Name: Seaforth 24
Brand: Seaforth

Sailing Performance & Handling

Under sail, the Seaforth 24 behaves more like a much larger blue-water vessel than a typical trailerable sloop. With a displacement-to-length (D/L) ratio of approximately 382, it is categorized as an "ultra-heavy cruiser" for its size. This weight, combined with a traditional long keel, results in exceptional tracking—often described by owners in technical forums as moving like a "freight train" once the boat finds its groove. However, the trade-off for this stability is a relatively low sail area-to-displacement (SA/Disp) ratio of roughly 12.8, which indicates the boat can be sluggish in light air.

In his editorial evaluation in The Sailor's Book of Small Cruising Sailboats, author Steve Henkel noted that while the design is underpowered for light-wind regions, it is a "well-made, pretty vessel" capable of coastal passages that would intimidate lighter designs. The boat is remarkably stiff, benefitting from a ballast ratio of 38% (1,600 lbs of ballast against a 4,200 lb displacement). Owners report that the Seaforth 24 remains balanced in a blow, requiring only a light touch on the tiller even when heeled. Its shallow draft of just 2.5 feet makes it an ideal candidate for "creek crawling" and exploring thin-water anchorages that are inaccessible to fin-keel contemporaries.

Interior Comfort & Variations

The interior of the Seaforth 24 is designed for the cruising couple, prioritizing structural integrity over open-concept living. The layout features a double V-berth in the forward cabin and a compact galley located on the port side, equipped with a single-burner stove and a small sink. Because the hull is "built down" to accommodate the long keel, the center of gravity is low, but this limits the vertical space; headroom is restricted to approximately 52 inches (4'4"), necessitating a seated or hunched posture for most adults.

Two primary variations exist concerning the vessel's propulsion. Early models were often equipped for outboard power via a transom-mounted bracket or a motor well, while later production units built by Precision Boat Works frequently featured a Renault RC8D 8-hp diesel inboard. The addition of the inboard diesel significantly altered the boat's trim and storage capacity, as the engine occupied the space beneath the companionway, further reinforcing the boat's identity as a serious, albeit small, cruiser.

Known Issues & Buyer’s Checklist

Prospective buyers should approach a Seaforth 24 with a focus on age-related structural maintenance common to 1970s fiberglass construction:

Waterline Trim: Owners have noted that models equipped with the Renault diesel inboard can appear "bow heavy" on the waterline. This is often attributed to the weight distribution of the engine and internal tankage; buyers should check if previous owners have added compensating ballast aft.
Deck Core Integrity: Like many boats of this era, the Seaforth 24 utilizes a balsa-cored deck. Any soft spots, particularly around chainplates or the bowsprit attachment, may indicate water intrusion and delamination.
Osmotic Blistering: There are documented instances of osmotic blisters in older Seaforth hulls. High-quality examples often feature a barrier coat, which should be verified during a survey.
Engine Parts Availability: If the vessel retains the original Renault RC8D diesel, parts can be difficult to source. Buyers should evaluate the mechanical health of the inboard or consider the cost of a modern repower or conversion to an outboard.

Community & Resources

The legacy of the Seaforth 24 is preserved through the ongoing support of Precision Boat Works, which continues to provide replacement parts and technical guidance for its discontinued models. While there is no dedicated Seaforth-only association, the community is largely integrated into broader Precision owner groups and the Small-Boat Cruisers networks, where technical wikis often detail Stephen Seaton’s design contributions.