Please reed the following closely

Diving is a potentionally hazardous practice that, if practised incorrectly or with incomplete planning and procedures, can expose a person to considerable risks including serious injury or death. It requires specialized training, equipment, and experience.

No standard will ever exist which can substitute  for common sense, sound judgement, and a continuing concern for maximum safety. Safety is not a rule book, it is a state of mind. As you can imagine, diving with historical equipment could expose you to even more hazards then modern new equipment. If you are not exactly sure what you are doing, DON'T dive. 

liability

Contact us at info@divingheritage.com if you need any further information.