C&C 27 Mk III

About the C&C 27 Mk III

Researched from public sources for this model. Any individual boat may have been modified or repowered — confirm before relying on any figure.

Built

1974–1981

Builder

C&C Yachts

Designer

Robert Ball

Length

27.86 ft

Waterline

22.86 ft

Beam

9.16 ft

Draft

4.5 ft

Displacement

5,500 lb

Ballast

2,116 lb

Hull

fiberglass

Hull / keel

fin keel

Rig

sloop

Propulsion

inboard

Fuel

20 gal

Water

24 gal

Stern thruster

not fitted

Steering

tiller

Sources disagree on Yanmar diesel model — left blank rather than guessed.

The Mark III name was applied retroactively by owners; boats were sold simply as the C&C 27. Hull numbers are given as 451/452-914 by the owners association and 435-915 by sailboatdata. The association says the Mark III came from a new mold with a longer cockpit/stern, deeper keel, less ballast and a taller rig. Wheel steering became a popular option in the mid-1970s (1975 per the association, 1976 (sailboatdata)). Diesel became available in 1978 and a single-cylinder Yanmar (SYP12 (sailboatdata)) was standard by the end of the run; many boats have been repowered. Shoal-draft keel (4.0 ft) was offered. Hull is solid glass (Practical Sailor says the 27 has no hull coring); deck is balsa-cored. External lead ballast through-bolted. The Mark IV (1981-82) and the later, unrelated Mark V (1984-87) are separate versions.

Engines fitted

• Atomic 4 (Universal) gas — gas, single standard
  sailboatdata lists the Universal Atomic 4 gas engine as original equipment for the Mk III (1974-81, hulls 435-915).
  Sources: sailboatdata.com
• Atomic 4 (Universal) — gas standard
• Yanmar SYP12 / 2GM (diesel) — diesel, single factory option
  sailboatdata: diesel power became an option in 1978 and near the end of the Mk III run the Yanmar SYP 12 became standard. Wikipedia's C&C 27 article names a Yanmar 2GM diesel and also dates the diesel option to 1978.
  Sources: sailboatdata.com · en.wikipedia.org

Boats of the same model can differ — check which engines yours actually has before ordering parts.

Generator

No source mentions a generator for the C&C 27 Mk III.

Manuals and brochures online

• Spec sheet C&C 27 Association - Evolution of the C&C 27, Marks I-IV (general specifications by mark and hull number) (1970-1982) — cc27association.com

Hosted by the builder or an owners' association; they own the copyright.

Known problems for this model

• Wet balsa deck core around hardware deck
  The deck is balsa-cored and old bedding on fittings often fails, letting water into the core; rebedding hardware and checking for delamination is a priority.
  practical-sailor.com
• Bulkhead rot at chainplates interior
  Water tracking down the chainplates through the deck can rot the plywood bulkheads they bolt to; inspect where the plates attach.
  practical-sailor.com
• Cracking at stanchion and pulpit bases deck
  Sidedeck laminate is thin at the outboard edges and pulpits lacked backing plates, so look for cracks around stanchion and pulpit bases.
  practical-sailor.com
• Mast compression support rot hull
  Practical Sailor advises checking the interior structure that carries mast compression for rot, along with the deck core.
  practical-sailor.com
• Bulkheads not tabbed to deck hull
  On many C&Cs of this era the bulkheads are not tabbed to the deck, which can let the deck lift as the rig works; relevant if planning offshore use.
  practical-sailor.com

Engines & parts

Other C&C models

• C&C 30 Mk I 1973–1985
• C&C 33 Mk II 1984–1988
• C&C 34 1977–?
• C&C 35 Mk III ?–1987