PORTSDOWN
Protected Area
Portsmouth Harbour
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) - PORTSDOWN offers some of Cornwall & Devon's richest wreck diving. Water ranges 10-18°C, warmest July, August, September.
The wreck of the ferry Portsdown, formerly the Ryde, is a fantastic shallow water dive off the Cornish coast. We love a wreck that tells a story, and this one, scuttled in 1941 to block an enemy invasion, certainly does. At a maximum depth of 2m, it's less about dramatic plunges and more about intimate exploration. Paddling over the remains, you can still make out the distinctive paddle steamer hull, the two boilers standing proud, now encrusted with plumose anemones swaying gently in the surge. Look closely for spider crabs scuttling amongst the plates, and shoals of juvenile pollack darting through the rusted structure. It’s a site that rewards patience and a keen eye, perfect for a long, relaxed snorkel or a shallow dive on a calm day. We’d suggest going at slack water to avoid strong currents, making it easier to appreciate the history and the surprisingly rich life found in such shallow water.
Typical PORTSDOWN 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 PORTSDOWN
Dive shops near PORTSDOWN
In2 Diving
Andark Diving
Sussex Diving & Leisure
Mulberry Marine Experiences CIC
Abyss Scuba School
Sunken Dreams Scuba Diving Academy
Reviews for PORTSDOWN
Conditions
Ocean conditions, forecast and tides for PORTSDOWN
PORTSDOWN Ocean Conditions
Monthly averages for PORTSDOWN, 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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