Danish UC submarines were built by the entrepreneur who is CEO of what company?
Peter Madsen (inventor) Peter Langkjær Madsen (] ; born 12 January 1971) is a Danish aerospace engineering enthusiast, "art engineer", submarine builder, entrepreneur, co-founder of the non-profit organization Copenhagen Suborbitals, and founder and CEO of RML Spacelab ApS.
Royal Denship Royal Denship was a Danish multi-facility conglomerate ship and yacht builder. Presently in administration, the company has created some of the world's largest super yachts.