Back to Search
Aloha 104
Designer: Ted Brewer  ·  Builder: Aloha Yachts (Can)  ·  First built: 1981
+ Add to Compare
About the Aloha 104

Built by Canadian manufacturer Aloha Yachts beginning in 1981, this 34-foot cruising sailboat represents designer Ted Brewer's focus on creating seaworthy, comfortable vessels for serious sailors. The cutter rig configuration provides excellent sail handling flexibility, particularly valuable for couples or short-handed crews tackling longer passages. With a displacement of 13,600 pounds and a comfort ratio of 27.91, the Aloha 104 delivers the steady, predictable motion that makes extended cruising enjoyable rather than exhausting. The substantial ballast-to-displacement ratio contributes to impressive stability, while the fin keel with rudder mounted on a protective skeg offers good tracking and maneuverability without sacrificing durability. Ted Brewer's conservative design philosophy shines through in the boat's moderate proportions and robust construction featuring fiberglass hull with balsa-cored decking. The capsize screening formula of 1.88 indicates excellent offshore capability, making this yacht well-suited for coastal cruising and blue-water passages alike. While not a speed demon, the Aloha 104 prioritizes safety, comfort, and reliability over pure performance. The spacious 11-foot beam provides generous interior volume, and the 21-horsepower auxiliary engine offers adequate power for maneuvering in tight quarters or motoring through calms.

Core Dimensions
LOA (Length Overall) 34.00 ft / 10.36 m
LWL (Waterline Length) 28.67 ft / 8.74 m
Beam 11.17 ft / 3.40 m
Max Draft 5.50 ft / 1.68 m
Displacement 13,600.00 lb / 6,169 kg
Ballast 4,700.00 lb / 2,132 kg
Sail Area (Reported) 531.00 ft² / 49.33 m²
Design & Construction
Hull Type Fin with rudder on skeg
Rigging Type Cutter
Construction FG w/balsa cored deck
Designer Ted Brewer
Builder Aloha Yachts (CAN)
First Built 1981
Owner Reviews

No owner reviews yet — be the first to share your experience with this boat.

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
 14.96
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.
30–35% — Typical cruiser35–45% — Stiff performance boatOver 45% — Racing oriented
 34.56
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
 257.64
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
 27.91
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
 1.88
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. 7.17 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
 1.91
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. 1,144.27 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. 14.96
Rig Dimensions
I (Foretriangle Height) 43.50 ft / 13.26 m
J (Foretriangle Base) 14.00 ft / 4.27 m
P (Mainsail Luff) 37.75 ft / 11.51 m
E (Mainsail Foot) 12.00 ft / 3.66 m
SA Fore 304.50 ft² / 28.29 m²
SA Main 226.50 ft² / 21.04 m²
SA Total (100%) 531.00 ft² / 49.33 m²
Est. Forestay Length 45.70 ft / 13.93 m
Engine & Accommodations
Engine Make Westerbeke
Engine Type Diesel
Horsepower 21
Fuel Capacity 26 gals / 98 L
Water Capacity 60 gals / 227 L
Find a Aloha 104 For Sale
Y YachtWorld Brokerage listings S Sailboat Listings Sailboats only C Craigslist National search F Facebook Marketplace Local listings B boats.com Global marketplace