PORT CHALMERS - Cornwall & Devon

Port Chalmers isn't your typical deep-sea wreck dive. It’s better, in our opinion. This sailing vessel, sunk in 1886 off the Manacles, now lies in just two metres of water, making it perfect for a snorkel or a very shallow shore dive. We love this site because it’s so accessible and yet packed with history. You can trace the outline of its 76-metre hull, even seeing bits of the original structure poking through the kelp. Imagine this: the sunlight filtering through the shallow water, illuminating the barnacle-encrusted plates of steel. Schools of juvenile pollack dart in and out of the crevices, and we’ve often spotted a grumpy crab or two scuttling across the seabed, using the wreck as shelter. It feels incredibly personal to be able to get so close to something that was once so grand, now reclaimed by the sea. For photographers, the natural light is a huge bonus, and for those who prefer not to don a full set of gear, it’s a truly rewarding snorkel. We’d suggest going at high tide for the best visibility over the wreck.

Location
Cornwall & Devon, United Kingdom, Mediterranean & Europe
Coordinates
50.033800, -5.068150
Type
wreck
Maximum Depth
2m

Marine Protected Area: The Manacles

Best Time to Dive in Cornwall & Devon

The warmest water temperatures in Cornwall & Devon occur in January, averaging 9.6°C. The coolest conditions are in December at 9.6°C.

Monthly Water Temperatures

  • January: 9.6°C (air: 7.3°C)
  • February: 9.6°C (air: 8.4°C)
  • March: 9.6°C (air: 8.6°C)
  • April: 9.6°C (air: 10.1°C)
  • May: 9.6°C (air: 12.6°C)
  • June: 9.6°C (air: 15.2°C)
  • July: 9.6°C (air: 16.6°C)
  • August: 9.6°C (air: 17.1°C)
  • September: 9.6°C (air: 15.9°C)
  • October: 9.6°C (air: 13.5°C)
  • November: 9.6°C (air: 10.7°C)
  • December: 9.6°C (air: 8.7°C)

Nearby Dive Sites in Cornwall & Devon

Nearest Dive Centres to PORT CHALMERS

Marine Life in Cornwall & Devon

Home to 192 recorded species including 93 reef fish, 18 sharks & rays, 13 whales & dolphins, 11 crabs & lobsters, 11 other, 10 seagrass & algae.

Notable Species

Recommended Packing List for PORT CHALMERS

Based on average water temperature of 9.6°C.

  • Drysuit - water at 10°C demands a drysuit with thermal undergarments
  • Hood & Gloves (7mm+) - critical to prevent heat loss
  • Mask - essential for every dive
  • Fins
  • BCD - buoyancy compensator
  • Regulator - your most safety-critical piece of gear
  • Dive Computer - tracks depth, time, and NDL
  • Surface Marker Buoy (SMB) - essential for boat pickups
  • Dive Torch - useful for crevices and colour at depth
  • Underwater Camera - capture your diving memories

Frequently Asked Questions

What are the typical dive depths and underwater topography like at Port Chalmers?
The Port Chalmers dive site is exceptionally shallow, with a typical depth of just 2 meters. It features the wreck of a sailing vessel, originally built in 1884, which ran aground on Wrea Rock in 1886. The wreck itself measures 76.1m x 11.6m, offering an interesting structure for exploration within its shallow confines.
What kind of marine life can scuba divers expect to see when diving in Port Chalmers?
While specific marine life sightings are not detailed in the provided data for Port Chalmers, wreck sites typically attract a variety of local species seeking shelter and food. Divers can generally anticipate encountering common temperate water marine life. For more general information on marine species, you can visit our wildlife database.
How challenging are the dive conditions at Port Chalmers for different skill levels?
The dive conditions at Port Chalmers are classified as "intermediate" difficulty. Furthermore, it is designated as a "Dangerous wreck," indicating that divers should possess appropriate experience and potentially specialized training for wreck penetration or navigating complex structures. This classification suggests it's best suited for divers beyond entry-level certification.
What is the best time of year and tidal conditions for diving in Port Chalmers?
The provided data does not specify the best time of year or optimal tidal conditions for diving at Port Chalmers. We recommend consulting local dive operators in Cornwall & Devon for up-to-date information on seasonal and tidal influences. For general guidance on dive planning, explore our when to dive resources.
What scuba diving certifications are required or recommended for diving in Port Chalmers?
Given the "intermediate" difficulty and its classification as a "Dangerous wreck," an Advanced Open Water certification or equivalent is highly recommended for diving Port Chalmers. Divers should also consider specialized wreck diving training to safely navigate and appreciate the site. Always ensure your equipment is suitable for wreck diving.
What are the usual water temperatures, visibility, and current conditions divers experience at Port Chalmers?
The provided data does not include specific information regarding the usual water temperatures, visibility, or current conditions at Port Chalmers. For the most current and accurate details on these environmental factors, it is always best to check directly with local dive centers in Cornwall & Devon before planning your dive.