Step inside the companionway, and the boat's clever interior packaging immediately becomes apparent. While headroom is naturally limited by the boat's compact dimensions, the layout maximizes its 7.67-foot beam. Russell Marine utilized a molded fiberglass liner to structure the interior, finishing it with classic 1970s teak veneers and joinery to soften the aesthetic. Typically arranged with a V-berth forward, a convertible dinette to port, a compact galley, and a starboard quarter berth, it offers sleeping accommodations for four adults in cozy, functional quarters. The overall build quality is respectable for a production boat of its era, striking a balance between structural durability and the lightweight requirements of a true trailerable vessel.
Variations & Configurations
Throughout its production run under Russell Marine (which later fully transitioned its branding to Jaguar Yachts), the Alacrity 670 was offered in several distinct configurations to suit differing regional sailing conditions. The rig was standard as a masthead sloop. This configuration offered a simple, reliable sail plan that carried its center of effort lower than a fractional rig, helping to mitigate the heeling tendencies of its light hull.
The primary variations lay beneath the waterline. While the American Catalina 22 was famous for its swing keel, Russell Marine adapted the Alacrity 670 for European waters with three distinct keel arrangements:
- The Swing Keel: Featuring a heavy, pivoting cast-iron blade housed in a fiberglass trunk. This version offered a minimal draft when raised, making it exceptionally easy to trailer and launch on shallow ramps.
- The Twin (Bilge) Keels: Extremely popular in the United Kingdom and tidal regions of Northern Europe. This configuration allowed the boat to "take the ground" and stand completely upright on drying mud moorings during low tides.
- The Fin Keel: A shallow-draft fixed fin keel variant that eliminated the mechanical complexity of the swing keel while improving pointing ability.
An additional comfort-focused factory option was the "pop-top" companionway hatch cover. This innovative mechanism allowed the entire middle section of the coachroof to be raised on gas struts or scissor hinges while at anchor, providing full standing headroom in the main cabin and vastly improving ventilation.
Sailing Performance & Handling
The physical performance of the Alacrity 670 is highly dictated by its modern, lightweight design ratios. With a displacement of only 2,250 lbs and a generous sail area, the boat boasts an impressive Sail Area to Displacement (SA/Disp) ratio of 19.1. This indicates a highly responsive, easily driven hull that excels in light-to-moderate air, accelerating quickly out of tacks and maintaining speed in light breezes where heavier pocket cruisers of the era stall.
However, this responsiveness comes at the cost of heavy-weather comfort and ultimate stability. The boat’s low Comfort Ratio of 11.53 points to a very lively, motion-sensitive ride in open water. With its light displacement-to-length (Disp/LWL) ratio of 139.07, the Alacrity 670 lacks the momentum and mass to easily punch through a steep head chop, meaning it will tend to climb and crash over waves rather than slice through them.
Furthermore, the boat's Capsize Screening Ratio of 2.34 places it firmly outside the realm of serious offshore voyaging (where a score of 2.0 or lower is typically required). It behaves like a modern dinghy: initially tender, stiffening up once it heels to about 15 degrees, but lacking the deep ballast reserve of a heavy-keeled ocean passage-maker. Under sail, it requires active mainsheet management and early reefing—typically when the true wind crests 12 to 15 knots—to prevent excessive heeling and heavy helm pressure.
Market Snapshot & Economics
Decades after its introduction, the Alacrity 670 and its Jaguar 22 brethren remain some of the most economical entry points into cabin-boat sailing on the European brokerage market. They command modest prices and are relatively plentiful, though their condition varies dramatically. Because many of these vessels spent winters—and often decades—dry-stored on trailers in boatyards or gardens, structural integrity is often better preserved than in boats left permanently afloat.
The real economic advantage of the Alacrity 670 lies in its shared DNA with the Catalina 22. Because the Catalina 22 has one of the largest owner networks and active aftermarket support systems in the world, parts availability is remarkably high. Sails, rudder assemblies, rigging components, and mechanical hardware designed for the early-generation Catalina 22 are often directly compatible or easily adapted to the Alacrity 670. This makes restoration and DIY maintenance exceptionally cheap compared to orphan designs of the same era.
