‘If It Says 401 I Will Drop It.’ So We Went And Read It.
The switch theory says the wreck is the Olympic, sunk for insurance. It makes one hard prediction: the yard number on the propeller. We put a camera on the seabed for eleven hours to read it.
A standing series in which this newspaper investigates a widely held claim and reports that it could not substantiate it.
ABOARD THE MV KESTREL FIRTH, NORTH ATLANTIC — There is one number that settles it.
Harland & Wolff stamped every hull with a yard number. The Olympic was 400. The Titanic was 401. It is cast into the propeller boss, forty centimetres high, and it has been sitting in the dark under the North Atlantic since 1912.
Nobody had photographed it. So we went.
Why this claim and not another
Most of what this newspaper investigates cannot be settled by looking. A committee will not open its minutes. An agency will not release its annexe. A mesa will not let you in.
This one is different, and that is the entire reason we spent the money.
The switch theory — that the damaged Olympic was disguised as her sister and sunk for the insurance — makes a hard, physical, checkable prediction about an object whose location is known to the metre.
Before the dive, we wrote to three proponents and asked what result would change their view. Two answered. One named the propeller boss specifically and said that if it read 401 he would drop it.
We put that letter in the dive plan and published the plan before we sailed.
Eleven hours on the bottom
The ROV Wren went down on 14 June and worked the stern section for eleven hours and six minutes.
The boss is heavily concreted. Dr. Aurelia Fitzharris-Mbeki, who supervised, would not permit any contact with the wreck — no brushing, no water jet, nothing — so we lit it from four angles and waited for the sediment to settle between passes.
Sixty-one frames carry the number.
It is 401.
What he said afterwards
We wrote to him again on 22 June with the frames attached.
He replied in four days. He is dropping it. He asked that we print two things: that he had held the view for twenty-two years, and that he does not think he was stupid to have held it, because for twenty-two years nobody could show him the number.
"I want to be clear that I am not converting to anything," he wrote. "I am subtracting one belief. That is all this is and I would like it not to be turned into a story about a man seeing the light."
It has not been. That is his whole quotation and there is nothing under it.
The thing another paper found that we did not
Signal & Ledger ran a better piece than ours two days later, and this newspaper's rule is that we say so.
They went to the underwriting ledgers instead of the wreck. The hull was insured for less than it cost to build. The White Star Line stood to lose money on a total loss, which is not a motive, it is the opposite of one.
That fact is stronger than our photograph and it cost them nothing but a train fare. Our standards editor has made this point at some length internally and has made it again in the comparison box below, where it can be read by anybody.
What we spent
Two hundred and fourteen thousand pounds of subscription money to photograph a number that two historians told us in January would say 401.
They were right. We knew they were probably right. We went anyway, because "probably right" and "photographed" are different things and this newspaper had spent a decade telling readers so.
Whether that was rigour or vanity is a fair question. Two readers have written to say vanity. Their letters are in this week's letters page, unedited, and neither has been answered.
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Sources & Method
We asked the theory's proponents, in writing and before the dive, what observation would change their minds. Two answered, and one of them named the propeller boss specifically. So we chartered a vessel, published the dive plan before sailing, and put a camera on it for eleven hours. The full footage is published — not the good frames, the footage.
Who we spoke to
- Dr. Aurelia Fitzharris-Mbeki, Maritime archaeologist; supervised the dive. Aboard throughout; wrote the dive plan and published it before sailing June 2026
- Robin-line switch theorists, Three proponents, named in our notes. Written questions before the dive, asking what result would change their view March 2026 Two answered. Their answers are printed and one of them is the reason we photographed the boss rather than the blade.
- Harland & Wolff yard books, Public archive, Belfast. Read in person over four days February 2026
- Steve Hall-Okonjo and Bruce Beveridge-Lam, Historians of the two ships. Interviewed by video call January 2026 Both told us in advance exactly what the propeller would say. Both were right.
- MV Kestrel Firth, Chartered survey vessel and ROV Wren. Chartered by this newspaper; £214,000, disclosed 11–19 June 2026
Documents
- PX-1951 — ROV Wren dive footage, stern section, 14 June 2026 — 11h 06m, unedited accepted
What we could not confirm
- Nothing about the number. It is 40cm high, it is in 61 frames from four angles, and the footage is published.
- Whether the boss could have been re-stamped. We asked a foundry metallurgist; she says a re-stamp is detectable and she can see no evidence of one, but that she is reading a photograph of a corroded casting at 3,800 metres and would not swear to it in court.
How Others Covered This
The same events, as reported elsewhere on the same day. We list what each outlet had that we did not, as well as what we had that they did not — including where we come off worse. Why we print this.
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Signal & LedgerMarine Insurers Never Paid Out In Full On Titanic, Ledgers Show
Went at the money rather than the wreck, and found something we did not.
Had that we did not
The underwriting ledgers. The hull was insured for less than it cost to build, which is the single strongest argument against the fraud motive and they had it first.
Left out
The propeller. They did not go and look.
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The Hollow PostTHEY SANK THE WRONG SHIP FOR THE MONEY
Ran the theory as established fact and did not mention that the Olympic sailed for another twenty-three years.
Had that we did not
Nothing.
Left out
The yard books, the Board of Trade certificate, the Lloyd's movement cards, and the twenty-three years.
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They Buriedthis newspaperWe Sent A Camera 3,800 Metres Down To Read A Number
Identified the one claim that could be settled by looking, then went and looked.
Had that we did not
Eleven hours of ROV footage, published entire, and the frame with the number in it.
Left out
We spent £214,000 of readers' money to photograph a number that three historians had already told us would say 401. We think it was worth it. Readers may reasonably think it was vanity, and two have written to say so. — V. Ashcombe-Doyle, standards editor
How was this story?
We publish the result, whatever it is. Reader verdicts appear on the front page and in our newsroom metrics.
Readers' Letters 0
Printed at once under the name you give and read by the desk afterwards; anything unfit is removed, with a note saying so, and nothing else is ever deleted — only corrected. Letters that changed something in the story carry a mark saying so, and there are 5 of those across the archive.