The Prospect 900 is a sailboat that was designed by Dutch naval architect Ericus Gerhardus van de Stadt and first built in 1975.

[1][2][3][4] The boat was built by Rydgeway Marine in the United Kingdom, starting in 1975, but is now out of production.

[1][4][5] The Prospect 900 is a small recreational keelboat, built predominantly of fiberglass.

It has a masthead sloop rig, an internally-mounted spade-type rudder and a lifting keel.

[1][2][4] The boat is fitted with a Volvo MD5A diesel engine of 8 hp (6 kW).