The Cape George 31 is a quintessential example of the "heavyweight" school of blue-water yacht design, standing as a testament to the enduring collaboration between the lines of naval architect William Atkin and the craftsmanship of Cecil Lange’s Cape George Marine Works. Originally inspired by Atkin’s classic Florence G. design, the 31 was refined for fiberglass construction to provide a formidable offshore platform for solo sailors or couples. Unlike mass-produced coastal cruisers, the Cape George 31 is built with a level of scantlings usually reserved for much larger vessels, featuring a massive full keel and a heavy displacement hull that prioritizes sea-kindliness and ultimate stability over light-air speed. As the entry-level model in a prestigious lineage that includes the Cape George 34, 36, 38, and 45, the 31 is often sought by those who intend to cross oceans rather than hop between marinas.
Cape George 31 Information, Review, Specs

- Make
- Cape George
- Model
- 31
- Builder
- Cape George Marine Works
- Designer
- —
- Number Built
- Production Year(s)
- 1990 - ??
Sailing Performance & Handling
Under sail, the Cape George 31 exhibits the "freight train" momentum characteristic of heavy displacement monohulls. With a displacement-to-length ratio frequently exceeding 400, the boat is remarkably resistant to being bullied by a seaway. It does not "hobby-horse" when punching into a head sea; instead, the fine entry and substantial weight allow it to slice through waves with a rhythmic, predictable motion. This stability makes it an excellent platform for long-distance passage-making, where crew fatigue is the primary enemy.
Handling is defined by its deep full keel and protected aperture-hung rudder. While it tracks exceptionally well—allowing the boat to stay on course with minimal input from a windvane or autopilot—the 31 is not known for its agility in tight quarters. Reversing under power requires a practiced hand, as the prop wash against the large rudder can make backing into a slip a deliberate, sometimes challenging affair. In terms of sail plan, the cutter rig is the standard configuration, providing a versatile array of "gears" for varying wind conditions. In heavy weather, dropping the head-sail and reefing the main while keeping the staysail set allows the 31 to maintain balance and forward progress long after lighter boats have been forced to heave-to.
Interior Comfort & Variations
The interior of the Cape George 31 is a masterclass in traditional maritime ergonomics, though its execution varies more than almost any other production boat. This is because Cape George Marine Works frequently sold these vessels as "hull and deck" kits, allowing owners to complete the interior finish themselves. Consequently, one might find a factory-finished model with exquisite teak joinery and a standard layout, or an owner-finished vessel with unique storage solutions and alternative wood choices like cedar or cherry.
The standard layout typically features a functional offshore galley near the companionway, a dedicated navigation station, and a cozy salon with a drop-leaf table. Headroom is generous for a 31-footer, often exceeding six feet, which prevents the cabin from feeling claustrophobic during long stints at sea. The sibling models, such as the Cape George 34 and 36, offer significantly more volume and often include dedicated master cabins, whereas the 31-foot variant is more focused on "everything in its place" utility. Despite its smaller footprint, the 31 maintains the same heavy-duty bronze ports and robust hardware found on its larger siblings, reinforcing the sense of being inside a "little ship."
Known Issues & Buyer’s Checklist
Prospective buyers of a Cape George 31 must approach the vessel with a "kit-built" mindset, even if the hull itself is indestructible. Because many were finished by individuals rather than the factory, the quality of the systems—specifically electrical wiring and plumbing—can vary wildly. A primary inspection point is the deck-to-hull joint; while the factory utilized a robust mechanical and chemical bond, any owner-installed deck hardware should be checked for proper bedding and core saturation.
The chainplates on the 31 are typically external, which makes inspection easier, but the bolts should be checked for crevice corrosion if the boat has spent years in tropical waters. Furthermore, because these boats are often used for extreme long-distance voyaging, the standing rigging and rudder pintles often show more wear than a typical coastal cruiser of the same age. Finally, ensure the ballast—which is internal lead encapsulated in the keel—shows no signs of "keel smile" or cracking at the interface, though this is a rare occurrence given the builder's over-engineered construction methods.
Community & Resources
Owners of these vessels are supported by a tight-knit and highly technical community. The Cape George Cutters Association serves as a vital repository of knowledge, offering technical drawings, restoration advice, and a registry of existing hulls. Because the builder, Cape George Marine Works, is still active in Port Townsend, owners can often contact the yard directly for original specifications or replacement parts, a rare luxury for boats of this vintage.
The Verdict
The Cape George 31 is a specialized tool designed for a specific purpose: safe, reliable, and comfortable ocean voyaging. It is not a boat for the casual weekend racer or someone looking for modern, open-concept interiors. Instead, it is a vessel for the traditionalist who finds beauty in a straight-laid teak deck and security in a hull that can withstand the rigors of the Southern Ocean.
Pros:
- Exceptional "bulletproof" construction quality.
- Superb tracking and heavy-weather sea-kindliness.
- Highly customizable interiors due to the builder-owner model.
- Strong resale value among the blue-water cruising community.
Cons:
- Heavy and slow in light-air conditions (under 8 knots of wind).
- Difficult to maneuver in reverse under power.
- System quality (wiring/plumbing) depends heavily on the original finisher.
- Small interior volume compared to modern 31-foot coastal cruisers.
Measurements
Construction & Hull
- Construction Material
- Fiberglass
- Hull Type
- Monohull Sailboat
- Keel Type
- Full
- Rudder
- 1x Transom-Hung
- Ballast
- 7800 lbs
- Displacement
- 15835 lbs
- Water Capacity
- -
- Fuel Capacity
- -
Dimensions
- Length Overall (LOA)
- 31 ft
- Waterline Length (LWL)
- 27.5 ft
- Beam
- 9.58 ft
- Draft
- 4.5 ft
- Max Headroom
- -
- Air Draft
- -
Rig & Sails
- Rig Type
- Cutter
- P (Main Luff)
- -
- E (Main Foot)
- -
- I (Foretriangle Height)
- -
- J (Foretriangle Base)
- -
- Forestay Length (est)
- -
- Sail Area
- 634 sqft
Calculations
- Sail Area / Displacement (SA/D) Ratio
- 16.08
- Ballast / Displacement Ratio
- 49.26
- Displacement / Length Ratio (D/L) Ratio
- 339.92
- Comfort Ratio
- 42.26
- Capsize Screening Formula
- 1.53
- Hull Speed
- 7.03 kn