RM Yachts RM 1070 Twin keel Twin keel 2015 boat specs
RM Yachts
RM Yachts RM 1070 Twin keel Twin keel 2015
2015
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RM Yachts RM 1370 Swing keel Swing keel 2017 boat specs
RM Yachts
RM Yachts RM 1370 Swing keel Swing keel 2017
2017
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RM Yachts RM 1070 Twin keel Twin keel 2015 vs RM Yachts RM 1370 Swing keel Swing keel 2017 — Same Brand, Different Boat

The RM Yachts RM 1070 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 10,8 additional feet of deck space compared to the RM Yachts RM 1070 Twin keel Twin keel 2015 at 37,7 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 — 13 310 lbs less than the RM Yachts RM 1070 Twin keel Twin keel 2015 at 15 873 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.

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 1070 Twin keel Twin keel 2015 caps at 11. 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 13 310-lb difference over the RM Yachts RM 1070 Twin keel Twin keel 2015 at 15 873 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 — 5,7 ft and 6,5 ft respectively. Marina access and anchorage options should be broadly equivalent between the two.

The RM Yachts RM 1070 Twin keel Twin keel 2015 uses cutter rigging.

Hull speed is rated at 8,8 knots for the RM Yachts RM 1370 Swing keel Swing keel 2017 and 7,9 knots for the RM Yachts RM 1070 Twin keel Twin keel 2015. For extended cruising, water capacity matters: the RM Yachts RM 1370 Swing keel Swing keel 2017 carries 159 gallons versus 53 gallons on the RM Yachts RM 1070 Twin keel Twin keel 2015 — a significant advantage on longer passages where watermaker or provisioning stops aren't guaranteed.

Bottom line: The RM Yachts RM 1370 Swing keel Swing keel 2017 is the offshore and bluewater choice — at 29 183 lbs displacement and 49 ft it has the load capacity, range, and seakeeping for extended passages. The RM Yachts RM 1070 Twin keel Twin keel 2015 at 15 873 lbs is the more nimble, accessible option — easier to single-hand and better suited to coastal and inland sailing.
Measurements / Dimensions
Length overall - Detail37.70 ft
Length overall - Detail48.50 ft
Length - Feet37.7
Length - Feet48.5
Length overall - Meters11.49
Length overall - Meters14.78
Length overall - Inches452
Length overall - Inches582
Beam13.10 ft
Beam14.10 ft
Beam - Meters3.99
Beam - Meters4.3
Beam - Inches157
Beam - Inches169
Draft [max] - Detail5.70 ft
Draft [max] - Detail6.50 ft
Draft [max] - Meters1.74
Draft [max] - Meters1.98
Draft [max] - Inches68
Draft [max] - Inches78
Displacement15873.00 lbs
Displacement29183.00 lbs
Body / Hull
Rudder1 spade rudder
Rudder1 spade rudder (Double as option)
Helm2 wheels
Helm2 wheels
Engine and Drivetrain
Fuel tank capacity - Gal21.1
Fuel tank capacity - Gal92.5
Fuel tank capacity - Liters79.87
Fuel tank capacity - Liters350.15
Engine 2 Horsepower40 hp
Engine 2 Horsepower75 hp
Engine 2 Drive Typeinboard
Engine 2 Drive Typeinboard
Performance
Maximum speed7.86
Maximum speed8.75
Maximum speed measureknots
Maximum speed measureknots
Operational Info
Water capacity52.8
Water capacity158.5
Holding tank capacity - Gal9.2
Holding tank capacity - Gal29.1
Holding tank capacity - Liters34.83
Holding tank capacity - Liters110.16
Riggingcutter
Riggingcutter
Mast ConfigurationDeck stepped mast
Mast ConfigurationDeck stepped mast
Boat typeSail
Boat typeSail

RM Yachts RM 1070 Twin keel Twin keel 2015 vs RM Yachts RM 1370 Swing keel Swing keel 2017 — Common Questions

