Masthead Sloop
• Fin with rudder on skeg
• Built 1969–1977
Dimensions
LOA
41.5 ft
LWL
29.92 ft
Beam
11.42 ft
Max Draft
6.82 ft
Displacement
18,637 lbs
Ballast
9,700 lbs
Performance Ratios
Capsize Ratio ⓘ
1.72
(offshore safe)
SA/D Ratio ⓘ
17.9
D/L Ratio ⓘ
311
Ballast Ratio ⓘ
52.0%
Sail Plan
Sail Area
788 sq ft
Construction
Hull Type
Fin with rudder on skeg
Rig Type
Masthead Sloop
Hull Material
FG
Ballast Type
Lead
Production
First Built
1969
Last Built
1977
Number Built
15
Engine & Accommodations
Engine Make
Lombardini
Power
45 hp
Engine Type
Diesel
Water
100 gal
Fuel
25 gal
Notes: Thanks to 'rmanganaro' for providing additional information including the following commentary:\n\nThe design was commissioned by 12 individuals who wished to purchase the latest world class racer. (S&S was certainly the 'cutting edge' at the time). Alpa, selected as the builder, absorbed some of the cost of the tooling with high hopes of building and selling many more. \nThe boats are said to be have been built to a very high standard, (with inspections by S&S, Lloyds of London at every stage of construction.) Costs also proved to be higher than expected. \nWhen the first 12 were finally delivered, the International Offshore Rule (IOR) had just been introduced, and these boats, originally designed to the RORC, could no longer be sold as the latest racing design. \nAlpa only sold 3 more besides the original 12 and the whole project created a huge financial strain on the company.