Question: What non-profit organization did one of the builders of the UC1 Freya co-found?

Context paragraphs:
Protected Harvest: Protected Harvest is an American non-profit organization headquartered in Soquel, California that certifies sustainably grown crops.  The goal of the organization is to provide a standard measurement of what constitutes a sustainable product and use it to assure retailers and consumers that they are pucharsing sustainably grown items.  Protected Harvest was founded in 2001 as an independent non-profit organization and merged into SureHarvest in 2008.  According to EcoLabeling.org, a non-profit monitoring certification programs, "Protected Harvest is an eco-label with the stated mission of helping farmers meet environmental standards that yield high quality products and preserve healthy land for future generations."  Pest-management in particular is among the specialties of Protected Harvest, according to Consumer Reports.

Citizens Against Government Waste: Citizens Against Government Waste (CAGW) is a 501(c)(3) non-profit organization in the United States.  It functions as a think-tank, "government watchdog" and advocacy group for fiscally conservative causes.  The Council for Citizens Against Government Waste (CCAGW) is the lobbying arm of CAGW, organized as a section 501(c)(4) organization and therefore is permitted to engage in direct lobbying activities.  According to its web site, "CAGW is a private, non-partisan, non-profit organization representing more than one million members and supporters nationwide.  CAGW's stated mission is to eliminate waste, mismanagement, and inefficiency in the federal government."

Gleaners: Gleaners, Inc., also known as The Volunteers Of Gleaners, is a Jackson, MS based non-profit organization founded by Gloria Martinson in 1986 (not to be confused with the Gleaners Food Bank in Indiana, a non-profit organization which helps feed families struggling with hunger and food insecurity in central and southeast Indiana).  It salvages food that otherwise would go to waste and redistributes it to other non-profit shelters in the metro area.  Claude Mapp is the current CEO and Nancy Willis is the Director of Operations.

UC1 Freya: Freya or "UC1 Freya" (in Danish: "Freja") was the first private Danish submarine, and thus first amateur electric sub in Denmark.  It was built by Peter Madsen and Claus Nørregaard in 2001-2002, as a demonstrator to try submarine technology.  Having made over 500 dives, it was decommissioned, as it was not designed for a long service life.  It was decommissioned in 2006 after UC2 Kraka had been worked up.  The submarine was then docked and allowed to decay.  Final decontamination was done, and it was towed out to sea by UC3 Nautilus, in August 2008, and sunk as an artificial reef near Copenhagen.

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.

Round Table Society: The Round Table Society was a volunteer-run, charitable non-profit organization based in Chicago, Illinois.  It was endorsed by the Romanian General Consulate, and the organization's mission was to facilitate intercultural exchange, strengthen the Romanian-American community and create a sense of unity and belonging.  The organization had no religious or political affiliations.  According to the Illinois Secretary of State, the non-profit organization underwent involuntary dissolution on April 11, 2008.

Building Industry Association of Washington: The Building Industry Association of Washington or BIAW is a Washington State section 501(c) non-profit organization formed in 1966 to represent the housing industry in the state of Washington against government interests to regulate their trades.  BIAW's membership comprises about 7,735 member companies, home builders, trade contractors, suppliers and industry professionals.

Hawaii Rugby Football Union: The Hawaii Rugby Football Union is the Local Area Union for Rugby Union teams in the state of Hawaii.  Rugby Hawaii Inc. is non-profit organization and the Geographical Union (GU) under the umbrella of USA Rugby, the National organization founded in 1975.  The Hawaii Youth Rugby SBRO (State Based Rugby Organization) is also a non-profit organization and a Level 3 SBRO under the USA Rugby umbrella.

Alvera Mickelsen: Alvera Mickelsen (1919 – July 12, 2016) was an American academic, author, and women's equality activist.  Mickelsen, an evangelical Christian, spent her professional life advocating "that being a feminist is a Christian responsibility," despite resistance from some sectors.  She published numerous books and scholarly articles on the topic of women's equality within Christianity.  Alvera Mickelsen joined her colleagues to co-found Christians for Biblical Equality (CBE) in the late 1980s, a non-profit organization of churches and individuals which advocates for the equality of women within the church, as well as in their homes and society.  Additionally, Mickelsen was a longtime professor of journalism at Bethel University in Minnesota from 1968 to 1986.

Allied Arts of Seattle: Allied Arts of Seattle is a non-profit organization in Seattle, Washington, USA.  The organization advocates for public funding of the arts, better urban planning and architecture, and other civic improvements.  The organization claims to be the "oldest non-profit organization in Seattle dedicated to urban livability", but, in any case, at 50+ years old is certainly a venerable organization by the standards of a city barely older than 150 years It was a major force in establishing the Seattle Arts Commission, creating Seattle Center on the grounds of the Century 21 Exposition (1962 world's fair) and preserving historical landmarks and neighborhoods, particularly Pioneer Square and Pike Place Market, as well as defeating the 2012 Seattle Olympic bid.

Supporting paragraphs: UC1 Freya Peter Madsen (inventor)
Answer: Copenhagen Suborbitals