Known Issues & Triage
The most critical structural and safety focus on any swing-keel Alacrity 670 is the keel pivot assembly and lifting mechanism. Over years of immersion, the heavy cast-iron swing keel can suffer from galvanic corrosion, which is accelerated if the boat is moored in salt water.
- Keel Pivot Pin and Hanger Wear: The keel pivots on a stainless-steel pin supported by cast bronze or brass hangers bolted into a recess in the hull. Over time, the pivot hole through the cast iron keel can wear oblong, causing "keel clank" while sailing. In extreme, neglected cases, this wear can migrate to the edge of the casting, causing the heavy keel to tear free and drop out entirely. Any buyer of a swing-keel variant must inspect the hangers, pivot pin, and casting for wear.
- Keel Winch, Cable, and Attachment Lug: The keel is raised via a stainless-steel wire cable connected to an interior winch. The cable and the attachment eye (lug) cast into the trailing edge of the keel are primary failure points. If the cable snaps or the lug breaks, the keel will swing down violently, potentially cracking the fiberglass keel trunk.
- Keel Trunk Crazing & Structural Sagging: When trailer-stored, the weight of the boat must be properly supported by the trailer bunks, while the keel should rest securely on a designated tray or roller. If the trailer is poorly adjusted and the weight of the boat is borne primarily by the fiberglass keel stub, the hull structure can sag (often described by surveyors as the "pudding" or "sagging bottom" effect).
- Balsa Deck Delamination: The deck construction utilizes a balsa-wood core sandwiched between fiberglass layers. If hardware like stanchions, winches, or handrails were not periodically re-bedded, water ingress will rot the balsa core, leading to spongy decks and compromised hardware backing.
Modernization & Upgrades
Modern owners are keeping these classic pocket cruisers relevant through several target upgrades:
- Keel Pivot Re-bushing: Machining out the worn pivot hole in the cast-iron keel and installing a durable sleeve (such as a Delrin or bronze bushing) to eliminate slop and ensure the keel remains securely centered in its trunk.
- Dyneema Keel Strop Conversion: Replacing the traditional stainless steel wire lifting cable with high-modulus Dyneema line. Dyneema eliminates the risk of fish-hooking (broken wire strands), does not suffer from salt-water corrosion, and is much quieter when winched.
- Structural Keel Box Reinforcement: Glassing in additional fiberglass layers and installing G10 backing plates around the keel hanger bolts inside the bilge to combat hull flexing and prevent stress-induced leaks.
- Electric Outboard Propulsion: Because the Alacrity 670 has a light 2,250 lb displacement and is primarily used for daysailing and lake cruising, many owners are ditching heavy, finicky small gas outboards in favor of lightweight electric outboards. Modern 3HP-equivalent electric outboards provide ample power to reach hull speed in calm conditions while shedding weight from the transom and eliminating fuel storage in the lazarette.
The Verdict
The Alacrity 670 is a cleverly designed, highly functional pocket cruiser that brings the versatility and massive community support of the American Catalina 22 to European shores. While its light weight makes it tender in a blow and limits its cruising grounds to inshore waters, its trailerability and easy handling make it an exceptional platform for beginners, lake sailors, and coastal explorers looking for maximum utility on a minimal budget.
Pros
- Excellent trailerability and easy ramp launching.
- Strong sailing performance in light air and responsive helm.
- Massive aftermarket parts availability due to Catalina 22 interchangeability.
- Pop-top companionway option provides standing headroom at anchor.
- Bilge keel variant is uniquely suited for tidal mud moorings.
Cons
- Motion is very lively and tender in rough chop.
- High capsize screening ratio limits the boat strictly to coastal and inland waters.
- Swing-keel versions require intensive, high-consequence mechanical maintenance.
- Hull structure around the keel trunk can sag if stored on an unsupportive trailer.
