YMS 304
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) - YMS 304 offers some of Cornwall & Devon's richest wreck diving. Water ranges 10-18°C, warmest July, August, September.
The YMS 304 sits in relatively shallow water, just 12 metres down, making it a great option when the weather kicks up a fuss and deeper sites are a no-go. We’ve had some cracking dives here, especially when the light pushes through; the wreck itself is pretty broken up, but you can still make out the general shape of the minesweeper. It’s been down since 1944, so there’s a good layer of life on everything. Expect to see plenty of wrasse darting in and out of the metal, and we’ve often found dogfish tucked away in the more sheltered sections. It’s not a massive wreck, but there’s enough structure for a decent explore, poking around for crabs and lobsters hiding in the crevices. This site is perfect for those days when you just want a relaxed dive with a bit of history, without having to worry about deep stops or heavy currents.
Typical YMS 304 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.
Reviews for YMS 304
Conditions
Ocean conditions, forecast and tides for YMS 304
YMS 304 Ocean Conditions
Monthly averages for YMS 304, 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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