Beachcomber Dory Alpha Rig 21'

Description

The Beachcomber-Alpha Dory is a classic American racing and recreational dory designed by maritime historian and boatbuilder John Gardner in the early 1970s, detailed in his book The Dory Book (1978). Inspired by the late 1800s Marblehead, Massachusetts, dory racing tradition and the original Beachcomber Club dories built by William H. Chamberlain around 1903, it revives the Swampscott-style dory for modern use. The design features lapstrake (clinker-built) wooden construction, typically cedar planks on oak frames, making it suitable for one-design racing, daysailing, tandem rowing, or light coastal cruising in protected waters like bays or lakes. At 21 feet, it's optimized for short-handed crews (1–3 people) with a fractional sloop rig, centerboard for lift, and versatility for sailing, rowing, or small outboard power. It's not a blue water vessel but excels in regattas (e.g., Swampscott River Race) or family outings, with planning speeds up to 10+ knots in moderate winds. Active fleets exist in New England, and modern builds may incorporate plywood/epoxy for easier construction.

Construction Details

Designer John Gardner
Length 21.000 ft
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The standard boat dimensions

i -
j -
p 15 ft
e 15 ft
p2 -
e2 -

Blueprints

Sails

Sail Type MAINSAIL
Luff 15 ft - (4572 mm)
Foot 15 ft - (4572 mm)
Leech 16.63 ft - (5069 mm)
Tack Angle * 66.73 °
Diagonal 16.5 ft - (5029 mm)
Head (inches) 2 in - (51 mm)
Area * 104.21 ft²
Sail Type JIBSAIL
Luff 9.58 ft - (2920 mm)
Foot 4.83 ft - (1472 mm)
Leech 8.25 ft - (2515 mm)
Length Perpendicular * 4.16 ft - (1268 mm)
Area * 19.92 ft²

Disclaimer. Boats are not all the same -- even when produced in the same factory of the same model. Sailrite does its best to publish accurate dimensions, but we often find it worthwhile to have our customers measure their boats carefully before we produce kits for them. You should take the same precautions, especially when the data is not from Sailrite.