P-555 (Wreck)
Protected Area
South of Portland
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) - P-555 (Wreck) offers some of Cornwall & Devon's richest wreck diving. Water ranges 10-18°C, warmest July, August, September.
The P-555, a former Admiralty fuel barge, often gets overlooked for some of Cornwall’s more dramatic wrecks, but we think that's a mistake. We love its compact size and how well-preserved it is, sitting upright on a sandy seabed in just 13 metres of water. Dropping onto the deck, you’ll find yourself navigating through the superstructure, with schools of pollack swirling around the remaining winches and machinery. What makes the P-555 a standout for us is the sheer density of life that has colonised every available surface. Spider crabs clamber over encrusted metal, nudibranchs graze on hydroids, and we’ve often found small conger eels peeking out from darker recesses. It’s an ideal site for anyone looking to spend a full dive exploring every nook and cranny without worrying about extreme depth or challenging currents. Our favourite trick is to explore the interior spaces, which are surprisingly open and accessible, just remember to bring a good torch to really appreciate the colours of the anemones and jewel anemonies that carpet the internal walls.
Typical P-555 (Wreck) 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.
Always perform a 3-minute safety stop at 5m before surfacing.
Nearest Dive Centres to P-555 (Wreck)
Dive shops near P-555 (Wreck)
Dive Beyond Limited
Old Harbour Dive Centre
Divers Down
Dorset Diving Services
Mayim Mermaid Academy
Reviews for P-555 (Wreck)
Conditions
Ocean conditions, forecast and tides for P-555 (Wreck)
P-555 (Wreck) Ocean Conditions
Monthly averages for P-555 (Wreck), 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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