| Main features | RM 970 Twin keel |
Model | RM 970 |
Version | Twin keel |
Hull type | Monohull |
Category | Fast cruising sailboat |
Sailboat builder | Fora Marine & RM yachts |
Sailboat designer | |
Sailboat range | |
Country | France |
Construction | Hull and deck: plywood with glass/epoxy stratification |
First built hull | 2016 |
Last built hull | Still in production |
Award(s) |
|
Appendages | Twin keel : twin asymmetric fin with bulb |
Helm | Single tiller (helm wheel in option) |
Rudder | Single spade rudder (twin as option) |
Unsinkable | No |
Trailerable | No |
EC design category iThe CE design category indicates the ability to cope with certain weather conditions (the sailboat is designed for these conditions)A: Wind < force 9, Waves < 10m B: Wind < force 8, Waves < 8m C: Wind < force 6, Waves < 4m D: Wind < force 4, Waves < 0,5m | B |
Standard public price ex. VAT (indicative only) | 158280 2020 |
| Main dimensions | RM 970 Twin keel |
Overall length | 34’ 8”10.57 m |
Hull length | 31’ 8”9.65 m |
Waterline length | 29’ 5”8.95 m |
Beam (width) | 12’ 1”3.7 m |
Draft | 5’ 7”1.72 m |
Mast height from DWL | 52’ 8”16.06 m |
Light displacement (MLC) | 9039 lb4100 kg |
Maximum displacement (MLDC) | 11354 lb5150 kg |
Capacity | 2315 lb1050 kg |
Ballast weight | 2844 lb1290 kg |
| Rig and sails | RM 970 Twin keel |
Upwind sail area | 658 ft²61.1 m² |
Downwind sail area | 1381 ft²128.3 m² |
Mainsail area | 358 ft²33.3 m² |
Genoa area | 299 ft²27.8 m² |
Staysail area | 169 ft²15.7 m² |
Asymmetric spinnaker area | 1023 ft²95 m² |
Rigging type | Cat boat Marconi 9/10 |
Mast configuration | Deck stepped mast |
Rotating spars | No |
Number of levels of spreaders | 2 |
Spreaders angle | Swept-back |
Spars construction | Aluminum spars (carbon fiber spars as an option) |
Standing rigging | 1x19 strand wire discontinuous |
| Performances | RM 970 Twin keel |
Upwind sail area to displacement iThe 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 25 it indicates a fast sailboat. | 257 ft²/T23.85 m²/T |
Downwind sail area to displacement iThe 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. | 539 ft²/T50.08 m²/T |
Displacement-length ratio (DLR) iThe Displacement Length Ratio (DLR) is a figure that points out the boat's weight compared to its waterline length. The 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. | 162 |
Ballast ratio iThe Ballast ratio is an indicator of stability; it is obtained by dividing the boat's displacement by the mass of the ballast. Since the stability depends also of the hull shapes and the position of the center of gravity, only the boats with similar ballast arrangements and hull shapes should be compared.The higher the ballast ratio is, the greater is the stability. | 31 % |
Critical hull speed iAs 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. | 7.26 knots |
| Auxiliary engine | RM 970 Twin keel |
Engine(s) | 1 inboard engine |
Engine(s) power | 20 HP |
Fuel type | Diesel |
Fuel tank capacity | 17.2 gal65 liters |
| Accommodations and layout | RM 970 Twin keel |
Cockpit | Open aft cockpit |
Cabin(s) | 2 |
Berth(s) (min./max.) | 4 / 6 |
Head(s) | 1 |
Freshwater tank capacity | 37 gal140 liters |
Holding tank capacity | 9.2 gal35 liters |