Don't forget people who have built a working manned submarine, sea-based launch platform and plan a suborbital flight at 100 kilometers. Their last launch had t

Don't forget people who have built a working manned submarine, sea-based launch platform and plan a suborbital flight at 100 kilometers. Their last launch had the biggest amateur rocket yet reaching 3 kilometers of altitude : http://www.copenhagensuborbitals.com/ http://www.copenhagensuborbitals.com/