Grampian 34 Ketch

Description

The Grampian 34 Ketch, a modified adaptation of the British Triangle 32 designed by Peter Ibold and introduced by Grampian Marine in Oakville, Ontario, around 1972–1977, represents the builder's largest production model with approximately 100 hulls completed before the company's closure, emphasizing seaworthy cruising for offshore passages over speed or flash. At 33 feet 7 inches LOA, 28 feet LWL, 10 feet 6 inches beam, 12,000-pound displacement, and 5,000 pounds of external lead ballast for a robust .42 ballast/displacement ratio ensuring stiffness and self-righting ability, it features a long fin keel drawing 5 feet 2 inches (or optional shoal-draft variant at 4 feet 2 inches) and a ketch rig with 429 square feet of sail area—mainsail and headsail totaling 198 and 232 square feet, respectively—delivering a modest SA/D of 13.5 and PHRF around 168 for balanced, dry handling in coastal or blue water conditions, though its displacement/length ratio of 305 marks it as a heavy-displacement plodder with a hull speed of 7.1 knots. Constructed with thick hand-laid fiberglass for durability—often praised for surviving knockdowns and gales—the interior offers 6 feet 2 inches of headroom in a center-cockpit layout with V-berth forward, U-shaped galley, convertible settees, enclosed head, and a spacious aft cabin with quarter berth for up to five, complemented by a 40-gallon water tank and 30-gallon fuel capacity.

Construction Details

Designer Peter Ibold
Builder Grampian Marine
Length 34.000 ft
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The standard boat dimensions

i 38.33 ft
j 12.08 ft
p 33 ft
e 12 ft
p2 25.67 ft
e2 9.50 ft
i2 -
j2 -

Sails

Sail Type MAINSAIL
Luff * 33 ft - (10058 mm)
Foot * 12 ft - (3658 mm)
Leech * 34.48 ft - (10510 mm)
Tack Angle * 88 °
Diagonal * 34.72 ft - (10583 mm)
Head (inches) * 5.25 in - (133 mm)
Area * 204.21 ft²
Sail Type JIBSAIL
Luff * 32.15 ft - (9799 mm)
Foot * 15.96 ft - (4865 mm)
Leech * 27.98 ft - (8528 mm)
Percentage LP * 114.98 %
Length Perpendicular * 13.89 ft - (4234 mm)
Deck Angle * 12.02 °
Area * 223.28 ft²
Sail Type GENOA
Luff * 38.18 ft - (11637 mm)
Foot * 19.47 ft - (5934 mm)
Leech * 35.96 ft - (10961 mm)
Percentage LP * 150 %
Length Perpendicular * 18.12 ft - (5523 mm)
Deck Angle * 3.96 °
Area * 345.94 ft²
Sail Type SPINNAKER
Stays * 38.18 ft - (11637 mm)
MidGirth * 21.74 ft - (6626 mm)
Foot * 21.74 ft - (6626 mm)
Perc LP * 180 %
Area * 706 ft²
Sail Type MIZZEN
Luff * 25.67 ft - (7824 mm)
Foot * 9.5 ft - (2896 mm)
Leech-AftHdBd * 26.79 ft - (8166 mm)
Tack Ang * 88.01 °
Diag (clew/head) * 27.06 ft - (8248 mm)
Head (inches) * 4.5 in - (114 mm)
Area (no Roach) * 125.36 ft²

Disclaimer. Boats are not all the same -- even when produced in the same factory of the same model. Sailrite does its best to publish accurate dimensions, but we often find it worthwhile to have our customers measure their boats carefully before we produce kits for them. You should take the same precautions, especially when the data is not from Sailrite. The information on this site is not guaranteed to be accurate. Sailrite offers this content as a service to our community, but takes no responsibility for the reliability of the data provided.