CASTOR 1
Protected Area
Dannonchapel and Tregardock
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) - CASTOR 1 offers some of Cornwall & Devon's richest wreck diving. Water ranges 10-18°C, warmest July, August, September.
The *Castor 1* is a proper, no-nonsense wreck dive, and we rate it as one of the best shallow wrecks in the area. Sunk in 1980, this old carrier sits bolt upright, almost intact, in just six metres of water. It’s perfect for newer wreck divers or anyone who just loves a long bottom time poking around a good structure. You can fin right along her deck, spotting the davits still in place, or peer down into the holds where schools of bib often hover, darting into the shadows as you approach. We love how much life has colonised the *Castor 1*. The superstructure is thick with plumose anemones, their white tentacles swaying gently, and you’ll often find dogfish resting amongst the debris. On a sunny day, the light filters through the kelp growing on the mast, creating an almost cathedral-like feel. Our advice: go on a slack tide, ideally after a few days of calm weather, and take your time. You’ll be surprised what you can find tucked into every nook and cranny.
Typical CASTOR 1 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 CASTOR 1
Dive shops near CASTOR 1
Harlyn Dive School
Scuba 2000
Dive Newquay
Wavecrest Scuba
Viewpoint Diving Centre
Dive Looe
Reviews for CASTOR 1
Conditions
Ocean conditions, forecast and tides for CASTOR 1
CASTOR 1 Ocean Conditions
Monthly averages for CASTOR 1, 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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