CALCIUM (PROBABLY) - Northumberland & Northeast

We’ve spent some chilly hours on the Calcium (Probably), and it’s a site that really gets its hooks in you. This isn’t a pristine, intact wreck you’ll swim through room by room. Instead, it’s an impressive debris field, scattered across the seabed at a consistent 11 metres. We think it’s best approached as a treasure hunt. You’ll find plates, the remains of the boiler, and twisted metal that gives away its 1940 sinking. Our favourite parts are the sections where the ship's structure creates small overhangs and hidey-holes. That’s where you’ll usually spot wrasse, some sizeable pollack, and sometimes even a lobster or two tucked away. Visibility here can be a bit of a lottery, as with much of the Northumberland coast, so we always check the tides – slack water is key for the best experience. If you’re into exploring history and don’t mind a bit of a rummage, this wreck is a solid choice. It’s accessible for most diver levels, making it a great dive to get familiar with North Sea wreck diving.

Location
Northumberland & Northeast, United Kingdom, Mediterranean & Europe
Coordinates
53.428100, -3.500551
Type
wreck
Maximum Depth
11m

Wreck History - CALCIUM (PROBABLY)

Year Sunk
1940
Vessel Type
cargo ship
Cause
mined
Tonnage
965 GRT

The SS Calcium was a classic steamship built in 1918 by G. Brown & Co. in Greenock, Scotland. Powered by a triple-expansion engine, the vessel was owned by the United Alkali Co Ltd, a subsidiary of the industrial giant ICI. As her name suggests, she was likely involved in transporting chemical products, a vital role for industry both in peacetime and during the war.

Her service came to a tragic end during the Second World War. On December 13, 1940, while navigating the perilous waters off the Northeast coast of England, the SS Calcium struck a mine. The explosion was catastrophic, and the ship sank quickly, becoming another victim of the intense naval warfare that characterized the period in the North Sea.

Today, the wreck of the Calcium rests in just 11 meters of water, making it a fantastic and accessible site for divers of all levels. Its shallow depth allows for long bottom times and excellent light penetration on clear days. The wreck is well broken up but key features, such as its single boiler and the remains of its engine, are still identifiable. It has transformed into a vibrant artificial reef, bustling with the marine life typical of the Northumberland coast.

Marine Protected Area: Liverpool Bay / Bae Lerpwl

Nearby Dive Sites in Northumberland & Northeast

Nearest Dive Centres to CALCIUM (PROBABLY)

Marine Life in Northumberland & Northeast

Home to 132 recorded species including 53 reef fish, 15 whales & dolphins, 11 sharks & rays, 10 other, 10 seagrass & algae, 9 crabs & lobsters.

Notable Species

Frequently Asked Questions

What is the typical depth range for diving at CALCIUM (PROBABLY)?
The CALCIUM (PROBABLY) dive site has a typical depth of 11 meters. This relatively shallow depth makes it accessible for divers with various experience levels.
What kind of marine life and underwater features can divers expect to see at CALCIUM (PROBABLY)?
Divers at CALCIUM (PROBABLY) can explore the remains of a 55m x 8.6m steam ship vessel, built in 1918 and sunk on December 13, 1940. This wreck features a boiler and a triple expansion engine, offering an interesting historical underwater landscape. While specific marine life details are not provided, wrecks often attract various species, which you can learn more about in our wildlife database.
How difficult is the diving at CALCIUM (PROBABLY), and is it suitable for beginners?
Diving at CALCIUM (PROBABLY) is classified as intermediate difficulty. Therefore, it is not typically recommended for absolute beginners. Divers should possess some experience and appropriate certifications for wreck diving to safely explore this site.
What is the best time of year or season to dive at CALCIUM (PROBABLY) for optimal conditions?
The provided data does not specify the best time of year or season to dive at CALCIUM (PROBABLY) for optimal conditions. For general guidance on planning your dives and understanding seasonal variations, you might find our when to dive section helpful.
Are there any specific diving certifications required to dive at CALCIUM (PROBABLY)?
While specific certification requirements are not explicitly stated, given the intermediate difficulty and classification as a dangerous wreck, divers should possess appropriate experience and certifications for wreck diving. Always ensure you have the necessary training and equipment for safely exploring such sites.
What are the typical current and water conditions like at the CALCIUM (PROBABLY) dive site?
The provided data does not include specific information regarding the typical current or water conditions at the CALCIUM (PROBABLY) dive site. It is always advisable to check local conditions and forecasts with dive operators before planning your dive.