UB 128 (POSSIBLY)
Protected Area
Swanpool
Why dive here
With 176+ marine species recorded in the area - including blue sharks, dolphins, dwarf minke whales, humpback whales and ocean sunfish (mola mola) - UB 128 (POSSIBLY) offers some of Cornwall & Devon's richest wreck diving. Water ranges 10-18°C, warmest July, August, September.
Diving the UB 128 (possibly, as the classification suggests) is less about vibrant coral and more about connecting with a moment in history. It sits shallow, just 2 metres, so it’s less a dive and more a snorkel or a free-diving exploration. We love how accessible it is, perfect for those calm summer days when you just want to get wet and see something interesting without all the gear faff. This German submarine, deliberately sunk in 1921 as part of post-war experiments, is now a skeletal frame, barnacle-encrusted and draped in kelp. You can fin slowly along its 55.5-metre length, peering into what would have been the conning tower or imagining the torpedo tubes. The light filters through the green water, illuminating curious wrasse darting in and out of the rusted hull plates, and sometimes a cheeky crab will scuttle from a dark crevice. It’s a moody, reflective experience, a silent museum piece offering a different kind of beauty than a tropical reef. We’d suggest going at high slack tide for the best visibility, otherwise, the surge can really kick up the sediment.
Typical UB 128 (POSSIBLY) Dive Profile
Illustrative profile based on site depth and type. Actual dive profiles vary - always follow your dive computer and training.
Safety Notes
Wreck site - avoid penetration without wreck diving certification. Watch for sharp metal and entanglement hazards.
Nearest Dive Centres to UB 128 (POSSIBLY)
Dive shops near UB 128 (POSSIBLY)
DiveUK
Seaways Diving
Porthkerris Divers
Karleyth Diving Ltd.
Wavecrest Scuba
Viewpoint Diving Centre
Reviews for UB 128 (POSSIBLY)
Conditions
Ocean conditions, forecast and tides for UB 128 (POSSIBLY)
UB 128 (POSSIBLY) Ocean Conditions
Monthly averages for UB 128 (POSSIBLY), sourced from Open-Meteo marine data - nearest station: Open-Meteo marine grid (50.44, -2.73) (3km away)
October Averages
Sea Temperature
17°C
62°F · Range: 15.1–17.5°C
Air Temperature
13°C
56°F
Wind Speed
8.14 m/s
15.8 knots
Atmospheric Pressure
1011 hPa
Based on 4 years of monitoring data · Data sources: Open-Meteo marine data
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