DERNA (PROBABLY)
Protected Area
South Dorset
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) - DERNA (PROBABLY) offers some of Cornwall & Devon's richest wreck diving. Water ranges 10-18°C, warmest July, August, September.
Diving the *Derna* is a proper plunge into history. This old steamship, resting upright at 39 meters, is a substantial wreck, and we reckon it’s one of the best deeper historical dives in the area. Dropping down, you’ll find the bow section still quite intact, often shrouded in a shoal of pout whiting. We love finning past the main hold, which is now a haven for crabs and lobsters tucked into every crevice. Our favourite part is navigating towards the twin boilers, massive cylinders encrusted with dead man's fingers, where conger eels have set up shop. The stern is more broken, but gives a great sense of the sheer power of the triple-expansion engine. Visibility can be hit or miss, but on a good day, with a bit of ambient light, the scale of the *Derna* is truly impressive. This is a dive for those comfortable at depth, who appreciate the silent stories a ship tells after a century on the seabed.
Typical DERNA (PROBABLY) Dive Profile
Illustrative profile based on site depth and type. Actual dive profiles vary - always follow your dive computer and training.
Safety Notes
Deep dive (39m) - monitor air consumption closely. Advanced certification recommended.
Wreck site - avoid penetration without wreck diving certification. Watch for sharp metal and entanglement hazards.
Always perform a 3-minute safety stop at 5m before surfacing.
Nearest Dive Centres to DERNA (PROBABLY)
Dive shops near DERNA (PROBABLY)
Divers Down
Mayim Mermaid Academy
Dorset Diving Services
Dive Beyond Limited
Old Harbour Dive Centre
TAL Scuba Ltd.
Reviews for DERNA (PROBABLY)
Conditions
Ocean conditions, forecast and tides for DERNA (PROBABLY)
DERNA (PROBABLY) Ocean Conditions
Monthly averages for DERNA (PROBABLY), 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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