Island Sharpie 23 Information, Review, Specs

Sailing Performance & Handling

The sailing characteristics of the NIS 23 are defined by Bruce Kirby’s "big dinghy" philosophy. Because the masts are unstayed and made of carbon fiber or extruded aluminum, they are flexible, allowing the tops of the sails to twist off and automatically depower in heavy gusts. This makes the boat remarkably forgiving for solo sailors. According to technical insights from WoodenBoat Magazine, the sharpie hull is deceptively fast, particularly on a reach where the flat bottom encourages a high degree of "plane-like" efficiency despite being a displacement hull.

The cat-ketch rig, which places the mainmast at the bow and the mizzenmast further aft, allows for a balanced helm across a wide range of wind conditions. Owners often report that the boat can be steered with just two fingers on the tiller. However, because it lacks a deep keel, the NIS 23 relies on its weighted centerboard for lateral resistance; if the board is not fully deployed, the boat will experience significant leeway when sailing upwind. The absence of a headsail simplifies maneuvers, as there are no jib sheets to winch during a tack—the sailor simply moves the tiller, and the boat pivots.

Interior Comfort & Variations

For a 23-foot vessel with a flat bottom, the NIS 23 offers a surprisingly functional interior, though it is strictly a "pocket cruiser" rather than a standing-headroom yacht. The cabin layout typically includes a V-berth forward and two narrow settee berths running aft, providing sleeping accommodations for up to four people in a "camping-style" environment. Because the boat is often home-built from kits or plans, the level of finish and specific layout can vary. Some versions feature a small galley slide-out or a dedicated space for a porta-potti tucked under the companionway.

The NIS 23 belongs to a broader family of Bruce Kirby sharpies, including the smaller NIS 18 and the larger NIS 26, 29, and 31 models. While the NIS 18 is more of a day-sailer, the 23 is considered the "sweet spot" of the range, offering enough displacement to handle coastal hops and overnighting without losing the ease of trailering that defines the series. A rare variation of the 23 includes a "schooner" rig, though the cat-ketch remains the standard for its superior balance.

Popular Mentions & Media

The Norwalk Island Sharpie 23 has earned a cult following among "thin water" enthusiasts and advocates of the wooden boat renaissance. It is a frequent subject of discussion in the Small Reach Regatta circles and has been featured in several design retrospectives highlighting Bruce Kirby's versatility. The boat’s ability to navigate the Florida Keys or the Chesapeake Bay shallows has made it a favorite for "raid" style racing, where speed and shallow draft are equally weighted.

Known Issues & Buyer’s Checklist

When inspecting a pre-owned NIS 23, the focus must be on the integrity of the wood-epoxy composite, as most were built by amateur or semi-professional craftsmen.

• Centerboard Trunk: The most common "gotcha" is rot or delamination inside the centerboard trunk. Because this area is difficult to paint and constantly exposed to water, any failure in the fiberglass cloth or epoxy coating can lead to structural soft spots.
• Mast Steps: Since the masts are unstayed, the leverage exerted on the mast steps and the partners (where the mast passes through the deck) is immense. Check for stress cracks in the deck or any signs of movement in the step mounts.
• Bottom Wear: Because these boats are designed to be "beached," the bottom of the hull often sees significant abrasion. Look for "beach rash" that has worn through the epoxy and exposed the plywood core.
• Tabernacle Hinges: Many NIS 23s use a tabernacle system to fold the masts. Ensure the pins and hinges are not bent and that the surrounding wood hasn't suffered from compression or moisture ingress.

Community & Resources

The primary hub for technical data and builder support is the Norwalk Island Sharpie official design site, which continues to provide plans and support for the Kirby designs. Additionally, the WoodenBoat Forum maintains a dedicated following of builders who share modifications for the NIS 23, such as adding water ballast or custom cabinetry.

The Verdict

The Norwalk Island Sharpie 23 is an ideal vessel for the sailor who values simplicity, shallow-water access, and the aesthetic of a modern classic.

Pros:

• Extreme Shallow Draft: Can navigate in less than 12 inches of water with the board up.
• Easy Handling: The unstayed cat-ketch rig is one of the easiest sail plans to manage solo.
• Trailability: Light enough to be towed by a standard SUV, expanding cruising grounds significantly.

Cons:

• Limited Headroom: The low profile of the sharpie hull means most adults cannot stand upright in the cabin.
• Upwind Performance: While fast on a reach, it cannot point as high as a modern fin-keel sloop.
• Maintenance: Wood-epoxy construction requires diligent inspection to prevent rot, especially in the centerboard and rudder assemblies.