San Juan 21-2 Information, Review, Specs

History and Design

The San Juan 21-2 emerged from a legacy of innovation at the Clark Boat Company, a Washington-based builder renowned for its "well-built, easily sailable, and value-driven vessels". The original San Juan 21, designed by Don Clark and introduced in 1969, was an instant success, with nearly 1,000 units built before the Mark II's introduction. In 1974, Clark Boat Company launched the San Juan 21-2, also known as the Mark II, as a direct evolution of its predecessor.

The primary design goal for the Mark II was to improve interior space and comfort. Don Clark achieved this by implementing a "raised deck version of the MARK I with the companionway moved aft," which allowed for a more expansive cabin layout. While the hull form remained largely unchanged from the Mark I, this deck redesign significantly enhanced the boat's cruising potential. Clark Boat Company, known for its "gelcoat applied to a hull mold, followed by a hand-laid fiberglass construction," ensured that the San Juan 21-2, like all its models, was robust and durable. The Mark I and Mark II were produced concurrently for a period, with the last Mark I built in 1977. Overall, more than 2,600 San Juan 21s (all models) were produced through the late 1980s, solidifying its place as an iconic trailerable sailboat.

Sailing Performance and Handling

With a length overall of 20.5 feet and a waterline of 17.0 feet, the San Juan 21-2 offers a lively and responsive sailing experience. Its fractional sloop rig, with a total sail area of approximately 193 square feet, contributes to its nimble feel on the water. A key feature enhancing its versatility is the swing keel, which allows for a minimum draft of 0.7 feet for easy launching and retrieval from a trailer, expanding to a maximum draft of 4.0 feet for improved upwind performance. This "performance fin keel that retracts fully into the hull" is a significant factor in the boat's capabilities. The San Juan 21-2 also features a kick-up rudder, further simplifying shallow water operations and beaching.

Owners often describe the San Juan 21-2 as a boat that "sails well and is very responsive." While it can be "quite tender" for those not accustomed to lighter displacement boats, it offers a "sporty" feel. The boat's design promotes quick acceleration and a balanced helm, making it enjoyable for day sailing and casual racing. Its light displacement of 1250 pounds allows it to perform respectably in lighter winds, while proper reefing is recommended in heavier conditions, as it is "absolutely not a heavy weather boat." The hull speed is calculated at 5.52 knots, offering a good turn of speed for a boat of its size.

Accommodations and Layout

Despite its compact dimensions, the San Juan 21-2 strives to provide functional accommodations for overnight trips and comfortable day sailing. The Mark II's raised deck and aft-moved companionway were specifically designed to create "more interior space" compared to the Mark I. The cabin typically features a V-berth forward, which is noted to be larger than in the original Mark I, along with two quarter berths located under the cockpit. While specific headroom figures are not consistently available, owners generally report about "3.5 feet of headroom," making it a sit-down cabin rather than a stand-up space for most adults.

The interior layout, though simple, is designed for efficiency. There is usually space for a portable head, and some models may feature a small galley area, often comprising a counter and storage. The fiberglass solid construction of both hull and deck contributes to a relatively low-maintenance interior. Storage is generally found beneath berths. The cabin is considered to comfortably fit "about 3/4 of a person" if lying down, highlighting its minimalist approach to interior volume. However, the emphasis remains on its large and comfortable cockpit for day sailing.

Owner's Perspectives

San Juan 21-2 owners frequently praise the boat for its "solid construction" and its "great value for the family sailor." Many consider it an excellent "starter boat" due to its ease of sailing and straightforward setup. The retractable swing keel and kick-up rudder are consistently highlighted as major advantages, facilitating trailerability and allowing access to shallow waterways, which greatly expands cruising grounds. Its responsiveness and spirited performance are also frequently mentioned as positive attributes, making it an engaging boat to sail.

However, owners also note some common characteristics. The boat is often described as "tender," meaning it heels readily, requiring early reefing in brisk winds. The light displacement, while contributing to its agility, means the "bow pounds hard in any amount of chop." While generally well-built, as is characteristic of Clark Boat Company vessels, some owners might encounter typical issues associated with older fiberglass boats, such as original deck fittings needing re-bedding over time. The active San Juan 21 owner forums are a valued resource for new and experienced owners alike, providing a strong community for support and shared knowledge.