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HMS/m D1 is a First World War German U-boat of Type SM UB III class, scuttled in 1921 and now lying on the seabed off the English coast. The submarine was sunk during the First World War and subsequently salvaged, but was deliberately scuttled as part of the post-war disposal of captured German vessels under the terms of the Treaty of Versailles. The wreck represents a significant example of submarine warfare technology from the early twentieth century and serves as an important archaeological record of the conflict. As a designated ancient monument, the site is protected in recognition of its historical importance to British naval and military heritage.
HMS/m D1 is a scheduled monument protected by Historic England under reference 1472317. View the official record →
HMS/m D1 is a First World War German U-boat of Type SM UB III class, scuttled in 1921 and now lying on the seabed off the English coast. It is designated a Scheduled Ancient Monument by Historic England (NHLE) under reference 1472317.
HMS/m D1 is a Scheduled Ancient Monument, legally protected by Historic England (NHLE) — the body responsible for designating and safeguarding heritage sites in England. The official designation reference is 1472317.
Several scheduled monuments lie within 10 km, including Gomerock Tower (4.7 km), Dartmouth Castle (4.9 km), Civil War fieldwork known as Gallant's Bower (5.1 km).
This page is just one thread. A full Aubrey report pulls together 15 strands of HMS/m D1's history, each drawn from the record and mapped to the exact spot:
Every location is different. Not every section appears for every place, only what the historical record actually holds turns up in a report.
HMS/m D1 stands on Permian claystone, bedrock that formed in the Triassic. The rock here is claystone.