Sortebill is an Oslofjord wreck dive approached from the south pier in the outer marina. A line runs out from the pier to the wreck, so the site feels more like a guided cold-water route than a free-form swim-through. It suits divers who want a classic Norwegian wreck setup with crabs, shrimp, and other small life around the structure, but also understand that cold water and fjord visibility are part of the experience.