C&C 30 Mk I Sailboat Review, Specs, and Listings

C&C·1973 – 1985·~800 hulls·C&C Yachts
C&C 30 Mk I drawingBuilder drawing
Hull Type
Monohull · fin
Rig
Masthead Sloop
LOA
30' · 9.14 m
Disp.
8,000 lbs · 3,629 kg
First year
1973

The C&C 30 Mk I is one of Canada’s most successful racercruisers. More than 800 were built during a 12year production run from 1973 to 1985—the longest run for a single design version in the marque’s history.

Measurements

Dimensions 01

Length Overall
30 ft
Length on deck
—
Waterline Length
24.92 ft
Beam
10 ft
Draft
5 ft
Maximum Headroom
6.08 ft
Air Draft
42.5 ft

Construction & hull 02

Construction
Fiberglass
Hull Type
Monohull
Keel Type
Fin
Rudder
1× Spade
Ballast
3,450 lbs (Lead)
Displacement
8,000 lbs
Water Capacity
42 gal
Fuel Capacity
20 gal

Rig & sails 03

Rigging Type
Masthead Sloop
Mainsail luff
34 ft
Mainsail foot
11.5 ft
Foretriangle height
39 ft
Foretriangle base
13.5 ft
Forestay Length (estimated)
41.27 ft
Sail Area
459 sqft

Calculations 04

Sail Area to Displacement Ratio
18.36
Ballast to Displacement Ratio
43.13
Displacement to Length Ratio
230.78
Comfort Ratio
21.77
Capsize Screening Ratio
2
Hull Speed
6.69 kn

Patterned after the original C&C 35, the C&C 30 was built in Niagara-on-the-Lake, Ont., by a steady workforce of roughly 250 people. C&C kept the design current through 41 engineering change orders over its production life. Canadian Boating describes it as one of the stiffest C&Cs ever built, as well as a forgiving, comfortable, user-friendly boat that remains easy to handle.

Design and Construction

The hull is a single-moulded, uncored fiberglass unit. The hull later acquired a 2 mm foam core in the bow only for water-damage resistance. The deck has a half-inch balsa core, adding stiffness and insulation with minimal weight gain.

The deck joins the hull on an inward-turned flange, with butyl sealant between the two. Through-bolts passing through a slotted-aluminum toerail secure the joint—a C&C signature.

The swept-back keel is attached with stainless-steel bolts. The original shark-fin profile and spade rudder were revised in 1976 with a technically improved, high-aspect-ratio rudder. Its stock rake carries the trailing edge well aft of the transom.

The boat’s most distinctive exterior feature is the pair of dorade boxes built into the coachroof, one on either side of the mast. Their main purpose is cabin ventilation, but they also stiffen the cabin top and provide flat mounting platforms.

Rig, Cockpit, and Handling

The mast passes through the coachroof and steps on top of the keel. The masthead rig has a single pair of spreaders and all-stainless wire stays and shrouds. The mast sits well aft, opening a large foretriangle typical of a traditional masthead sloop. A split backstay later became available as an alternative to the original single backstay.

The end-boom mainsheet runs on a track just forward of the helm. Primary headsail winches are mounted on the coamings, within reach of either the wheel or tiller.

The boom originally stood 5 ft. 6 in. above the cabin sole. A 1978 design order raised it by one foot for cockpit safety, and the change was applied to subsequent boats.

The deep cockpit and high coamings offer protection, while the pronounced sheer raises the bow’s freeboard and helps keep the foredeck relatively dry in a chop. Testers found the C&C 30 fast and stiff, with a particular appetite for higher wind speeds. In reverse, it has moderate prop walk to port. PHRF ratings range from 174 on San Francisco Bay to 180 on the Chesapeake.

Accommodations

A generous 10-foot beam gives the C&C 30 a comfortable cabin with standing headroom. A later measurement puts headroom in the saloon at 6 ft. 2 in.

Forward are two 6 ft. 4 in. V-berths beneath storage shelves. Immediately aft, the head and vanity are to port, with a hanging locker and shelves to starboard.

In the main cabin, a large dinette occupies the port side, opposite a settee berth to starboard. The galley is divided across the companionway: the cold box and preparation surface are to port, while the stove and sink are opposite to starboard. The cabin sole is finished in textured gelcoat.

Engines, Steering, and Production Changes

The C&C 30 was originally designed for tiller steering. Wheel steering soon became optional and was later standardized, although the pedestal takes up some cockpit-sole space.

Early boats used the Universal Atomic 4 gasoline engine, while some early examples had a one-cylinder Westerbeke diesel. The QM15 Yanmar diesel was offered through hull 675; from hull 676 onward, C&C fitted the Yanmar 2GM.

The eight-stage build took 32 working days. At peak output, the yard completed one boat every four days. This consistent, well-documented production history helps an owner assess the configuration associated with a particular serial number.

Known Issues

At haulout, the boat often shows a slight “smile” at the hull-to-keel joint. This may be cosmetic, but it can also point to loosened fasteners or failed sealant and is worth checking.

Minor water saturation has appeared in the deck’s balsa core around chainplates and other penetrations. This is the expected vulnerability of a cored deck when hardware begins to leak.

The mast step was oak through hull 651 and was prone to weakening. From hull 652 onward, an aluminum casting resisted this problem. Earlier boats therefore merit inspection of both the mast step and the surrounding structure.

The Verdict

The C&C 30 Mk I is a stiff, dry, and approachable racer-cruiser. Its keel-stepped rig, ventilating dorade trunks, and steady program of engineering changes reflect a mature production design.

Its weak points are limited and well understood: leaks into the balsa-cored deck around penetrations, the early oak mast step, and the familiar hull-to-keel “smile.” For a sailor seeking the classic C&C feel without exotic systems, it rewards a careful inspection informed by the boat’s hull number.

Pros

  • Exceptional stiffness and a dry, high-freeboard bow in a chop
  • Keel-stepped masthead rig with a large foretriangle
  • Primary winches within reach of the helm
  • Spacious cabin with standing headroom and a practical split galley
  • Long, well-documented production run with traceable engineering changes

Cons

  • Possible hull-to-keel “smile”
  • Deck-core saturation around leaking penetrations
  • Oak mast step on early hulls is vulnerable to weakening
  • Wheel-steering pedestal encroaches on cockpit-sole space

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