Original model introduced in 1985. It displaces 11,950 lb (5,420 kg) and carries 5,000 lb (2,268 kg) of ballast. The boat has a PHRF racing average handicap of 138 with a high of 153 and low of 114. Boats built from 1985-86 have deck-stepped mast and a Universal diesel engine of 21 hp (16 kW). The boat has a draft of 5.58 ft (1.70 m) with the standard fin keel. Boats built between 1987-1990 have a keel-stepped mast and a Universal 25XP diesel engine of 23 hp (17 kW). Boats built between 1990-1991 have a walk-through transom and a Universal M35 diesel engine of 30 hp (22 kW). The last Mk I models produced resembled the Mk II in configuration.[1][2][4]
Catalina 34 SD
Shoal-draft model introduced in 1985, with a draft of 4.7 ft (1.4 m) with a fin keel. It displaces 12,550 lb (5,693 kg). The boat has a PHRF racing average handicap of 150 with a high of 156 and low of 141.[1][4][5]
Catalina 34 TM
Tall Mast model introduced in 1985, with a mast about 2 ft (0.6 m) taller and draft of 5.6 ft (1.7 m) with the fin keel. It displaces 11,950 lb (5,420 kg). The boat has a PHRF racing average handicap of 144 with a high of 165 and low of 135.[1][6]
Catalina 34 WK
Wing Keel model introduced in 1985, with a draft of 3.83 ft (1.17 m) with the wing keel. It displaces 12,550 lb (5,693 kg). The boat has a PHRF racing average handicap of 153 with a high of 159 and low of 150.[1][7]
Catalina 34 TM WK
Tall Mast and Wing Keel model introduced in 1985, with a mast about 2 ft (0.6 m) taller and draft of 3.83 ft (1.17 m) with the wing keel. It displaces 12,550 lb (5,693 kg). The boat has a PHRF racing average handicap of 150 with a high of 162 and low of 147.[1][8]
Catalina 34 Mk II
Redesigned model introduced in 1996, with a wider aft deck, a deck stepped mast with compression post and many small refinements. The Mark II is identical at the waterline to permit the boats to be raced against the earlier boats in a one design class. It displaces 11,950 lb (5,420 kg) and carries 5,000 lb (2,268 kg) of ballast. The boat has a draft of 5.58 ft (1.70 m) with the standard fin keel. The Mk II has a PHRF racing average handicap of 153 with a high of 171 and low of 147.[9][10][11]