NBM Dive Site Resource
SM U-78
West Jutland offshore, Denmark offshore, Denmark
This World War I Type UE I minelayer completed twelve patrols. Diver-identified research wreck at about 47 m. Discoverers withhold the exact location; public access is not established.
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Featured Hero Photograph

Aquatic life at this dive site
What divers may encounter
Three reviewed connections are featured here. Sightings vary by season, conditions, and chance, so they are never guaranteed.
Aquatic life research in progress
NBM is reviewing a likely local species for this position.
Aquatic life research in progress
NBM is reviewing a likely local species for this position.
Aquatic life research in progress
NBM is reviewing a likely local species for this position.
Site media
Photographs
Three views rotate from the published gallery on each visit.


Contributor media
Dive videos
Three featured video positions are reserved on every profile.Regional location and nearby land
Location map
Regional coastline overview only. The discovery account withholds the exact wreck position; no precise pin or inferred navigation fix is shown.Map data © OpenStreetMap contributors
Recent field observations
Diver-reported temperatures
Automatically checked observations from dives during the past 14 days. Three reports are visible at a time; scroll for more.A report that passes the automatic checks will appear here with the dive date, diver’s display name, and temperatures at each depth.
Reports are automatically checked for plausible dates, depths, and temperatures. They are observations, not forecasts; confirm conditions before diving.
Why divers know this place
Highlights
World War I Type UE I minelayer identified by divers in 2015 after an ROV discovery.
Shipwreck-only module
The wreck
This section appears only on shipwreck records and brings the vessel, its loss, present condition, access, and responsible wreck-diving considerations into one place.
- Vessel type
- German Type UE I submarine
- Year built
- 1916 (launched)
- Year sunk
- 1918
- Cause of loss
- Torpedoed by the British submarine G2 in the North Sea on 27 October 1918, with all forty aboard lost.
- Present condition
- Documented research wreck; see discovery team report. Current condition is not independently verified.
- Penetration guidance
- External historical context only; no permission for penetration or recovery.
Before you arrive
Access notes
Diver-identified research wreck at about 47 m. Discoverers withhold the exact location; public access is not established. Published for historical and expedition context. No public charter availability, entry point, or access permission is implied. Respect the naval grave and contact the relevant local authorities and qualified support before any visit.
Plan within your training
Conditions and hazards
Offshore conditions, depth and decompression exposure, currents, entanglement, damaged metal, unstable structure and possible ordnance. Do not enter, disturb remains, or remove objects.
Independent resource notice
This record is a starting point for independent verification. Access, closures, moorings, weather, currents, depth, visibility, operator availability, and site conditions can change without notice. Confirm current information with the responsible operator, property owner, managing authority, or another qualified local source before planning or attempting a dive.