The Robertson and Caine Leopard 42 2019 vs Robertson and Caine Leopard 46 2018 comparison sits squarely in the category of decisions where specs alone won't tell the whole story — intended use, storage, and long-term ownership costs all factor in.
Size is the most obvious dividing line here. The Robertson and Caine Leopard 46 2018 measures 46,4 feet overall (2018), giving it roughly 4,7 additional feet of deck space compared to the Robertson and Caine Leopard 42 2019 at 41,7 feet (2019). Weight tells a clearer story for trailering families: the Robertson and Caine Leopard 46 2018 tips the scales at 36 945 lbs — 9 460 lbs less than the Robertson and Caine Leopard 42 2019 at 27 485 lbs. That difference is meaningful if you're working within a half-ton or three-quarter-ton truck's tow rating, especially once you factor in a motor, gear, and fuel.
The power gap is worth calling out. Rated to 250 hp, the Robertson and Caine Leopard 46 2018 has a 205-hp advantage over the Robertson and Caine Leopard 42 2019's 45-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Fuel capacity breaks the other way: the Robertson and Caine Leopard 46 2018 carries 488 gallons versus 158 gallons in the Robertson and Caine Leopard 42 2019. On a lake day that's negligible, but for coastal cruising or long reservoir runs the extra range matters.
For family outings this is probably the sharpest distinction between the two. The Robertson and Caine Leopard 46 2018 is rated for 14 passengers, while the Robertson and Caine Leopard 42 2019 caps at 12. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Robertson and Caine Leopard 46 2018 could be the deciding factor.
Displacement is where these two sailboats genuinely part ways. The Robertson and Caine Leopard 46 2018 displaces 36 945 lbs — a 9 460-lb difference over the Robertson and Caine Leopard 42 2019 at 27 485 lbs. That gap separates two entirely different categories of sailing: the heavier boat is built for offshore passage-making and load-carrying, while the lighter hull rewards performance sailing and easier handling in lighter air.
Draft is a practical consideration that many buyers underestimate until they're already at the marina. The Robertson and Caine Leopard 42 2019 draws 4,7 ft, compared to 3,1 ft for the Robertson and Caine Leopard 46 2018. That 1,6-foot difference affects which anchorages you can access, which haul-out facilities will take you, and how carefully you need to read the tide tables in shallower cruising grounds.
The Robertson and Caine Leopard 42 2019 uses Sloop rigging. For auxiliary power the Robertson and Caine Leopard 46 2018 carries a 250-hp engine against 45 hp on the Robertson and Caine Leopard 42 2019. Motoring range and ability to punch through a foul current or enter a tight marina under power will favour the more powerful installation.
For extended cruising, water capacity matters: the Robertson and Caine Leopard 46 2018 carries 185 gallons versus 174 gallons on the Robertson and Caine Leopard 42 2019 — a significant advantage on longer passages where watermaker or provisioning stops aren't guaranteed.
Bottom line: The Robertson and Caine Leopard 46 2018 is the offshore and bluewater choice — at 36 945 lbs displacement and 46 ft it has the load capacity, range, and seakeeping for extended passages. The Robertson and Caine Leopard 42 2019 at 27 485 lbs is the more nimble, accessible option — easier to single-hand and better suited to coastal and inland sailing.