Wreck of SMS B109 (secondary location)
Protected Area
Switha
Why dive here
With 140+ marine species recorded in the area - including blue whales, dolphins, dwarf minke whales, humpback whales and ocean sunfish (mola mola) - Wreck of SMS B109 (secondary location) offers some of Scapa Flow, Orkney's richest wreck diving. Water ranges 8-14°C, warmest July, August, September.
The SMS B109, a destroyer from the German High Seas Fleet, offers a tangible piece of history, often overlooked for Scapa’s larger battleships. We dive it for the sheer intimacy of the wreck. Lying pretty broken up, it’s not a swim-through kind of dive, but rather a chance to explore individual components. Think propellers, engine parts, and twisted metal sheets, all colonised by anemones and hydroids. Poor cod lurk in the shadows and common shore crabs scuttle across the plates. We’ve even spotted scorpionfish tucked into crevices. It’s a site that rewards a slow, methodical approach, suited to divers who appreciate the subtler details of a historical wreck and the way marine life reclaims it, rather than those chasing grand intact structures. Look closely amongst the debris and you’ll find plenty.
Safety Notes
Wreck site - avoid penetration without wreck diving certification. Watch for sharp metal and entanglement hazards.
Cold water this month (avg 13°C). Drysuit or thick wetsuit (7mm+) recommended.
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Conditions
Ocean conditions, forecast and tides for Wreck of SMS B109 (secondary location)
Wreck of SMS B109 (secondary location) Ocean Conditions
Monthly averages for Wreck of SMS B109 (secondary location), sourced from Open-Meteo marine data - nearest station: Open-Meteo marine grid (58.64, -3.16) (8km away)
October Averages
Sea Temperature
13°C
55°F · Range: 11.4–13.8°C
Air Temperature
10°C
50°F
Wind Speed
9.26 m/s
18.0 knots
Atmospheric Pressure
1005.3 hPa
Based on 4 years of monitoring data · Data sources: Open-Meteo marine data
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