Masthead Sloop
• Fin w/spade rudder
• Built 1962–1977
Dimensions
LOA
24 ft
LWL
17.25 ft
Beam
6.25 ft
Max Draft
3.5 ft
Displacement
2,250 lbs
Ballast
1,120 lbs
Performance Ratios
Capsize Ratio ⓘ
1.91
(offshore safe)
SA/D Ratio ⓘ
19.9
D/L Ratio ⓘ
196
Ballast Ratio ⓘ
49.8%
Sail Plan
Sail Area
214 sq ft
I
24 ft
J
8.8 ft
P
21.7 ft
E
10 ft
Construction
Hull Type
Fin w/spade rudder
Rig Type
Masthead Sloop
Hull Material
FG
Ballast Type
Iron.
Production
First Built
1962
Last Built
1977
Number Built
500
Notes: S&S design #1701. Originally designed in 1961 for the Annapolis Sailing School. A version with extended coach roof was called the RAINBOW WEEKENDER. Another version without any cuddy or cabin was built for the U. S. Naval Academy and called the KNOCKABOUT. Including all variants, it is thought that around 500 hulls were built.\n(The first few boats were found to be somewhat tender and ballast was increased to 1120 lbs.)\n(A small cruiser, the ANNAPOLIS 25 uses the RAINBOW hull with an entirely different different deck and coach roof. A small but unknown number of these were built.)