The F2 Barge is a wreck and artificial reef located in Scapa Flow, United Kingdom. Resting at depths between 8 and 18 metres, this site is suitable for beginner divers. The wreck provides structural shelter, with mild currents allowing for a relaxed exploration of the hull. Visibility is variable, ranging from 5 to 20 metres. Due to cold water temperatures between 8 and 13 degrees Celsius, a drysuit is essential. Divers should remain cautious of sharp edges and potential entanglement points throughout the structure. Access is by boat only, and guided tours are available locally to assist with site navigation.

Churchill Barrier 3 in the Orkney Islands offers a unique opportunity to snorkel over the remains of the SS Reginald and SS Empire Seaman. These wrecks lie in shallow water, allowing for clear observation of the structures from the surface. The site is accessed via the shore and is best suited for intermediate snorkelers due to the variable conditions of the North Sea. Water temperatures range from 7C in February to 13C in August and September. The site is highly rated for its historical interest and the structural complexity of the submerged vessels, which provide a distinct environment for exploration in the Orkney region.

F2 is a reef site located within the Scapa Flow Wrecks area. Divers should be prepared for water temperatures ranging from 8 to 13 degrees Celsius, necessitating the use of a drysuit or thick wetsuit. Conditions at this site are variable, with currents that may require advanced drift diving techniques. All entries and exits must be conducted from a boat. Divers are advised to monitor depth closely to manage decompression and nitrogen narcosis risks. Given the shifting nature of local visibility and tidal movement, checking tide tables and recent reports is essential before planning a dive. Divers should arrive self-sufficient with all necessary equipment.

The SMS Dresden is a scuttled German Imperial Navy cruiser located in Scapa Flow. The wreck lies at depths ranging from 25 to 38 metres, with an average depth of 32 metres. Divers can explore the exterior of the vessel, which features encrusting marine growth. Access is by boat only, situated 1000 metres from the shore. Conditions include moderate currents and visibility typically between 12 and 20 metres. Water temperatures range from 8 to 13 degrees Celsius, making a drysuit and thermal underlayer essential. Due to the depth and potential for entanglement, this site is suitable for intermediate divers. Air fills are available locally.

Barrel of Butter is a combined natural and artificial reef located within the Scapa Flow Wrecks area. The site sits at depths between 10 and 20 metres, with an average depth of 15 metres. Divers should expect visibility ranging from 5 to 10 metres and water temperatures between 8 and 13 degrees Celsius, making a drysuit the practical choice. While currents at the site are generally mild, strong currents can develop in the surrounding Orcadian waters. Access is by boat, and divers must be aware of potential surf and sharp rocks in shallow areas. This site is suitable for intermediate divers who should plan their dives around slack water.

Scapa Flow features the remains of the German High Seas Fleet, including four light cruisers and three battleships. These wrecks, which range from 24 to 45 metres in depth, offer historical features such as guns, steering wheels, boilers, anchor capstans, and bows. The site is strictly for advanced divers due to depths, moderate currents, and variable visibility between 3 and 20 metres. Access is by boat only, and a drysuit is highly recommended given the water temperatures of 8 to 13C. Species recorded around this area include orange-clubbed nudibranchs, sea stars, common sea stars, crabs, rock crabs, snails, and sea squirts.

SMS Cöln is a German light cruiser scuttled in 1919, resting upright on the seabed in Scapa Flow. The wreck remains largely intact, offering divers the opportunity to explore recognisable deck features, gun emplacements, and the hull structure. Depths range from 20 to 36 metres, with an average of 30 metres. Access is by boat only. Conditions include mild currents and visibility between 5 and 20 metres. Due to water temperatures of 8 to 13C, drysuits are recommended year-round. Divers should be prepared for cold water and low visibility, and exercise caution when navigating internal wreck structures. Guided tours are available through local operators.

SMS König is a scuttled German battleship located in Scapa Flow. The wreck sits upright on the seabed, with the main deck at approximately 16 metres and the hull reaching 42 metres. This site is suited for advanced divers capable of navigating large steel structures. Access is by boat only, and dives typically last 30 minutes. Conditions include moderate currents and visibility ranging from 5 to 20 metres. Water temperatures are cold, between 8 and 13 degrees Celsius, making drysuit diving essential. Divers should be aware of hazards including boat traffic and entanglement risks. Slack water is the recommended window for diving, and coordination with a charter skipper is necessary.