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National 10 Turnabout
Designer: Harold R.turner  ·  Builder: Jg Marine/Parker River Marine /J.r.duplin  ·  First built: 1953
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About the National 10 Turnabout

Designed as a simple, accessible dinghy for sailors of all ages, the National 10 Turnabout has built a quiet but loyal following among those looking for an approachable and rewarding on-the-water experience. This classic small sailboat is particularly well regarded as an introductory racing and daysailing craft, making it a popular choice for youth sailing programs and club-level competition where simplicity and fairness of design are valued. The Turnabout's appeal lies in its ease of handling and its one-design nature, which keeps racing competitive and focused on sailor skill rather than equipment differences. Its manageable size makes it ideal for inland lakes, sheltered bays, and calm coastal waters, offering an enjoyable sail without the complexity of larger vessels. For anyone researching a first boat or a fun club racer, the Turnabout presents an economical and community-supported option. Active class associations in some regions help maintain a healthy used market and organized racing calendars, meaning new owners can find both boats and competition without much difficulty. It remains a charming and purposeful little sailboat with enduring grassroots appeal.

Core Dimensions
LOA (Length Overall) 9.67 ft / 2.95 m
Beam 5.25 ft / 1.60 m
Displacement 255.00 lb / 116 kg
Sail Area (Reported) 61.00 ft² / 5.67 m²
Design & Construction
Hull Type Centerboard Dinghy
Rigging Type Cat (Marconi)
Construction FG
Designer Harold R.Turner
Builder JG Marine/Parker River Marine /J.R.Duplin
First Built 1953
Related Sailboats Dyer Dink · Penguin · Interclub Usa · Beverly Dinghy · Duckling
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Known Issues & What to Watch For

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Performance Ratios
SA/Displacement Sail Area to Displacement ratio measures how much sail power a boat has relative to its weight. Higher values mean more performance and speed.
Under 14 — Heavy cruiser, slow14–18 — Cruising sailboat18–22 — Cruiser/racerOver 22 — Performance racer
24.29
Capsize Screening Formula The USHS Capsize Screening Formula estimates offshore capsize risk. Lower is safer — values under 2.0 are considered acceptable for offshore sailing.
Under 2.0 — Safe for offshore2.0–2.2 — Borderline offshoreOver 2.2 — Coastal use recommended
3.31
Rig Dimensions
P (Mainsail Luff) 15.25
E (Mainsail Foot) 8.0
SA Main 61.0
How It Compares

vs. Beverly Dinghy, Duckling, Dyer Dink, Interclub Usa, Penguin

This boat Similar boats
Dimensions
LOA
National 10 Turnabout ★
9.7 ft
Beverly Dinghy
11.5 ft
Duckling
9.0 ft
Dyer Dink
10.0 ft
Interclub Usa
11.5 ft
Penguin
11.4 ft
Beam
National 10 Turnabout ★
5.3 ft
Beverly Dinghy
4.5 ft
Duckling
4.0 ft
Dyer Dink
4.5 ft
Interclub Usa
4.6 ft
Penguin
4.7 ft
Displacement
National 10 Turnabout ★
255 lbs
Beverly Dinghy
207 lbs
Duckling
140 lbs
Dyer Dink
135 lbs
Interclub Usa
150 lbs
Penguin
140 lbs
Sail Area
National 10 Turnabout ★
61 sq ft
Beverly Dinghy
66 sq ft
Duckling
50 sq ft
Dyer Dink
66 sq ft
Interclub Usa
72 sq ft
Penguin
Performance
SA / Displacement (higher = more powerful)
National 10 Turnabout ★
24.3
Beverly Dinghy
Duckling
29.7
Dyer Dink
Interclub Usa
40.8
Penguin
Comfort Ratio (higher = more comfortable offshore)
National 10 Turnabout ★
Beverly Dinghy
4.2
Duckling
4.2
Dyer Dink
3.1
Interclub Usa
2.7
Penguin
2.7
Capsize Screening (lower = safer)
National 10 Turnabout ★
3.31
Beverly Dinghy
Duckling
Dyer Dink
Interclub Usa
3.45
Penguin
Displacement / Length (lower = lighter)
National 10 Turnabout ★
Beverly Dinghy
98
Duckling
139
Dyer Dink
98
Interclub Usa
44
Penguin
68
Hull Speed
National 10 Turnabout ★
Beverly Dinghy
4.2 kts
Duckling
3.7 kts
Dyer Dink
3.9 kts
Interclub Usa
4.5 kts
Penguin
4.2 kts
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