 The "Snowgoose" models were offered with a mast-aft rig, and it boasted a number of features that made short-handed sailing easier than with a standard Bermuda rig.Broadblue Catamarans Ltd. now owns and makes two of the Prout designs, which still come standard with the mast-aft rig.RB Power & Sailing of Thailand offers two aft-mast catamarans.