The Independence stood apart from the performance-first “E” series models that dominated the Ericson Yachts factory at the time. It traded outright speed for a steadier blue-water brief. With a hand-laid, solid-fibreglass hull and lead ballast encapsulated within the fibreglass keel, it reads as an “Ocean” class vessel built for offshore use rather than the racecourse.
Design and Construction
Bruce King gave the Independence a double-ended “canoe” stern and a long fin keel paired with a transom-hung rudder. This arrangement eliminates the need for a rudder post and stuffing box inside the boat. Unlike an internal rudder, all its components—the gudgeons, pintles, and tiller head—are visible and accessible, making them easier to inspect and maintain at sea.
The canoe stern further enhances safety. In a following sea, waves split and move past the hull rather than lifting the stern and causing a broach.
The Independence displaces 11,700 lbs and carries 4,500 lbs of lead ballast, giving it a 38% ballast-to-displacement ratio. The boat is stiff and provides a safe, upright sailing experience. Its capsize screening value of 1.87 is well below the 2.0 safety limit for offshore work.
Rig and Handling
Most Independence boats were cutter-rigged, though the fleet includes a few sloop variants. The cutter arrangement was chosen to make the boat easier to manage from the cockpit by dividing the sail area into smaller, more manageable pieces.
A 215 ft² mainsail contributes to a total sail area of 513 ft². Combined with a sail-area-to-displacement ratio of 15.9, that gives the boat moderate sail power that excels in 15 knots or more.
A displacement-to-length ratio of 382 reflects the boat’s heavy hull, high momentum, and storage capacity. It won’t surf or plane, but it tracks with a steady persistence that lighter hulls can’t match. The very high comfort ratio of 35.4 ensures a predictable, easy motion at sea. The design is also judged capable of handling significant sea states because of its weight and high limit of positive stability.
Accommodations and Tankage
Below, the Independence feels larger than its 31-foot length suggests, largely because of its 10'6" beam. The traditional layout places a V-berth forward, followed by a head and hanging locker. The main saloon has a settee and pilot berth, while the galley is usually U-shaped and located near the companionway.
Water capacity is about 50 gallons, while fuel capacity is around 20 gallons. Those are modest figures for extended cruising.
The cockpit is deep and secure. A large bridge deck helps keep water out of the cabin.
Known Issues
Prospective owners should inspect the transom gudgeon mounting points on the stern post for stress cracks. Deck delamination is another known concern, focused on the balsa core around the bowsprit and mast step.
Rotting structural plywood where the chainplates attach is a critical issue. Many older boats also retain their original Universal engines.
Refits and Ownership
For an owner voyaging far from support, the transom-hung rudder’s external hardware is a practical advantage. Worn pintles or gudgeons can be assessed and serviced without hauling the boat or cutting into the hull.
The encapsulated lead ballast avoids the maintenance exposure associated with bolt-on keel lead, while the solid-fibreglass hull is straightforward to survey. The cutter rig’s divided sail plan also lends itself to modest, useful upgrades in sheet travel and reefing without disturbing the boat’s essential character.
The Verdict
The Ericson 31 Independence is a deliberately old-fashioned blue-water cruiser: heavy, stiff, and forgiving, with a canoe stern and external rudder that put safety and serviceability ahead of pace. It tracks with stubborn persistence rather than sparkle, and its accommodations are roomy for the length without pretending to make it a larger boat.
Pros
- High ballast-to-displacement ratio and a capsize screening value below 2.0 for offshore use
- Transom-hung rudder with fully visible, maintainable hardware
- Canoe stern that splits following seas for resistance to broaching
- Roomy interior for a 31-footer, thanks to the 10'6" beam
Cons
- Modest tankage and moderate sail power limit range and light-air performance
- Balsa-cored deck and chainplate plywood are known failure points
- Heavy displacement means the boat won’t surf or plane
