Design and Construction
Naval architect Alexander Simonis of Simonis Voogd Yacht Design described the central engineering challenge plainly: creating beautiful open-plan layouts and nearly 360-degree saloon views while maintaining structural stiffness without a weight penalty. The solution was carbon-infused ring frames in the most critical areas, a technique pioneered on larger all-carbon racing catamarans now applied to a production cruiser. The hull itself is vacuum-bagged and infused with isophthalic resin over E-glass with an end-grain balsa core, and the keels are filled with closed-cell poly foam to prevent water ingress — a detail that reflects the offshore realities these boats regularly face.
Robertson & Caine builds explicitly for the charter market, and that design brief produces a boat of unusual toughness. As one SAIL reviewer noted, fifty skippers a year with varying abilities will inevitably put the boat through the wringer — and Leopards are engineered for exactly that. The interior finishes follow the same logic: wood-grained veneer with the pale look of whitewashed oak, wipe-clean and fingerprint-resistant rather than maintenance-hungry varnished teak.
The 50 is offered in two topside configurations. The 50L adds a flybridge lounge atop the cockpit hardtop, reached by stairs from the starboard side deck, while the 50P carries a raised helm with a solid bimini but no lounge. On the L model the boom has been raised to prevent unwary guests from being struck — a telling charter-market detail.
Rig and Sail Handling
The Leopard 50 is a fractional sloop with a mast height of 77 feet above the waterline and an upwind sail area of 1,660 square feet in standard configuration, rising to 1,028 square feet in the mainsail alone with the optional square-top. A sail area-to-displacement ratio above 20 puts the boat firmly in the relatively high performance bracket for its type, which the sailing experience bears out.
In testing by SAIL magazine in 17-plus knots of wind in a lumpy Gulf Stream, the boat handled as light and sensitive as a round-the-buoys racer. Like most cats the 50 is not happy pinched to 45 degrees apparent, dropping to 7 knots in that configuration, but cracked off to around 60 degrees the speed gauge was showing steady 9s and occasional 10s. Cruising World's reviewer confirmed a steady 9 knots on a beam reach in 15 knots of wind, with 10.4 knots in one puff. For downwind passages, the optional short bowsprit carries a Code 0 or asymmetric spinnaker, and the Code 0 alone spans 970 square feet — a meaningful addition.
All control lines lead back to three beefy electric winches close at hand to the wheel, a setup that makes singlehanded or shorthanded operation genuinely practical. The delivery captain who brought hull number one from South Africa to Florida across 52 days reported banging off 17 knots on autopilot for days on end when wind and angle cooperated — a useful data point on ocean capability.
Cockpit, Flybridge, and Deck
The aft cockpit boasts an immense dinette with nine-foot settees that can accommodate a full anchorage gathering, with an aft seatback that flips forward to face the wake. A Kenyon grill is tucked into a console alongside. The forward cockpit — reached through a watertight door from the saloon — was introduced on the Leopard 44 and has become a signature feature, first introduced in 2012 and carried forward through every subsequent model.
The flybridge on the 50L is the defining feature for many buyers. A U-shaped settee wraps around on three sides with stainless backrests, and a fiberglass table with compartments for odds and ends at sea. An oversized sunpad sits forward, adjacent to the helm, with 6 feet 8 inches of headroom under the boom — enough to move freely under sail without ducking. The saloon itself benefits from a skylight that spans nearly the length of the room, and walls of glass on all sides.
The helm position offers excellent visibility forward and to starboard but the house and hardtop block the view to port. This is a known limitation rather than a flaw, and most operators either dock to starboard, add a port-side camera, or station crew accordingly.
Accommodations
The extra two feet of length and seventeen inches of beam over the 48 translate into living space that would embarrass some monohull sailing yachts half again as long. The standard master stateroom aft to starboard includes a dressing area with built-in bureau and desk/vanity, opening to an ensuite head. The berth falls somewhere between king and queen size. The guest staterooms now have walk-arounds on each side of the berths, eliminating the undignified squirming into bed that plagued narrower boats.
The 50 is available in three-, four-, and five-cabin layouts, with an optional sixth cabin and six heads possible in the most charter-optimized configuration. The forward port bow can be fitted with a single berth and head as crew accommodation. The galley runs along the starboard side of the bridgedeck with a Miele four-burner cooktop over a Force 10 oven and multiple Vitrifrigo refrigeration drawers, an arrangement that keeps the cook out of the traffic flow while remaining a step from the saloon.
The interior headroom comes to just over 6 feet 7 inches — generous for a production cruising cat. Cabin openings were widened to their practical limits, achieved through combining exotic materials with new construction techniques rather than conventional bulkheads.
Power and Systems
Standard power is twin Yanmar 57-horsepower diesel saildrives, with 243 gallons of fuel capacity across both hulls. Optional 80-horsepower Yanmars were fitted to the SAIL review boat, reaching nearly 9 knots at 2,500 rpm. Engine access — a chronic complaint on many catamarans — is handled via twin cockpit hatches rather than requiring a berth to be lifted. A Northern Lights 9kW genset is tucked forward in a deck locker with equally accessible service access.
The widely spaced twin engines give spectacular control when turning in a narrow channel, and the ability to work the boat sideways into tight docks is a genuine advantage in marina environments. The optional hydraulic transom platform can carry a tender up to 10 feet in length and doubles as a beach platform when fully lowered.
The Verdict
The Leopard 50 is what happens when a builder with deep charter-market experience takes a successful formula and deliberately improves every dimension. The structural engineering is sophisticated — carbon ring frames where it counts, foam-filled keels, isophthalic resin infusion — and it shows in a boat that crosses oceans on delivery and survives hard charter seasons without falling apart. The flybridge lounge on the L model transforms how people move around and enjoy a boat at anchor and underway. The sail handling is genuinely shorthanded-friendly, and the performance numbers are real. The accommodations are as spacious as this size class gets. The port-side visibility limitation from the helm is real and worth knowing.
Pros
- Carbon ring frames and isophthalic infused construction deliver offshore toughness without excess weight
- SA/D ratio above 20 produces real performance; consistent 9-10 knot beam-reach speeds documented in testing
- Up to six cabins, all ensuite; walk-around berths in every stateroom
- Flybridge lounge option transforms the onboard experience at anchor and underway
- Twin engines widely spaced for superior docking maneuverability
- Helm-adjacent electric winch cluster makes shorthanded sail handling practical
- Engine access via cockpit hatches — no dismantling accommodation to service the engines
Cons
- Port-side helm visibility is compromised by the house and hardtop
- A capsize screening formula of 2.96 is well above the bluewater threshold of 2.0, reflecting the broad beam
- Five- and six-cabin layouts compromise the owner's suite in favor of charter-optimized sleeping capacity
- Comfort ratio of 18.22 falls in the lightweight/coastal bracket — ocean passages in rough conditions will be lively
