Design Brief & Intent
The core philosophy of the Victory 35 centers on blue-water security and long-term livability in a pocket-sized catamaran. Unlike many European designs of the era that featured wide beams and netting trampolines up front, the Victory 35 utilizes a solid fiberglass bridgedeck carried well forward. This hard foredeck adds tremendous structural stiffness to the entire platform, eliminating the torsional twisting common in early catamaran designs while providing a secure, stable working platform for ground tackle management and sail handling.
The interior of the Victory 35 demonstrates a commitment to traditional craftsmanship and functional comfort. Built with hand-crafted teak joinery and louvered doors, the cabins achieve excellent ventilation and a classic aesthetic rarely found in modern production multihulls. Featuring an impressive headroom of 6 feet, 4 inches, the layout offers a bright, panoramic 180-degree saloon and a "galley-up" arrangement that places the cook on the same level as the social areas. This contrasts sharply with competing pocket catamarans of the time, such as the Gemini 105, which opted for narrow, "galley-down" configurations in the starboard hull.
The hulls themselves feature a stepped design with fine entry bows, shifting to flared upper sections that expand interior living space while cushioning the boat's motion in a seaway. Under the water, Hepburn integrated asymmetric hulls to reduce the "venturi effect" (the funneling of waves between the hulls), which actively mitigates bridge deck slamming—a notorious source of noise and structural fatigue on compact catamarans.
Sailing Performance & Handling
Under sail, the Victory 35 defies the lazy-cruiser stereotype often associated with small, solid-foredeck multihulls. With a displacement of 9,500 pounds and a generous sail-area-to-displacement (SA/Disp) ratio of 22.11, she carries a powerful sail plan relative to her weight. This enables lively light-wind performance, allowing the boat to move at roughly half the wind speed in conditions under 15 knots. The low displacement-to-length (Disp/LWL) ratio of 101.77 underscores her easily driven, lightweight hull form, which is built using vacuum-bagged vinylester resins and a biaxial fiberglass laminate over a foam and Nida-Core composite.
At the helm, the Victory 35 feels steady and predictable, exhibiting a low-motion profile indicated by her comfort ratio of 10.52 and a capsize screening formula of 3.02. She heels very little—typically capping at about 5 degrees in a stiff breeze—which reduces crew fatigue during long offshore legs. While the solid foredeck provides excellent dry decks, it can lead to hobby-horsing when driving directly into steep, short-period head seas, as the buoyancy forward reacts rapidly to passing waves. However, downwind and on a reach, the boat is remarkably balanced, with twin rudders offering precise control and preventing the vessel from rounding up in heavy gusts.
Propulsion & Mechanical Systems
One of the most defining and polarizing features of the Victory 35 is its singular propulsion system. Unlike contemporary catamarans that utilize two independent diesels, the Victory 35 is powered by a single Yanmar engine mounted amidships directly under the cockpit sole. Standard installations feature either a 27-horsepower, 38-horsepower, or 40-horsepower Yanmar diesel. This centralized weight distribution improves sea-kindly behavior by keeping heavy machinery out of the sterns, reducing pitching.
This lone engine drives a steerable, retractable Sillette-Sonic Catamaran Drive (Mk2) outdrive leg. Under power, the outdrive leg pivots in tandem with the twin rudders, providing an incredibly tight turning radius that allows the boat to spin almost on its own length. The steerable leg is also highly efficient, keeping fuel consumption under half a gallon per hour at a cruising speed of 6 knots. Furthermore, the entire outdrive leg can be raised out of the water while under sail via a manual or hydraulic lift. This eliminates propeller drag entirely—boosting sailing speed—and protects the drive unit from marine growth and galvanic corrosion while at anchor.
Known Issues & Triage
The proprietary nature of the Sillette-Sonic outdrive system represents the primary maintenance focal point for owners. Because the leg relies on physical pivot pins, gears, and a mechanical reverse-lock mechanism, it is susceptible to wear. A common failure point is the reverse-lock latch. Over time, the latch tooth or the cable linkage can shear or stretch, causing the outdrive leg to kick upward when the transmission is shifted into reverse. This results in a sudden loss of reverse thrust and potential damage to the lifting tackle. Regular inspection of the latch, manual locking pins, and the release cable is a mandatory triage routine.
The outdrive unit also requires meticulous seasonal maintenance. If the input seals or drive leg bellows leak, seawater can contaminate the gear oil, leading to rapid gear failure. Disassembling the leg to grease the yoke pins and replace the oil seals is a standard haul-out procedure. Fortunately, Sillette-Sonic in the United Kingdom still supports these drives, and replacement parts remain accessible.
Structurally, the vacuum-bagged Nida-Core and foam-cored deck require careful inspection. While the core material is highly rot-resistant compared to traditional balsa, improperly bedded aftermarket deck hardware can still allow water to migrate into the laminate, causing localized delamination or compression of the core. Particular attention should be paid to the areas surrounding the stanchion bases, the hard foredeck joins, and the windlass mount.
Modernization & Upgrades
Given that the youngest Victory 35s are over two decades old, veteran owners heavily target the electrical systems for modern cruising. The single-engine configuration means that alternator charging is halved compared to dual-engine catamarans, making high-yield solar arrays a necessary upgrade. Owners frequently install custom aluminum arches over the aft cockpit to support 600 to 800 watts of rigid solar panels, feeding into MPPT charge controllers.
These solar setups are almost universally paired with lithium-iron-phosphate (LiFePO4) house battery banks. Upgrading to lithium is especially advantageous on the Victory 35, as it dramatically reduces overall weight—preserving the boat’s light 9,500-pound displacement—while providing the capacity to run high-draw appliances like watermakers and even small reverse-cycle air conditioning units overnight without running a generator.
In the engine compartment, some owners have upgraded the original mechanical Yanmar engines to the 40-horsepower Yanmar 3JH series, pairing them with modern Aquadrive thrust bearings to reduce vibration and shaft wear on the Sonic drive connection.
The Verdict
The Victory 35 is a rare, clever, and highly practical cruiser that punches far above its weight class. By prioritizing structural rigidity, centralized weight, and a layout optimized for real-world liveaboard comfort, Bill Hepburn created a pocket catamaran capable of safe coastal hopping and Bahamas transit. The single-engine steerable outdrive represents a clever engineering trade-off: it reduces drag, lowers engine maintenance costs, and delivers exceptional docking maneuverability, but demands strict vigilance and mechanical upkeep. For the buyer who values safety, interior craftsmanship, and sailing performance over maximum charter cabin counts, this limited-production American multihull remains a highly valued find on the brokerage market.
Pros
- Exceptional interior volume, headroom, and panoramic visibility for a 35-foot boat.
- Solid foredeck and vacuum-bagged composite construction provide superb structural stiffness and dry decks.
- Extremely low drag under sail when the Sonic outdrive leg is retracted.
- High-quality interior wood joinery and a functional "galley-up" layout.
- Superior maneuverability in close quarters due to the steerable outdrive leg and dual rudders.
Cons
- Single-engine configuration lacks the mechanical redundancy of dual-engine catamarans.
- The Sillette-Sonic outdrive requires diligent maintenance of seals, pivot pins, and reverse locks.
- Solid foredeck can cause hobby-horsing when driving directly into steep, short-period head seas.
- Extremely limited production run makes finding vessels and model-specific owner advice difficult.