Which is the larger boat — the RM Yachts RM 1070 Twin keel Twin keel 2015 or the RM Yachts RM 1370 Swing keel Swing keel 2017?
The RM Yachts RM 1370 Swing keel Swing keel 2017 is the longer of the two at 48,5 feet overall. The RM Yachts RM 1070 Twin keel Twin keel 2015 comes in at 37,7 feet, making it roughly 10,8 ft shorter — a meaningful difference in deck room and overall on-water presence.
Which is easier to trailer — the RM Yachts RM 1070 Twin keel Twin keel 2015 or the RM Yachts RM 1370 Swing keel Swing keel 2017?
For trailering, the RM Yachts RM 1070 Twin keel Twin keel 2015 has the edge at 15 873 lbs dry weight versus 29 183 lbs for the RM Yachts RM 1370 Swing keel Swing keel 2017. Add a motor (typically 300–500 lbs for an outboard in this class), gear, and a partial fuel load and the difference grows. Lighter is friendlier on smaller tow vehicles and on fuel economy while hauling.
How many people can each boat hold?
The RM Yachts RM 1070 Twin keel Twin keel 2015 is Coast Guard rated for 11 passengers, while the RM Yachts RM 1370 Swing keel Swing keel 2017 is certified for 14. Note that legal capacity and comfortable capacity aren't always the same thing — on a full day out, most experienced boaters aim for about 80% of the rated number to keep things comfortable.
Which boat has the deeper draft — the RM Yachts RM 1070 Twin keel Twin keel 2015 or the RM Yachts RM 1370 Swing keel Swing keel 2017?
The RM Yachts RM 1370 Swing keel Swing keel 2017 has the deeper draft at 6,5 ft, versus 5,7 ft for the RM Yachts RM 1070 Twin keel Twin keel 2015. A deeper draft generally means better upwind performance and stability, but limits access to shallow anchorages and some marina berths. Always check the controlling depth of your home port and favourite cruising grounds before committing.
Is the RM Yachts RM 1070 Twin keel Twin keel 2015 or the RM Yachts RM 1370 Swing keel Swing keel 2017 better suited for offshore sailing?
For offshore work, displacement and construction are the primary indicators. The RM Yachts RM 1370 Swing keel Swing keel 2017 at 29 183 lbs displacement is the heavier, more load-carrying design — generally better suited to extended passages where seakeeping and provisioning capacity matter most. The RM Yachts RM 1070 Twin keel Twin keel 2015 at 15 873 lbs will typically be livelier and more responsive in lighter conditions.
Which is the faster sailboat — the RM Yachts RM 1070 Twin keel Twin keel 2015 or the RM Yachts RM 1370 Swing keel Swing keel 2017?
Based on rated hull speed, the RM Yachts RM 1370 Swing keel Swing keel 2017 has an edge at 8,8 knots versus 7,9 knots for the RM Yachts RM 1070 Twin keel Twin keel 2015. Keep in mind that actual sailing speed depends heavily on wind conditions, sail trim, bottom condition, and skipper experience — hull speed is a theoretical maximum, not a guarantee.
Which boat is better equipped for long-distance cruising?
For extended passages, fresh water capacity is a key indicator of cruising readiness. The RM Yachts RM 1370 Swing keel Swing keel 2017 carries 159 gallons of fresh water compared to 53 gallons on the RM Yachts RM 1070 Twin keel Twin keel 2015 — a meaningful advantage when watermaker installations or port stops aren't guaranteed.
Which boat is wider, and does it affect trailering?
The RM Yachts RM 1370 Swing keel Swing keel 2017 measures 169" wide, compared to 157" for the RM Yachts RM 1070 Twin keel Twin keel 2015. The US standard-width towing limit is 8’6" (102") in most states — anything over that may need a wide-load permit. Confirm your specific route requirements with each state's DOT.
Which boat has the larger fuel tank — the RM Yachts RM 1070 Twin keel Twin keel 2015 or the RM Yachts RM 1370 Swing keel Swing keel 2017?
The RM Yachts RM 1370 Swing keel Swing keel 2017 has the bigger tank at 93 gallons, versus 21 gallons on the RM Yachts RM 1070 Twin keel Twin keel 2015. That 71-gallon difference translates to roughly 214–357 nautical miles of additional range at cruising speed, depending on motor, load, and conditions.
Are the RM Yachts RM 1070 Twin keel Twin keel 2015 and RM Yachts RM 1370 Swing keel Swing keel 2017 from the same manufacturer?
Yes — both the RM Yachts RM 1070 Twin keel Twin keel 2015 and the RM Yachts RM 1370 Swing keel Swing keel 2017 are built by RM Yachts. That means shared dealer networks, common parts availability, and consistent build quality across the line. The choice between them is essentially a question of how much boat you need, not which brand you trust.