Moody 31 Mk II Information, Review, Specs

Sailing Performance & Handling

The Moody 31 Mk II is frequently described as a "stiff" and "forgiving" yacht, characteristics attributed to its moderate displacement and well-distributed ballast. Unlike many modern lightweight cruisers, the 31 Mk II utilizes a masthead sloop rig that provides a predictable feel in a blow. According to editorial reviews by Yachting Monthly, the boat handles remarkably well under power and sail, particularly in its fin-keel configuration, which offers superior lift and tracking compared to the twin-keel (bilge) version.

The twin-keel variant, however, was exceptionally popular in the UK and Northern Europe, as it allowed the boat to dry out in tidal harbors. While the bilge keel version sacrifices a few degrees of pointing ability and suffers from slightly more leeway in light airs, the hull's generous beam helps maintain stability. The boat’s Displacement/Length ratio suggests a cruiser designed for sea-kindliness rather than outright speed; it is a "plodder" in the best sense of the word, maintaining momentum through a chop where lighter boats might be slowed down. The cockpit is deep and well-protected, giving the helmsman a sense of security that is often lacking in more open, modern designs.

Interior Comfort & Variations

The interior of the Moody 31 Mk II was revolutionary for its time, maximizing the 10' 6" beam to create a living space that feels significantly larger than 31 feet. The Mk II layout typically features a dedicated aft cabin with a double berth—a luxury in the early 80s for a boat of this size—alongside a functional V-berth forward. The main saloon utilizes a central folding table with twin settees that can double as sea berths.

One of the primary internal upgrades in the Mk II over the Mk I was the refinement of the galley and the inclusion of more robust woodwork. The L-shaped galley is positioned to port, featuring a two-burner stove, oven, and refrigerated cool box. Opposite the galley sits a proper, forward-facing navigation station, a feature often omitted in contemporary 30-footers. The heads are located aft to starboard, positioned conveniently near the companionway for use as a "wet locker" during heavy weather. Interior finishes typically consist of teak veneers and solid wood trim, which have aged better than many of the contemporary "production" yachts from the same era.

Popular Mentions & Media

While the Moody 31 Mk II hasn't been the centerpiece of major cinema, it is a frequent star of long-distance cruising vlogs and technical sailing literature due to its ubiquity in the "starter bluewater" category. It is often cited in the Moody Owners Association archives as the ideal entry-level yacht for North Sea and Cross-Channel cruising. Its reputation for durability has made it a favorite subject for "Refit Diary" style content in European sailing magazines, where it is often compared favorably against modern hulls for its thickness of GRP layup.

Known Issues & Buyer’s Checklist

Prospective buyers should approach a Moody 31 Mk II with a focus on its aging mechanical and structural systems. While the hulls are generally considered over-engineered, specific "gotchas" have been identified by the owner community:

• Engine Maintenance: Many units were originally fitted with the Volvo Penta 2003 series engine. While reliable, these engines can suffer from "spline wear" on the gearbox input shaft, a costly repair if not caught early.
• Headlining Sag: A common issue in Moodys of this vintage is the failure of the foam backing on the vinyl headlining. If the interior ceiling looks "baggy," it likely requires a labor-intensive replacement.
• Keel Bolts and Gaskets: On twin-keel versions, the joint between the hull and the iron keels should be inspected for "Moody Smile"—a gap at the leading edge that can indicate the need for re-bedding or torqueing the keel bolts.
• Rudder Bearings: The rudder stock bushings can develop play over decades of use. If there is a noticeable "clunk" when moving the tiller or wheel, the bushings likely need replacement to prevent vibration.
• Osmosis: While Marine Projects used high-quality resins, some early hulls have shown signs of osmotic blistering. A moisture meter reading of the hull below the waterline is standard protocol for this model.

Community & Resources

The primary hub for technical data and historical records is the Moody Owners Association. This organization maintains an extensive archive of original brochures, wiring diagrams, and a "Technical Library" specifically for the 31 Mk II. They are the authoritative source for sourcing replacement parts that match the original Marine Projects specifications.

The Verdict

Pros:

• Exceptional Build Quality: Built to a standard that exceeds many modern category-B cruisers.
• Spacious Aft Cabin: Offers true "two-cabin" privacy in a compact, easy-to-slip footprint.
• Seaworthiness: A Bill Dixon hull that handles heavy weather with predictable, safe motions.
• Resale Value: A highly liquid asset in the European market due to its enduring reputation.

Cons:

• Dated Performance: Will not keep up with modern "performance cruisers" in light air.
• Aesthetic: The high coachroof and "chunky" lines prioritize volume over sleekness.
• Maintenance Debt: Many examples require updates to electronics, rigging, and headliners due to their age.