Designed by the renowned Canadian firm Cuthbertson & Cassian in 1967, this compact fractional sloop represents classic late-1960s yacht design philosophy with a focus on performance and seaworthiness. Built by Paceship Yachts in Canada, the Bluejacket 23 features a modern fin keel with spade rudder configuration that provides responsive handling and efficient upwind performance.
With a displacement of 2,000 pounds and 900 pounds of ballast, this fiberglass sailboat offers excellent stability for its size while maintaining spirited sailing characteristics. The 201 square feet of sail area delivers good performance in light to moderate conditions, making it well-suited for day sailing, weekend cruising, and coastal exploration.
The boat's comfortable 12.11 comfort ratio suggests pleasant motion in a seaway, while the capsize screening formula of 2.22 indicates reasonable stability for protected and near-coastal waters. Her 17.50-foot waterline length contributes to a theoretical hull speed of 5.61 knots, typical for this size range.
This design appeals to sailors seeking a manageable yet capable boat for learning, casual racing, or intimate coastal cruising. The Cuthbertson & Cassian pedigree ensures sound naval architecture, while Paceship's Canadian construction reflects the era's solid fiberglass boatbuilding standards.
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Performance Ratios
SA/Displacement
Sail Area to Displacement ratio measures how much sail power a boat has relative to its weight. Higher values mean more performance and speed.
Under 14 — Heavy cruiser, slow14–18 — Cruising sailboat18–22 — Cruiser/racerOver 22 — Performance racer
20.31
Ballast/Displacement
Ballast to Displacement ratio shows what percentage of the boat's total weight is ballast. Higher values generally mean better initial stability and stiffer sail carrying.
Displacement/Length
Displacement to Length ratio measures how heavy a boat is relative to its waterline length. Lower values mean a lighter, faster boat.
Under 100 — Ultralight racer100–200 — Light cruiser/racer200–300 — Moderate cruiser300–400 — Heavy cruiserOver 400 — Very heavy
166.6
Comfort Ratio
Ted Brewer's Comfort Ratio predicts how comfortable a boat will feel in offshore conditions. Higher values mean a steadier, more comfortable motion in a seaway.
Under 20 — Uncomfortably rough20–30 — Acceptable coastal30–40 — Good offshore comfortOver 40 — Very comfortable offshore
12.11
Capsize Screening Formula
The USHS Capsize Screening Formula estimates offshore capsize risk. Lower is safer — values under 2.0 are considered acceptable for offshore sailing.
Under 2.0 — Safe for offshore2.0–2.2 — Borderline offshoreOver 2.2 — Coastal use recommended
2.22
Hull Speed
Hull Speed is the theoretical maximum speed of a displacement hull, calculated from waterline length. Most cruising sailboats reach this speed in moderate conditions.
5.61 kn
S# (Speed Number)
The Speed Number (S#) is a quick performance index. Higher values indicate a faster, more powerful design relative to its size.
Under 3.0 — Slow cruiser3.0–5.0 — Average cruiser5.0–7.0 — Performance cruiserOver 7.0 — Racer
3.56
Pounds/Inch Immersion
Pounds per Inch Immersion (PPI) tells you how much weight is needed to sink the boat one inch. Useful for calculating how additional gear and stores affect waterline.
437.71 pounds/inch
SA/Displacement (Calc)
Calculated Sail Area to Displacement ratio using actual measured sail dimensions rather than reported values. More precise than the reported SA/Disp figure.
20.33
Rig Dimensions
I (Foretriangle Height)
21.00 ft / 6.40 m
J (Foretriangle Base)
7.50 ft / 2.29 m
P (Mainsail Luff)
25.00 ft / 7.62 m
E (Mainsail Foot)
9.80 ft / 2.99 m
SA Fore
78.75 ft² / 7.32 m²
SA Main
122.50 ft² / 11.38 m²
SA Total (100%)
201.25 ft² / 18.70 m²
Est. Forestay Length
22.30 ft / 6.80 m
How It Compares
vs. Aloa 23, Ericson 23 2, Halcyon 23, Olympic Dolphin 23, San Juan 23
