It has a masthead sloop rig with aluminum spars, a raked stem, a near-vertical transom, a skeg-mounted rudder controlled by a wheel and a short fixed fin keel.
[1] A tall rig was optional, with a mast about 2.0 ft (0.61 m) higher than standard for use in locations with light winds.
[1][3][5] The design has a galley on the starboard side, including an 8 95 cu ft (2.7 m3) icebox and pressure water.
[3] In a review Richard Sherwood wrote, "the Allmand is claimed to have a tacking angle of 84 degrees.
The boat is solidly constructed and doesn’t look that dated, but the builder wasn’t known for sailboats, and this probably accounts for the 31’s current depressed price"[5] A review in Practical Sailor, stated, "this 1970's era cruiser is beloved for its roomy, tri-cabin interior, but it does not sail close to the wind and the shoal keel makes excessive leeway.".