The design is very similar to the G&S 27, which was designed the same year by Graham & Schlageter.[5][6]
Design
The Mariah 27 is a racing keelboat, built predominantly of fiberglass. It has a masthead sloop rig, an internally mounted spade-type rudder controlled by a tiller and a fixed fin keel. It displaces 5,100 lb (2,313 kg) and carries 1,975 lb (896 kg) of ballast.[1][3]
The boat has a draft of 5.00 ft (1.52 m) with the standard keel. The boat is normally fitted with a small outboard motor for docking and maneuvering.[1][3]
The design has a hull speed of 6.36 kn (11.78 km/h).[3]