Searunner 37 Information, Review, Specs

Sailing Performance & Handling

The sailing characteristics of the Searunner 37 are defined by its trimaran configuration, which offers a level of stability and speed that monohulls of the same era could rarely match. With its deep, pivoting centerboard, the boat achieves surprising windward performance for a multihull of its vintage. According to Jim Brown’s design philosophy, detailed in his seminal work The Case for the Cruising Trimaran, the Searunner is intended to be "affordably fast," prioritizing a smooth motion over raw racing speed.

The boat’s Sail Area/Displacement ratio is high enough to allow for light-air performance, yet the cutter rig—featuring a staysail and a yankee—provides a versatile "gearing" system for heavy weather. By dropping the yankee and reefing the main, the 37 remains balanced and manageable in gale conditions. Handling is noted for its lack of "hobby-horsing" due to the buoyancy distribution in the amas (outer hulls). In a blow, the 37 tracks exceptionally well; the centerboard can be partially raised to move the center of lateral resistance aft, preventing the boat from tripping over its own keel in large following seas. Anecdotal evidence from long-term cruisers suggests that while the Searunner 37 does not point as high as a modern performance monohull, its ability to maintain 8–10 knots on a reach with minimal heel makes it a far less fatiguing platform for long passages.

Interior Comfort & Variations

The Searunner 37 features a unique "split-cabin" layout necessitated by the central cockpit. This design creates two distinct living zones: the main saloon and galley are located forward of the cockpit, while a separate "aft cabin" provides a private stateroom or workshop area. This separation is highly valued by cruising couples or those with children, as it offers a level of privacy rarely found in 37-foot vessels. However, moving between the cabins requires traversing the cockpit, which can be a drawback in cold or rainy climates.

The main saloon is remarkably spacious for a trimaran, thanks to the wide beam carried across the "wings" (the structure connecting the main hull to the amas). These wings are often used for storage or as expansive pilot berths. The interior is typically finished in wood, reflecting the boat's amateur-built heritage, though professionally built examples may feature more modern laminates. Headroom is generous in the center of the main hull, often exceeding 6'3". While the 37 is the most popular "mid-size" Searunner, the Searunner 40 sibling offers a significantly larger galley and a "walk-through" option that connects the forward and aft cabins internally—a feature the 37 lacks in favor of structural simplicity and weight savings.

Popular Mentions & Media

The Searunner 37 has a storied history in nautical literature and the "back-to-the-land" (or sea) movement of the 1970s. Jim Brown himself, a legendary figure in the multihull world, has authored several books and produced various media focusing on the Searunner's capabilities. The model gained further notoriety through the voyages of cruising families who documented their journeys in publications like Cruising World and Multihulls Magazine. The Searunner series is also the subject of a dedicated documentary and technical series titled "The Waterhorse," which explores the construction and philosophy behind these vessels.

Known Issues & Buyer’s Checklist

Since the majority of Searunner 37s were amateur-built, the primary concern for any prospective buyer is the quality of the original construction and the integrity of the epoxy-glass skin.

• Rot in the Wings and Decks: The most critical area for inspection is the "wing" structure where the amas attach to the main hull. Any breaches in the fiberglass skin or poorly sealed deck hardware can lead to water intrusion into the plywood core. Soft spots in the deck or "voids" detected by percussion testing are major red flags.
• Centerboard Trunk: The trunk is a high-stress area that is difficult to inspect. Buyers should check for signs of delamination or leaks around the pivot pin. If the board has been hit hard against an underwater obstacle, the trunk's internal structure may be compromised.
• Chainplate Corrosion: Because many Searunners use custom-fabricated stainless steel chainplates bolted through the hull or wings, hidden crevice corrosion is a common "gotcha." These should be pulled and inspected if there is no record of recent replacement.
• Ama Condition: The outer hulls (amas) are often used for storage of heavy items like anchors or fuel, which they weren't strictly designed for. Check the internal framing of the amas for signs of stress cracking or previous repair.

Community & Resources

The Searunner community is one of the most dedicated in the sailing world. Technical support is primarily centered around OutRig Media, which serves as the official repository for Jim Brown's plans and technical updates. While there is no longer a formal "manufacturer" for these boats, the Searunner User Group (often associated with the Seven Seas Cruising Association in spirit) remains a vital source of crowd-sourced wisdom regarding repairs and modifications.

The Verdict

The Searunner 37 remains a premier choice for the budget-conscious sailor who prioritizes sea-kindliness and safety over modern "condo-maran" amenities. It is a true sailor’s boat that rewards those who understand its unique structural needs.

Pros:

• Exceptional Stability: Offers a level, stable platform that significantly reduces seasickness and fatigue.
• Shallow Draft: The pivoting centerboard and kick-up rudder allow for exploration of thin-water anchorages inaccessible to most monohulls.
• Redundant Safety: The multi-hull configuration and split-cabin design provide buoyancy and compartmentalization for blue-water safety.

Cons:

• Maintenance Intensive: Plywood-epoxy construction requires vigilant maintenance to prevent rot.
• Split Cabin Layout: The lack of internal access between the forward and aft cabins can be inconvenient in inclement weather.
• Variable Build Quality: As many were home-built, the quality of systems and finish can vary wildly between individual boats.