RM 800

Sailboat specifications

The RM 800 is a 26’2” (7.99m) fast cruising sailboat designed by Marc Lombard Yacht Design Group (France). She was built between 1992 and 2003 by Fora Marine (France) with 24 hulls completed.

RM 800's main features

Model: RM 800
Hull type: Monohull
Category: Fast cruising sailboat
Sailboat builder: Fora Marine
Sailboat designer: Marc Lombard Yacht Design Group
Sailboat range: RM
Country: France
Construction: Hull and deck: plywood with glass/epoxy stratification
Number of hulls built: 24
First built hull: 1992
Last built hull: 2003
Appendages: Twin keel : twin asymmetric fin with bulb
Helm: Single tiller
Rudder: Single rudder on skeg
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: C
Standard public price ex. VAT (indicative only): N/A €

RM 800's main dimensions

Overall length: 26’ 5”8.05 m
Hull length: 26’ 2”7.99 m
Waterline length: 25’ 7”7.8 m
Beam (width): 11’ 2”3.4 m
Waterline beam (width): 8’ 8”2.64 m
Draft: 3’ 11”1.19 m
Mast height from D_WL: 40’ 8”12.4 m
Light displacement (M_LC): 3968 lb1800 kg
Maximum displacement (M_LDC): 5445 lb2470 kg
Ballast weight: 2105 lb955 kg
Ballast type: Cast iron
French customs tonnage: 8.40 Tx

RM 800's rig and sails

Upwind sail area: 506 ft²47 m²
Downwind sail area: 899 ft²83.5 m²
Mainsail area: 307 ft²28.5 m²
Genoa area: 199 ft²18.5 m²
Jib area: 151 ft²14 m²
Asymmetric spinnaker area: 592 ft²55 m²
Rigging type: Cutter Marconi fractional
Mast configuration: Deck stepped mast
Rotating spars: No
Number of levels of spreaders: 1
Spreaders angle: Swept-back (Bergström)
Spars construction: Aluminum spars
Standing rigging: 1x19 strand wire continuous

RM 800's performances

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.: 342 ft²/T31.76 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.: 607 ft²/T56.43 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.: 107
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.: 53 %
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.: 6.78 knots