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Copperhead 14
Designer: Rod Mcalpine-Downie/Dick Gibbs  ·  Builder: Sail Mfg (Usa)  ·  First built: 1970
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About the Copperhead 14

Designed by the accomplished duo of Rod McAlpine-Downie and Dick Gibbs, this compact centerboard dinghy emerged in 1970 as a spirited performer for small boat enthusiasts. Built by Sail Manufacturing in fiberglass construction, the Copperhead 14 offers remarkable sailing capability within its modest 13.75-foot length. The gunter rig configuration provides an excellent balance of power and manageable sail handling, making this boat particularly well-suited for day sailing, sailing instruction, and recreational coastal adventures. With its generous sail area of 85 square feet relative to its lightweight 135-pound displacement, the Copperhead delivers lively performance that will satisfy sailors seeking an engaging ride without overwhelming complexity. The boat's narrow 4.42-foot beam and moderate 2.33-foot draft create a hull form that tracks well and responds readily to wind shifts, though the capsize screening formula of 3.45 suggests this is decidedly a fair-weather coastal sailor rather than a rough-water performer. Its lightweight construction makes car-topping and beach launching straightforward, while the centerboard configuration allows access to shallow waters and simplified storage. This combination of portability, performance, and classic dinghy sailing characteristics makes the Copperhead 14 an appealing choice for sailors wanting genuine sailing excitement in a trailerable package.

Core Dimensions
LOA (Length Overall) 13.75 ft / 4.19 m
Beam 4.42 ft / 1.35 m
Max Draft 2.33 ft / 0.71 m
Min Draft 0.33 ft / 0.10 m
Displacement 135.00 lb / 61 kg
Sail Area (Reported) 85.00 ft² / 7.90 m²
Design & Construction
Hull Type Centerboard Dinghy
Rigging Type Gunter
Construction FG
Designer Rod McAlpine-Downie/Dick Gibbs
Builder Sail MFG (USA)
First Built 1970
Associations MFG Sailboats
Owner Reviews

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Performance Ratios
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
37.75
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
2.33
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. 4.58 kn
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. 1.11 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. 43.5
Rig Dimensions
P (Mainsail Luff) 15.33 ft / 4.67 m
E (Mainsail Foot) 9.33 ft / 2.84 m
SA Main 71.51 ft² / 6.64 m²
SA Total (100%) 71.51 ft² / 6.64 m²
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