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Chance 30 30 Allied
Designer: Britton Chance  ·  Builder: Allied Boat Co.  ·  First built: 1971
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About the Chance 30 30 Allied

Designed as a collaboration between Britton Chance Jr. and Allied Boat Company, this 30-foot sailboat represents an interesting chapter in American production sailing from the late 1970s and early 1980s. The partnership brought together Chance's racing-oriented design philosophy with Allied's established manufacturing capabilities, creating a boat that aimed to bridge performance and practicality. The hull design reflects Chance's background in competitive sailing, featuring clean lines and proportions that suggest decent sailing performance while maintaining the interior volume needed for weekend cruising or coastal adventures. Allied's construction approach emphasized solid fiberglass layup techniques typical of the era, prioritizing durability over weight savings. This model appears well-suited for coastal cruising, club racing, and day sailing, offering enough accommodation for short-term cruising while retaining the sailing characteristics that make longer passages enjoyable. The Chance 30 30 Allied would appeal to sailors seeking a boat with racing DNA that doesn't sacrifice comfort entirely. While not as widely known as some contemporary designs, boats from this collaboration generally earned respect for their seaworthiness and balanced sailing characteristics, making them worthy candidates for sailors prioritizing performance-oriented coastal cruising.

Core Dimensions
LOA (Length Overall) 30.58 ft / 9.32 m
LWL (Waterline Length) 25.00 ft / 7.62 m
Beam 10.00 ft / 3.05 m
Max Draft 5.25 ft / 1.60 m
Displacement 11,200.00 lb / 5,080 kg
Ballast 6,500.00 lb / 2,948 kg
Sail Area (Reported) 483.00 ft² / 44.87 m²
Design & Construction
Hull Type Fin with rudder on skeg
Rigging Type Masthead Sloop
Construction FG
Designer Britton Chance
Builder Allied Boat Co.
First Built 1971
Last Built 1974
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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
15.49
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
30.21
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
1.79
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. 6.7
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
1.49
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. 893.28
Rig Dimensions
I (Foretriangle Height) 42.0
J (Foretriangle Base) 14.0
P (Mainsail Luff) 36.85
E (Mainsail Foot) 10.25
SA Fore 294.0
SA Main 188.86
How It Compares

vs. Cape Dory 30 Mk Ii, Nicholson 31, Pearson 31 2, Seawind Allied, Tanzer 31

This boat Similar boats
Dimensions
LOA
Chance 30 30 Allied ★
30.6 ft
Cape Dory 30 Mk Ii
30.5 ft
Nicholson 31
30.5 ft
Pearson 31 2
30.7 ft
Seawind Allied
30.5 ft
Tanzer 31
30.6 ft
LWL
Chance 30 30 Allied ★
25.0 ft
Cape Dory 30 Mk Ii
24.2 ft
Nicholson 31
24.2 ft
Pearson 31 2
25.4 ft
Seawind Allied
24.0 ft
Tanzer 31
25.0 ft
Beam
Chance 30 30 Allied ★
10.0 ft
Cape Dory 30 Mk Ii
10.5 ft
Nicholson 31
10.2 ft
Pearson 31 2
10.7 ft
Seawind Allied
9.3 ft
Tanzer 31
10.5 ft
Displacement
Chance 30 30 Allied ★
11 lbs
Cape Dory 30 Mk Ii
10 lbs
Nicholson 31
13 lbs
Pearson 31 2
10 lbs
Seawind Allied
12 lbs
Tanzer 31
8 lbs
Ballast
Chance 30 30 Allied ★
6 lbs
Cape Dory 30 Mk Ii
4 lbs
Nicholson 31
4 lbs
Pearson 31 2
3 lbs
Seawind Allied
4 lbs
Tanzer 31
3 lbs
Sail Area
Chance 30 30 Allied ★
483 sq ft
Cape Dory 30 Mk Ii
Nicholson 31
484 sq ft
Pearson 31 2
493 sq ft
Seawind Allied
502 sq ft
Tanzer 31
468 sq ft
Performance
PHRF Rating (lower = faster)
Chance 30 30 Allied ★
Cape Dory 30 Mk Ii
192 s/nm
Nicholson 31
194 s/nm
Pearson 31 2
180 s/nm
Seawind Allied
Tanzer 31
165 s/nm
SA / Displacement (higher = more powerful)
Chance 30 30 Allied ★
15.5
Cape Dory 30 Mk Ii
Nicholson 31
14.1
Pearson 31 2
17.1
Seawind Allied
15.4
Tanzer 31
18.3
Ballast / Disp (higher = stiffer)
Chance 30 30 Allied ★
Cape Dory 30 Mk Ii
40.0 %
Nicholson 31
Pearson 31 2
38.0 %
Seawind Allied
35.0 %
Tanzer 31
39.8 %
Comfort Ratio (higher = more comfortable offshore)
Chance 30 30 Allied ★
30.2
Cape Dory 30 Mk Ii
Nicholson 31
35.0
Pearson 31 2
24.5
Seawind Allied
36.9
Tanzer 31
21.0
Capsize Screening (lower = safer)
Chance 30 30 Allied ★
1.79
Cape Dory 30 Mk Ii
Nicholson 31
1.74
Pearson 31 2
1.98
Seawind Allied
1.62
Tanzer 31
2.08
Displacement / Length (lower = lighter)
Chance 30 30 Allied ★
Cape Dory 30 Mk Ii
331
Nicholson 31
Pearson 31 2
271
Seawind Allied
387
Tanzer 31
237
Hull Speed
Chance 30 30 Allied ★
6.7 kts
Cape Dory 30 Mk Ii
Nicholson 31
6.6 kts
Pearson 31 2
6.8 kts
Seawind Allied
6.6 kts
Tanzer 31
6.7 kts
Speed Number (higher = faster)
Chance 30 30 Allied ★
1.5
Cape Dory 30 Mk Ii
Nicholson 31
0.9
Pearson 31 2
2.0
Seawind Allied
1.0
Tanzer 31
2.4
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