of the River Medway, close to where the Swale flows into it, among the tidal sandbanks on the southern side. It is about 1,200 metres long and 200 metres wide, separated from the mainland at Chetney Marshes by a narrow channel called Shepherd’s Creek. Queenborough sits about a kilometre away across the West Swale.

It is not really one island. Tidal channels cross it, so at high water it breaks up into several smaller ones.

Why is it called that, and how do you spell it?

Three ways, depending on who is writing — and the maps settle which is oldest.
Deadmans Island, one word and no apostrophe, is how Ordnance Survey has always written it. It appears in exactly that form on the six-inch survey of 1862–63, on the revision of 1896, and again on the revision of 1906. Forty-four years, three surveys, one spelling. Modern OS-derived mapping still renders it the same way.

Deadman’s Island, with an apostrophe, is the form the BBC uses and the one most current writing follows. Dead Man’s Island, in three words, is the older printed form you find in local newspaper columns, and the one you still hear from people who grew up around the estuary.

None of them is wrong, and the name itself is straightforwardly descriptive: it is where the dead were put.

Can you visit Deadman’s Island?

No. It is completely out of bounds to the public.

The island is owned by Natural England and leased to two people. It is a Site of Special Scientific Interest, recognised as internationally important under the Ramsar convention, and it is a significant breeding and nesting site for birds. When the BBC’s Inside Out South East went across for a programme broadcast in January 2017, they needed the leaseholder’s permission, and they went outside the bird breeding season.

There is no boat trip, no open day and no permitted landing. Anyone offering to take you there is offering something they shouldn’t.

Who is buried there?

Men and boys who died of contagious disease aboard the prison hulks — floating prisons moored off the Isle of Sheppey — more than two hundred years ago. They were buried in unmarked coffins under six feet of mud. The island was used for the infectious dead precisely so that whatever killed them stayed away from the ships and from the towns.

Not one of them is named. There are no records tying a body to a person, and there almost certainly never will be.

How many is genuinely uncertain, and it is worth being straight about that. The BBC’s own account describes the remains of dozens of people. Other accounts, including Wikipedia, say more than two hundred were recorded in 2016. No survey has ever been published — the BBC noted that it isn’t known whether archaeologists have ever properly examined the site, because nothing has been made public. Kent archaeologist Dr Paul Wilkinson went across with the programme and confirmed that the bones were human, but that is confirmation, not a count.

So: hundreds is possible. Hundreds is not established. Anyone giving you a precise figure is repeating someone else’s guess.

What were the prison hulks?

Decommissioned warships, stripped of masts and rigging, moored in the estuaries and used as prisons. They were meant to be a temporary answer to overcrowded gaols after the American colonies stopped taking transported convicts, and they lasted for decades. Men awaiting transportation to Australia were held aboard them; so were prisoners of war.

Conditions were foul and crowded, and disease moved through them quickly. Anyone too ill to be shipped out simply stayed, and a good many of those died where they lay.

The ships most often named in connection with these burials are named in secondary accounts only, without a source that ties a particular hulk to a particular grave. We have left them out rather than repeat them as fact.

What Whitstable has to do with it

This is the part that belongs to us.

During the Napoleonic wars, Whitstable men helped French prisoners of war escape from the very hulks in the Medway that supplied Deadman’s Island with its dead. Local histories of the town record it plainly enough. Captured French officers living on parole could sometimes buy their passage home if enough money came from their families in France. Ordinary prisoners had no such arrangement, and what they escaped from was very much worse.

The town’s own accounts describe men coming off the hulks sick, in rags, sometimes with nothing on at all, carried up the Thames aboard the hoys that worked the coast, and landed near the Blue Anchor. From there the tradition holds that they were taken up to Pye Alley Farm on the Turnpike Road, fed and clothed, and then moved across country by back lanes to hide in Convicts Wood, supplied from Brooklands Farm.

We would treat that route as local tradition rather than settled record — it is the kind of detail that gets tidied and improved in the retelling, and we have not found it in a primary source. The broader point stands, and it is a striking one. The men buried in that mud and the men who got away from those same ships were, for a few hours, in the hands of people from this town.

What the old maps show — and what they don’t

Ordnance Survey mapped this island three times: surveyed in 1862–63, revised in 1896, revised again in 1906. The first of those was made within living memory of the burials, when there would still have been people at Queenborough who remembered them happening.

On none of the three is there a burial ground.

What the surveyors recorded was mud, saltings, the high water mark of ordinary tides, a parish and borough boundary running across the island, and a beacon. That is the whole inventory. No enclosure, no graves, no name for the place where anyone lay.

That is not evidence that nobody is buried there — it is worth being clear about the difference. Ordnance Survey recorded what was visible and worth surveying, and unmarked coffins under six feet of mud on a tidal flat are precisely what a surveyor would neither see nor be asked to note. What the maps establish is that the burials left no surface trace anyone thought worth recording, at a time when the memory of them was still fresh.

There is one thing on the island the surveyors did draw and never explained. A small circular feature, in the same position on every edition from 1862 to 1906, marked with the hachuring used to show a change in ground level — and unnamed on all three. Whatever it was, it was there for at least forty-four years, and the Ordnance Survey never once wrote down what it was.

Why are the coffins showing now?

Rising sea levels and coastal erosion. The mud that covered them is being washed away, and what is left sticks out of the ground. It is visible only at low tide.

One correction worth making, because it circulates constantly: the wooden posts across the island are not grave markers. They are almost certainly there to mark the island and to slow the erosion, whatever else you may read.

Will the remains be reburied?

Probably not, and not because nobody cares. The remains are being carried out into the estuary and broken up as they go, which makes recovering and reburying whole bodies close to impossible.

There is a second correction here, and it is one that half the internet gets wrong. During the Napoleonic wars, French prisoners who died at Chatham were buried on the marshes there; when erosion began to expose them they were moved to St Mary’s Island, and later moved again to St George’s at Chatham Maritime when that land was redeveloped. That happened at Chatham. It did not happen at Deadman’s Island, and the two are routinely merged into one story.

What the stories say

Queenborough children grew up being warned off the place, and the warnings were vivid. Red-eyed dogs that broke open the coffins. Bodies buried without their skulls. Something out there that fed on the heads of the dead. People in the town have described hearing a howl carrying across the water at night.

None of this is history, and we would not pretend otherwise. But it is real folklore, told for generations, and it did one useful thing: it kept people off an island full of unburied dead. Whether that was the intention or not, the stories worked.

Where to see it from, and what to see instead

You cannot see the island from Whitstable, and you cannot land on it from anywhere. The nearest legitimate view is from the Queenborough waterfront, looking west across the West Swale, and even then it is a low grey line rather than a spectacle.

Closer to home, the estuary keeps its own reminders of what the sea gives back. Dead Man’s Corner at the harbour carries a name that comes from the same blunt tradition, and the story of the Chance is what it looks like when the sea returns something rather than takes it. If it is the smuggling history that interests you, that is in our guide to the Whitstable alleys.

If you know more about the Whitstable end of this — the escape route, the farms, or Convicts Wood — or if we have got something wrong, we’d love to hear.