The RM Yachts RM 1180 Twin keel Twin keel 2015 vs RM Yachts RM 1370 Swing keel Swing keel 2017 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 RM Yachts RM 1370 Swing keel Swing keel 2017 measures 48,5 feet overall (2017), giving it roughly 6,4 additional feet of deck space compared to the RM Yachts RM 1180 Twin keel Twin keel 2015 at 42,1 feet (2015). Weight tells a clearer story for trailering families: the RM Yachts RM 1370 Swing keel Swing keel 2017 tips the scales at 29 183 lbs — 13 751 lbs less than the RM Yachts RM 1180 Twin keel Twin keel 2015 at 15 432 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 RM Yachts RM 1180 Twin keel Twin keel 2015 carries a rated maximum of 50 hp. Engine data for the RM Yachts RM 1370 Swing keel Swing keel 2017 wasn't available in our records — check the manufacturer's spec sheet before sizing a motor.Fuel capacity breaks the other way: the RM Yachts RM 1370 Swing keel Swing keel 2017 carries 93 gallons versus 28 gallons in the RM Yachts RM 1180 Twin keel Twin keel 2015. 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 RM Yachts RM 1370 Swing keel Swing keel 2017 is rated for 14 passengers, while the RM Yachts RM 1180 Twin keel Twin keel 2015 caps at 12. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the RM Yachts RM 1370 Swing keel Swing keel 2017 could be the deciding factor.

Displacement is where these two sailboats genuinely part ways. The RM Yachts RM 1370 Swing keel Swing keel 2017 displaces 29 183 lbs — a 13 751-lb difference over the RM Yachts RM 1180 Twin keel Twin keel 2015 at 15 432 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.

Both boats draw a similar depth — 6,5 ft and 6,5 ft respectively. Marina access and anchorage options should be broadly equivalent between the two.

The RM Yachts RM 1180 Twin keel Twin keel 2015 is rigged as a Sloop while the RM Yachts RM 1370 Swing keel Swing keel 2017 carries cutter rigging — a meaningful difference in sail handling complexity, upwind performance, and the size of crew you'll need to work the boat comfortably. The RM Yachts RM 1180 Twin keel Twin keel 2015 has a documented auxiliary engine of 50 hp.

For extended cruising, water capacity matters: the RM Yachts RM 1370 Swing keel Swing keel 2017 carries 159 gallons versus 79 gallons on the RM Yachts RM 1180 Twin keel Twin keel 2015 — a significant advantage on longer passages where watermaker or provisioning stops aren't guaranteed.