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Cc 27 Mk Iii
Designer: Rob Ball  ·  Builder: C&C Yachts  ·  First built: 1974
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About the Cc 27 Mk Iii

Finding comprehensive information about the Cc 27 Mk III proves challenging, as this sailboat appears to be a relatively obscure model with limited documentation available. What we do know suggests this represents the third iteration or mark of a 27-foot sailboat, likely designed for recreational sailing applications. Based on the naming convention and size class, this vessel would typically fall into the coastal cruising and club racing category. Twenty-seven-foot sailboats of this era generally offered a practical balance between performance and livability, making them suitable for weekend cruising adventures and local regatta participation. Without detailed specifications readily accessible, potential buyers should conduct thorough research directly with previous owners, yacht brokers familiar with the model, or sailing communities that might have experience with this particular design. The scarcity of available information could indicate limited production numbers, regional distribution, or simply that this model predates widespread digital documentation. For sailors considering this boat, arranging a professional survey becomes even more critical given the limited reference material available. Speaking with marine surveyors experienced in boats from this manufacturer and era would provide valuable insights into build quality, common maintenance issues, and overall seaworthiness that specification sheets cannot convey.

Core Dimensions
LOA (Length Overall) 27.86 ft / 8.49 m
LWL (Waterline Length) 22.86 ft / 6.97 m
Beam 9.16 ft / 2.79 m
Max Draft 4.75 ft / 1.45 m
Displacement 5,500.00 lb / 2,495 kg
Ballast 2,116.00 lb / 960 kg
Sail Area (Reported) 344.00 ft² / 31.96 m²
Design & Construction
Hull Type Fin w/spade rudder
Rigging Type Masthead Sloop
Construction FG
Designer Rob Ball
Builder C&C Yachts
First Built 1974
Last Built 1981
Owner Reviews

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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
17.72
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
18.26
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
2.08
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. 6.41
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
2.88
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. 748.2
Rig Dimensions
I (Foretriangle Height) 37.0
J (Foretriangle Base) 11.75
P (Mainsail Luff) 31.0
E (Mainsail Foot) 10.0
SA Fore 217.38
SA Main 155.0
How It Compares

vs. Islander 28, Mirage 27 Perry, Tanzer 85

This boat Similar boats
Dimensions
LOA
Cc 27 Mk Iii ★
27.9 ft
Islander 28
27.9 ft
Mirage 27 Perry
27.9 ft
Tanzer 85
27.9 ft
LWL
Cc 27 Mk Iii ★
22.9 ft
Islander 28
23.1 ft
Mirage 27 Perry
21.7 ft
Tanzer 85
23.8 ft
Beam
Cc 27 Mk Iii ★
9.2 ft
Islander 28
9.8 ft
Mirage 27 Perry
9.3 ft
Tanzer 85
9.5 ft
Displacement
Cc 27 Mk Iii ★
5 lbs
Islander 28
7 lbs
Mirage 27 Perry
5 lbs
Tanzer 85
7 lbs
Ballast
Cc 27 Mk Iii ★
2 lbs
Islander 28
3 lbs
Mirage 27 Perry
2 lbs
Tanzer 85
3 lbs
Sail Area
Cc 27 Mk Iii ★
344 sq ft
Islander 28
361 sq ft
Mirage 27 Perry
313 sq ft
Tanzer 85
Performance
SA / Displacement (higher = more powerful)
Cc 27 Mk Iii ★
17.7
Islander 28
15.8
Mirage 27 Perry
16.7
Tanzer 85
Ballast / Disp (higher = stiffer)
Cc 27 Mk Iii ★
Islander 28
42.9 %
Mirage 27 Perry
42.3 %
Tanzer 85
40.5 %
Comfort Ratio (higher = more comfortable offshore)
Cc 27 Mk Iii ★
18.3
Islander 28
21.0
Mirage 27 Perry
17.6
Tanzer 85
Capsize Screening (lower = safer)
Cc 27 Mk Iii ★
2.08
Islander 28
2.06
Mirage 27 Perry
2.14
Tanzer 85
Displacement / Length (lower = lighter)
Cc 27 Mk Iii ★
Islander 28
254
Mirage 27 Perry
228
Tanzer 85
246
Hull Speed
Cc 27 Mk Iii ★
6.4 kts
Islander 28
6.4 kts
Mirage 27 Perry
6.2 kts
Tanzer 85
Speed Number (higher = faster)
Cc 27 Mk Iii ★
2.9
Islander 28
2.0
Mirage 27 Perry
2.4
Tanzer 85
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