Gaffhead Sloop
• Long keel w/trans. hung rudder
• Built 1914–1948
Dimensions
LOA
15.83 ft
LWL
12.5 ft
Beam
5.83 ft
Max Draft
2.5 ft
Displacement
1,250 lbs
Ballast
735 lbs
Performance Ratios
Capsize Ratio ⓘ
2.17
(use caution offshore)
SA/D Ratio ⓘ
19.3
D/L Ratio ⓘ
286
Ballast Ratio ⓘ
58.8%
Sail Plan
Sail Area
140 sq ft
Construction
Hull Type
Long keel w/trans. hung rudder
Rig Type
Gaffhead Sloop
Hull Material
Wood
Ballast Type
Lead
Production
First Built
1914
Last Built
1948
Number Built
400
Notes: Gaff rig until 1936. From 1937 onwards, one could choose either a gaff or Marconi rig.\nThe original boats were built by Herreshoff Manufacturing beginning in 1914 (357). \nFrom 1943 to 1948, more were built by Cape Cod Shipbuilding (34 + 200, later in fiberglass), as well as the Quincy Adams Yacht Yard (51).\nCape Cod Shipbuilding came out with the BULLSEYE, built of fiberglass, with a similar hull but a different rig.\nThe DOUGH DISH, (one of the many nicknames previously associated with the class)is a faithful rendition of the 12 1/2, first built in 1972 of fiberglass by Doughdish Inc., of which 575 were built. They have been recognized and approved by the class to race on equal footing with the remaining, original wood boats.\nClass rules permit a spinnaker of 140 sq. ft.