Merchant Royal
shipwreck cargo OPEN fame 4/5
English merchant ship that foundered off Land's End, Cornwall, in 1641 while carrying a large bullion cargo — contemporary accounts put it at tens of thousands of pounds in gold and silver, styling her "the El Dorado of the Sea." The wreck has never been confirmed despite modern search claims.
Scorecard
Exists
CONTESTED
band 3/5 · raw +1.75
- +1.00 · class_prior
- +0.68 · The Merchant Royal sank on 23 September 1641 off Land's End after her pumps…
- +0.07 · Period sources describe a cargo of some 100,000 pounds of gold plus silver and…
Findable now
PLAUSIBLY-FINDABLE
band 4/5 · raw +2.77
- +3.00 · technique_term
- -0.15 · In 2019 the anchor of the Merchant Royal was reportedly recovered off Cornwall…
- -0.08 · search_term
Findable (frontier)
PLAUSIBLY-FINDABLE
band 4/5 · raw +2.77
- +3.00 · technique_term
- -0.15 · In 2019 the anchor of the Merchant Royal was reportedly recovered off Cornwall…
- -0.08 · search_term
Location hypotheses
The interactive map (Leaflet + OpenStreetMap tiles) is the one part of this page that needs a network connection; the hypothesis list below is the offline-readable source of truth.
| Hypothesis | Coords | Radius | Prior | Posterior | Note |
|---|---|---|---|---|---|
| Off Land's End, Cornwall | 49.900, -6.100 | 40 km | 0.40 | — | The chronicled loss area; a large, sediment-and-current-worked polygon. |
What would it take?
No emerging or speculative technique changes the picture yet — the frontier findability band (PLAUSIBLY-FINDABLE) equals the current band. A breakthrough here would need a genuinely new capability, not just a maturing one.
Evidence ledger (3 verified facts)
-
The Merchant Royal sank on 23 September 1641 off Land's End after her pumps failed in heavy weather; survivors including the captain were rescued by her consort the Dover Merchant and gave contemporary depositions.known by 1641-12-01 · diagnosticity high · confidence 0.90↳ Wikipedia: Merchant Royal journalistic
-
Period sources describe a cargo of some 100,000 pounds of gold plus silver and coin — pay for soldiers and merchant bullion — making her one of the most valuable wrecks in the English record if the figures are near correct.known by 1700-01-01 · diagnosticity medium · confidence 0.60↳ Wikipedia: Merchant Royal journalistic
-
In 2019 the anchor of the Merchant Royal was reportedly recovered off Cornwall by a fishing vessel, but the hull and cargo remain unlocated in a broad, deep, and heavily-fished search area.known by 2019-02-01 · diagnosticity medium · confidence 0.60↳ Wikipedia: Merchant Royal journalistic
Technique matrix
| Technique | Family | Maturity | Applicability | Rationale |
|---|---|---|---|---|
| Marine magnetometer | marine | available | 3/3 | Bullion, cannon, and iron give a strong ferrous target signature. |
| Side-scan sonar | marine | available | 3/3 | Standard open-water wreck search over the Land's End approaches. |
| Deep autonomous underwater vehicle (AUV) survey | marine | available | 2/3 | Systematic AUV coverage suits the broad, deep search polygon. |
| Drift & current back-modeling | marine | available | 2/3 | Back-modeling the foundering narrows the debris field from the loss point. |
Search history (negative evidence)
| Years | Technique | Coverage | Detection | Result | Notes |
|---|---|---|---|---|---|
| 2007–2019 | side-scan-sonar | 20% | 50% | partial | Deep-water survey work in the area; anchor recovered but no confirmed hull/cargo. |