Aloha 28 (8.5) Specs


Please Note, during the lengthy production runs of the A27 (8.2) and A28 (8.5), Ouyang Boatworks used a number of different mast and sail suppliers and specifications with differing mast and boom lengths. We are not aware of similar variations in the A30 and A32 models, but it is always possible. With this in mind, please do not rely on the measurements provided if you have to pass under an overhead obstruction (eg bridge or powerlines) where clearance will be limited, when ordering sails or establishing a racing handicap. If you require accurate numbers for any of these purposes we strongly recommend you measure your actual boat and we accept no responsibility for the consequences of any inaccuracies in the quoted figures, or in variations applying to your boat.

General Hull Specs Aloha 8.5
Builder Ouyang Boat Works
Location Whitby, Ontario
Year Approx 1973 – 1988
Designer Ted Brewer & Robert Wallstrom
Type Sloop
Displacement 6750 lbs
Ballast 2750 lbs
Construction Fibreglass hull and deck
Fuel Tank Capacity 12 gals (US)
Fill location Port side
Fresh Water Capacity 30 gals (US)
Holding Tank Capacity 24 gals (US)
Length Overall 28′ (8.5 meters)
Length Waterline 24′ 6″
Beam 9′ 5″
Draft 4′ 4″
Steering Tiller
Bridge Clearance Height (approx) 44′ 0″ (Tall Rig)
Mast Step Deck
Keel Type Fixed Fin Encapsulated Ballast
Main Sail 168 sq. ft. P 32.00′
Jib 169 sq. ft. E 10.50′
Genoa 150% 328 sq. ft. I 37.00′
Spinnaker 180% 395 sq. ft. J 12.25′
Engine Type Inboard Diesel
Number of cylinders 2
HorsePower 11 or 13
Inboard Make Universal 5411 or Westerbeke
Ventilation Blower
Cooling system Raw water cooled or Fresh water cooled
Prop shaft size 1 inch
Aloha 28 (8.5) Ratings & Ratios
PHRF Rating
No Flying Sails 201
With Spinnaker 183
Displacement/Waterline Length (D/L) 205
Sail Area/Displacement (SA/D) 17.7
Ballast Ratio (BR) 41%
Theoretical Hull Speed (HSPD) 6.63 knots