Design and Construction
The Corvette reads as a traditional vessel even today, with a relatively narrow beam, long overhangs, and a graceful sheer above a long keel. At 31 feet 2½ inches overall and 22 feet 6 inches on the waterline, with a 9-foot 1-inch beam, she displaces 8,545 lbs and carries her ballast as 4,000 lbs of bolted-on lead placed just forward of the centreboard, where it absorbs the hard knock of grounding in the shoal waters she was designed to sail bolt-on lead just forward of the centreboard. The centreboard trunk sits within the keel and does not intrude into the accommodation above the floorboards. Her decks are wide, with outboard shrouds and a large foredeck, and the deckhouse is of moderate size; the early boats were built with a balsa-core deck, an early use of fiberglass/core technology.
Rig and Handling
The Corvette’s masthead rig splits a moderate 444 sq. ft. almost evenly between mainsail and fore triangle, and the tiller sprouts from the cockpit sole of an eight-foot cockpit with straight benches. On the race course the design proved quick: in the 1968 Lipton Cup off Miami, sailed in fluky 5-to-10-knot air, the boat Elektra finished first in Class D and 24th among a fleet of more than 100, and later that season Elektra II took second overall in the 184-mile Miami-Nassau race. The shallow rudder, however, will lose control when the boat is pushed hard in brisk winds on a broad reach, making broaches a common occurrence.
Accommodations
Below, the Corvette offers standing headroom and berths for four, with the ability to sleep up to five aboard. The interior was spartan, though functional, and the unlined hull made later access to structure straightforward. The eight-foot cockpit and moderate deckhouse reflect a style oriented to a couple or small family rather than lavish cruising comfort.
Known Issues
Some owners complain of rotting core material in the deck due to inadequate backing pieces and sealing, though because the hulls were not lined it is an easy job to cut out the glass and core from below decks. Many owners are finding that after twenty years the ferrous centreboards must be removed for rust treatment and protective coating, and the pins and pennant need replacing. The shallow rudder’s tendency to let go on a hard broad reach remains the principal handling caveat.
Refits and Ownership
All Corvettes left the yard with the Universal Atomic 4 gasoline engine and direct drive. Some owners converted to diesel; others fitted a reduction gear to the Atomic 4 and increased propeller diameter on a slower turning shaft for more push. A loyal and active owners association supports the class, and the boats are trailerable with daytime wide-load permission.
The Verdict
The Corvette 31 is a thoughtfully conceived shoal-draft cruiser-racer whose CCA rule pedigree produced a heavy, well-ballasted hull that sails capably in light air and holds up offshore. Her centreboard versatility, straightforward structure, and active class community make her a practical classic, while deck-core rot and ferrous centreboard maintenance are the costs of ownership.
Pros
- Shoal 3 ft 3 in draft with board up, 7 ft with board down for versatile gunkholing
- Well-ballasted lead keel placed to survive grounding
- Proven race record in mixed light and heavy air
- Unlined hull eases internal repairs
Cons
- Balsa-core deck prone to rot from poor sealing
- Ferrous centreboard and pins need overhaul after two decades
- Shallow rudder invites broaches on hard broad reaches
- Spartan interior by modern standards
