S&S Knockabout 24 Information, Review, Specs

Sailing Performance & Handling

As a Sparkman & Stephens design, the Knockabout 24 is defined by its balance and sea-kindliness, traits that are often missing in modern, flat-bottomed production boats. The hull features a high ballast-to-displacement ratio, typically utilizing a lead keel that provides significant righting moment. This makes the boat exceptionally "stiff," allowing it to carry full sail longer than its contemporaries when the breeze freshens. According to technical notes from the Sparkman & Stephens Association, the design prioritized upwind tracking and a predictable motion in a chop, a necessity for the short-period waves common in the Chesapeake Bay.

The boat utilizes a masthead sloop rig with a generous sail area, allowing it to perform respectably in light air. Under sail, the Knockabout 24 exhibits a "big boat" feel; the helm is responsive without being twitchy, and it tracks with the steady hand one expects from an S&S hull. While it lacks the surfing capabilities of modern sportboats, its ability to maintain momentum through a tack and its forgiving nature in heavy weather make it an ideal platform for both novice sailors and experienced traditionalists.

Interior Comfort & Variations

The interior of the Knockabout 24 is an exercise in functional minimalism, designed as a "pocket cruiser" or weekender rather than a long-term liveaboard. The layout typically features a traditional V-berth forward, followed by two narrow settees in the main salon that double as berths. The cabinetry is often finished in teak or mahogany, reflecting the higher-end aspirations of Tidewater Boats compared to high-volume builders of the 1970s. Headroom is limited—a trade-off for the boat's sleek, low-profile cabin trunk—meaning most adults will find themselves in a "crouch" while below deck.

The model shares its hull and fundamental DNA with the Rainbow 24, another S&S design built in Annapolis. While the Knockabout version includes a full cabin for overnighting, the Rainbow variant was often configured as a day-sailer with a larger, open cockpit and a much smaller "cuddy" cabin. Buyers should be aware that because these boats were often semi-custom or finished to varying standards, interior wood quality and galley configurations (often just a simple slide-out stove and a small sink) can vary significantly between individual hulls.

Known Issues & Buyer’s Checklist

Prospective owners of an S&S Knockabout 24 should approach the purchase with a focus on structural aging typical of 1970s fiberglass construction.

• Deck Core Integrity: Like many boats of this era, Tidewater used balsa-coring in the decks. Over decades, water penetration through improperly bedded stanchions or cleats can lead to delamination and "soft spots." A thorough percussion test with a phenolic hammer is essential.
• Chainplate Inspection: The stainless steel chainplates are prone to crevice corrosion where they pass through the deck. Because these are critical to the rig's stability, they should be pulled and inspected if there is any sign of rust streaking on the interior bulkheads.
• Rudder Bearings: The spade rudder or skeg-hung rudder (depending on the specific production year) can develop play in the bearings. If there is significant "clunking" when moved by hand on the hard, the bushings may require replacement.
• Keel Bolts: While S&S designs are robust, the transition between the lead keel and the fiberglass stub (the "smile") should be inspected for signs of movement or weeping, which could indicate a need to torque or replace keel bolts.

Community & Resources

The primary hub for technical data and historical context for this vessel is the Sparkman & Stephens Association, which maintains design archives for all S&S-penned hulls. Because the builder, Tidewater Boats, is long defunct, owners often congregate in broader Annapolis-based heritage sailing groups or S&S design forums to share restoration tips and rigging diagrams.

The Verdict

The S&S Knockabout 24 is a sophisticated, "small-but-mighty" sailboat that offers a pedigree usually reserved for much larger yachts. It is an ideal choice for the sailor who prioritizes classic aesthetics and balanced handling over interior volume.

Pros

• S&S Pedigree: Exceptional design work ensures the boat sails beautifully and remains a respected classic.
• Build Quality: Generally heavier and more robustly built than modern equivalents.
• Aesthetics: Low-profile lines and traditional proportions make it one of the most attractive 24-footers on the water.

Cons

• Limited Headroom: The low cabin trunk significantly restricts interior movement.
• Age-Related Maintenance: Buyers must be prepared to address 50-year-old fiberglass and rigging issues.
• Niche Market: Due to its specific design focus, parts and original manufacturer support are non-existent.