Wreck
down to 18 m
Glen Strathallan
A ship deliberately sunk for divers, now a 15 m debris field around an upright boiler with cuttlefish, tompot blennies and octopus.
- Open Water
- Cuttlefish
Experienced≤40 m
City of Westminster (Runnel Stone)
Dive site in Plymouth & South Cornwall, United Kingdom
A 1923 wreck on the Runnel Stone off Land's End, plastered with miniature plumose anemones and home to huge ballan wrasse.
- Usual dive
- 26 m
- Deepest point
- 50 m
- Level
- Experienced
- Best months
- Jul–Oct
- Entry
- By boat
- Current
- Strong
The story
On 8 October 1923 the City of Westminster struck the Runnel Stone in heavy fog so hard that she knocked 6 m off its top, then broke in two and sank.
Source: divernet.com
The dive
A wreck and reef dive from a boat.
Who it's for
Experienced≤40 mSource: divernet.com
Recommended minimum: Experienced (Deep Specialty, N3).
- DepthThe usual dive goes deeper than lower certifications allow.
- CurrentCurrent can be strong; you need good air management and buoyancy.
- Strong current: dive with a local guide and carry a surface marker buoy.
- The site goes deeper than 40 m: Experienced divers stay above 40 m.
Conditions
- Dive type
- Wreck, Reef
- Environment
- Open water
- Water
- Sea water
What you might see
- Conger eel
Season in Plymouth & South Cornwall
- J
- F
- M
- A
- M
- J
- J
- A
- S
- O
- N
- D
- Best
- Good
- Possible
- Closed
- Not documented yet
Best months: Jul–Oct.
Source: blog.padi.comWhere is Plymouth & South Cornwall?
The point shows the Plymouth & South Cornwall area, not the exact dive site.
More dives in Plymouth & South Cornwall
Wreck
down to 30 m
HMT Elk
A small 1902 trawler sunk in 30 m, compact enough to swim around twice, with congers and lobsters in the wreckage.
- Advanced
- Conger eel
Kelp forest
down to 20 m
Porthkerris Cove
A beach dive on the Lizard where gullies and kelp shelter anemones, urchins, cuttlefish and occasionally John Dory.
- Open Water
- Basking sharks
Wall
down to 40 m
Eddystone Reef
Offshore reef 19 km south of Plymouth where white shell gravel, jewel anemones and pink sea fans often meet excellent visibility.
- Advanced
Wreck
down to 24 m
HMS Scylla
A 113 m Leander-class frigate placed on the seabed in 2004 as an artificial reef, now well colonised and home to sea fans.
- Advanced
Wreck
down to 29 m
SS Mohegan (The Manacles)
The best-known and most dived wreck on the Manacles, broken among rocks covered in gorgonian fans, dead man's fingers and jewel anemones.
- Advanced
About this page
Values marked “Estimated” come from our original catalogue and are being checked against published sources one by one. Sourced values link to where they come from. Conditions change with the season, the weather and the tide: confirm with a local dive centre before you dive.