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Dogger
Designer: E. G. Van De Stadt  ·  First built: 1965
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About the Dogger

Designed by renowned Dutch naval architect E. G. Van De Stadt in 1965, this 31-foot masthead sloop represents classic European cruising design philosophy from the mid-1960s. The Dogger's plywood single-chine construction reflects the era's emphasis on practical, affordable boatbuilding methods that still delivered seaworthy performance. With its moderate fin keel and spade rudder configuration, the Dogger strikes a balanced approach between cruising comfort and sailing performance. The boat's substantial displacement of 6,614 pounds, combined with nearly 3,200 pounds of ballast, creates a stable platform well-suited for coastal cruising and intermediate offshore passages. The comfort ratio of 22.36 suggests a motion that favors seaworthiness over speed, while the capsize screening formula of 1.82 indicates good stability characteristics for ocean sailing. Van De Stadt's design philosophy emphasized practical cruising boats that could handle a variety of conditions, and the Dogger embodies this approach. The moderate sail area and conservative proportions make it manageable for small crews while providing enough accommodations for extended cruising. This design appeals to sailors seeking a traditional, well-mannered cruiser with proven offshore capabilities and the charm of classic yacht design.

Core Dimensions
LOA (Length Overall) 31.00 ft / 9.45 m
LWL (Waterline Length) 24.28 ft / 7.40 m
Beam 8.53 ft / 2.60 m
Max Draft 4.63 ft / 1.41 m
Displacement 6,614.00 lb / 3,000 kg
Ballast 3,174.00 lb / 1,440 kg
Ballast Type Lead
Sail Area (Reported) 364.00 ft² / 33.82 m²
Design & Construction
Hull Type Fin w/spade rudder
Rigging Type Masthead Sloop
Construction Ply/single chine
Designer E. G. van de Stadt
First Built 1965
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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
16.58
Ballast/Displacement Ballast to Displacement ratio shows what percentage of the boat's total weight is ballast. Higher values generally mean better initial stability and stiffer sail carrying.
30–35% — Typical cruiser35–45% — Stiff performance boatOver 45% — Racing oriented
47.99
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
206.29
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
22.36
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
1.82
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. 6.60 kn
S# (Speed Number) The Speed Number (S#) is a quick performance index. Higher values indicate a faster, more powerful design relative to its size.
Under 3.0 — Slow cruiser3.0–5.0 — Average cruiser5.0–7.0 — Performance cruiserOver 7.0 — Racer
2.58
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. 740.02 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. 16.58
Rig Dimensions
I (Foretriangle Height) 34.28 ft / 10.45 m
J (Foretriangle Base) 10.17 ft / 3.10 m
P (Mainsail Luff) 29.63 ft / 9.03 m
E (Mainsail Foot) 12.80 ft / 3.90 m
SA Fore 174.31 ft² / 16.19 m²
SA Main 189.63 ft² / 17.62 m²
SA Total (100%) 363.94 ft² / 33.81 m²
Est. Forestay Length 35.76 ft / 10.90 m
How It Compares

vs. Bystedt 30, Cape Breton Jeanneau, Capo 30, Sun Odyssey 30I Perf Jeanneau, Sun Odyssey 31 Jeanneau

This boat Similar boats
Dimensions
LOA
Dogger ★
31.0 ft
Bystedt 30
30.0 ft
Cape Breton Jeanneau
29.5 ft
Capo 30
30.0 ft
Sun Odyssey 30I Perf Jeanneau
31.2 ft
Sun Odyssey 31 Jeanneau
31.2 ft
LWL
Dogger ★
24.3 ft
Bystedt 30
25.2 ft
Cape Breton Jeanneau
25.6 ft
Capo 30
25.0 ft
Sun Odyssey 30I Perf Jeanneau
27.6 ft
Sun Odyssey 31 Jeanneau
26.9 ft
Beam
Dogger ★
8.5 ft
Bystedt 30
10.0 ft
Cape Breton Jeanneau
10.3 ft
Capo 30
10.3 ft
Sun Odyssey 30I Perf Jeanneau
10.8 ft
Sun Odyssey 31 Jeanneau
10.8 ft
Displacement
Dogger ★
6 lbs
Bystedt 30
7 lbs
Cape Breton Jeanneau
7 lbs
Capo 30
7 lbs
Sun Odyssey 30I Perf Jeanneau
9 lbs
Sun Odyssey 31 Jeanneau
8 lbs
Ballast
Dogger ★
3 lbs
Bystedt 30
3 lbs
Cape Breton Jeanneau
2 lbs
Capo 30
3 lbs
Sun Odyssey 30I Perf Jeanneau
2 lbs
Sun Odyssey 31 Jeanneau
3 lbs
Sail Area
Dogger ★
364 sq ft
Bystedt 30
396 sq ft
Cape Breton Jeanneau
398 sq ft
Capo 30
476 sq ft
Sun Odyssey 30I Perf Jeanneau
484 sq ft
Sun Odyssey 31 Jeanneau
452 sq ft
Performance
SA / Displacement (higher = more powerful)
Dogger ★
16.6
Bystedt 30
16.7
Cape Breton Jeanneau
16.3
Capo 30
20.5
Sun Odyssey 30I Perf Jeanneau
17.3
Sun Odyssey 31 Jeanneau
16.9
Ballast / Disp (higher = stiffer)
Dogger ★
48.0 %
Bystedt 30
43.2 %
Cape Breton Jeanneau
35.7 %
Capo 30
41.7 %
Sun Odyssey 30I Perf Jeanneau
26.3 %
Sun Odyssey 31 Jeanneau
35.0 %
Comfort Ratio (higher = more comfortable offshore)
Dogger ★
22.4
Bystedt 30
20.0
Cape Breton Jeanneau
Capo 30
18.7
Sun Odyssey 30I Perf Jeanneau
Sun Odyssey 31 Jeanneau
20.1
Capsize Screening (lower = safer)
Dogger ★
1.82
Bystedt 30
2.06
Cape Breton Jeanneau
Capo 30
2.14
Sun Odyssey 30I Perf Jeanneau
Sun Odyssey 31 Jeanneau
2.10
Displacement / Length (lower = lighter)
Dogger ★
206
Bystedt 30
207
Cape Breton Jeanneau
205
Capo 30
205
Sun Odyssey 30I Perf Jeanneau
202
Sun Odyssey 31 Jeanneau
202
Hull Speed
Dogger ★
6.6 kts
Bystedt 30
6.7 kts
Cape Breton Jeanneau
Capo 30
6.7 kts
Sun Odyssey 30I Perf Jeanneau
Sun Odyssey 31 Jeanneau
7.0 kts
Speed Number (higher = faster)
Dogger ★
2.6
Bystedt 30
2.6
Cape Breton Jeanneau
Capo 30
3.0
Sun Odyssey 30I Perf Jeanneau
Sun Odyssey 31 Jeanneau
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