Is anyone aware of an existing CoC adventure or supplement that details skills the equipment, skills, or anything with deep water diving. I'm thinking about Navy divers in those old diving suits with the cool helmets. I'm looking at the Diver occupation in the Investigator Handbook, and the info there is really thin. I'm looking for something that really talks about the occupation, the hazards, the procedures, equipment that was used... that kind of thing. Is anyone aware if something like that already exists in a published CoC book?