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Sailboat specifications and datasheets

RM 1270 twin keel

The RM 1270, here in "twin keel" version, is a 39’10” monohull sailboat designed by Marc Lombard. She was built by Fora Marine (France) and made of plywood with fiberglass / epoxy with galvanised steel frame. The production started in 2015 .

The RM 1270 belongs to the RM range. The RM 1270 is as well listed, on Boat-Specs.com, in version Fin keel and Swing keel.

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RM 1270's   Main Features
Model RM 1270
Version Twin keel
Type of hull Monohull
Category Offshore fast cruising sailboat
Shipyard
Designer Marc Lombard
Range RM
Construction Hull:
Plywood with fiberglass / epoxy with galvanised steel frame
Deck:
sandwich PVC / fiberglass / polyester
First built hull 2015
Last built hull Still in production
Appendages Twin keel :
Twin asymetric fin with bulb
Helm 2 wheels
Rudder 1 spade rudder (Double as option)
Cockpit Open aft cockpit
Unsinkable No
Trailerable No
EC certification A
Standard public price ex. VAT (indicative only) About
212 000
(2017)
RM 1270's   Main dimensions
Length overall 43’ 2”
Hull length 39’ 10”
Waterline length 39’ 1”
Beam (width) 14’ 4”
Draft 6’ 5”
Mast height from DWL 63’ 4”
Light displacement 16314 lbs
Maximum displacement 22046 lbs
Capacity 5732 lbs
Ballast weight 5291 lbs
RM 1270's   Rig and sails
Upwind sail area 1066 sq.ft
Downwind sail area 2088 sq.ft
Mainsail area 527 sq.ft
Genoa area 538 sq.ft
Asymetric spinnaker area 1561 sq.ft
Rigging type Cutter Marconi 9/10
Rotating spars No
Mast position Deck stepped mast
Spars Mast and boom in Aluminum (carbon fiber as an option)
Standing rigging 1x19 strand wire discontinuous
Number of levels of spreaders 2
Spreaders angle Swept-back
IiFore triangle height (from mast foot to fore stay attachment) 54’ 7”
JiFore triangle base (from mast foot to bottom of forestay) 17’ 5”
PiMainsail hoist measurement (from tack to head) 52’ 11”
EiMainsail foot measurement (from tack to clew) 16’ 8”
RM 1270's   Performances
Upwind sail area to displacementiThe ratio sail area to displacement is obtained by dividing the sail area by the boat's displaced volume to the power two-thirds.
The ratio sail area to displacement can be used to compare the relative sail plan of different sailboats no matter what their size. Upwind : under 18 the ratio indicates a cruise oriented sailboat with limited performances especially in light wind, while over 23 it indicates a fast sailboat.
26.07
Downwind sail area to displacementiThe ratio sail area to displacement is obtained by dividing the sail area by the boat's displaced volume to the power two-thirds.
The ratio sail area to displacement can be used to compare the relative sail plan of different sailboats no matter what their size. Upwind : under 18 the ratio indicates a cruise oriented sailboat with limited performances especially in light wind, while over 23 it indicates a fast sailboat.
51.09
Displacement-Length ratio (DLR)iThe Displacement Length ratio is a figure that points out the boat's weight compared to its waterline length. DLR is obtained by dividing the boat's displacement in tons by the cube of one one-hundredth of the waterline length (in feet).
The DLR can be used to compare the relative mass of different sailboats no matter what their length: a DLR less than 180 is indicative of a really light sailboat (race boat made for planning), while a DLR greater than 300 is indicative of a heavy cruising sailboat.
124
Ballast ratioiThe Ballast ratio is an indicator of the stability; it is obtained by dividing the boat's displacement by the weight of the ballast. Since the stability depends also of the hull shape and the position of the center of gravity, only boats with similar ballast arrangements and hull shape should be considered.
Higher the ballast ratio is, greater is the stability.
32 %
Hull speediAs a ship moves in the water, it creates standing waves that oppose its movement. This effect increases dramatically the resistance when the boat reaches a speed-length ratio (speed-length ratio is the ratio between the speed in knots and the square root of the waterline length in feet) of about 1.2 (corresponding to a Froude Number of 0.35) . This very sharp rise in resistance, between speed-length ratio of 1.2 to 1.5, is insurmountable for heavy sailboats and so becomes an apparent barrier. This leads to the concept of "hull speed".
The hull speed is obtained by multiplying the square root of the waterline length (in feet) by 1.34.
8.38 knots
RM 1270's   Auxiliary engine
Engine(s) 1
Engine type Inboard engine
Engine (min/max) 40 HP / 55 HP
Fuel type Diesel
Fuel tank capacity 39.6 gal
RM 1270's   Accommodation
Cabin(s) (min/max) 2 / 3
Berth(s) (min/max) 4 / 8
Head(s) 1
Fresh water tank capacity 126.8 gal
Holding tank capacity 14.5 gal
Maximum headroom 6’ 5”
Galley headroom 6’ 5”
Head headroom 6’ 5”
RM 1270's   Saloon
Maximum headroom 6’ 2”
Saloon table length 4’ 7”
Saloon table width (min/max) 1’ 6” / 4’ 5”
Berth length 7’
Berth width 2’ 4”
RM 1270's   Fore cabin
Maximum headroom 5’ 10”
Berth length 6’ 7”
Berth width 4’ 1”
RM 1270's   Aft cabin
Maximum headroom 6’ 5”
Berth length 6’ 7”
Berth width 5’ 2”

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