SS Irma
Protected Area
South of the Isles of Scilly
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) - SS Irma offers some of Cornwall & Devon's richest wreck diving. Water ranges 10-18°C, warmest July, August, September.
Dropping onto the SS Irma, you're immediately struck by the scale of this wartime relic. This Norwegian merchant ship, sunk in 1944 under a cloud of controversy, lies in pieces, but enough remains to make for a compelling dive. We found the stern section particularly interesting, still holding a good deal of its shape and providing plenty of nooks for conger eels to lurk. Schools of bib and pollock often swirl around the superstructure, and the occasional dogfish might be spotted nosing through the debris. It’s a dive that rewards careful exploration, perfect for divers who appreciate a bit of history along with their marine life.
Safety Notes
Wreck site - avoid penetration without wreck diving certification. Watch for sharp metal and entanglement hazards.
Reviews for SS Irma
Conditions
Ocean conditions, forecast and tides for SS Irma
SS Irma Ocean Conditions
Monthly averages for SS Irma, 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
Plan & book
Ways to dive Cornwall & Devon, from day trips to liveaboards.
Day trips & courses
via GetYourGuideGuided dives, courses and snorkel trips with instant booking.
Find dive trips in Cornwall & DevonPlaces to stay
via Booking.comHotels and dive resorts near Cornwall & Devon.
Search stays in Cornwall & DevonDive insurance
Most travel insurance excludes or limits scuba. Check what you need before you go.
Dive insurance explainedPartner links: we may earn a commission if you book, at no extra cost to you. How we make money
Where to Stay near SS Irma
Prices from Booking.com. We may earn a commission at no extra cost to you.