It has a masthead sloop rig, a raked stem, a reverse transom, an internally mounted spade-type rudder controlled by a tiller and a fixed fin keel.

[2] The first 25 boats built were fitted with a Japanese Yanmar 2GMF two cylinder diesel engine of 18 hp (13 kW).

[2][5] The later Mk II version has a taller rig, an updated keel and rudder and a more cruising oriented interior.

[5][6] In a 2005 used boat review in Sailing Magazine, writer John Kretschmer concluded of the design, "The Express 37 offers exhilarating performance both on and off the racecourse.

"[5] Marine surveyor and naval architect, Jack Hornor described the design in a 2007 review, "the Express 37 will appeal to sailors interested in racing more than the dedicated cruiser; although, there is no reason these mid-1980s models can’t serve double duty for prospective buyers looking for a reasonably priced, solidly constructed racer/cruiser...Although contemporary in appearance, Schumacher’s respect for the beauty of traditional, well balanced boats is apparent in this design.