Konsort Duo 29

Sailboat specifications

The Konsort Duo 29 is a 28’11” (8.8m) motorsailer designed by John Laurent Giles (United Kingdom). She was built between 1985 and 1988 by Westerly (United Kingdom) with 108 hulls completed.

Konsort Duo 29's main features

Model: Konsort Duo 29
Hull type: Monohull
Category: Motorsailer
Sailboat builder: Westerly
Sailboat designer: John Laurent Giles
Country: United Kingdom
Construction: Hull and deck: GRP (glass reinforced polyester)
Number of hulls built: 108
First built hull: 1985
Last built hull: 1988
Appendages: Twin keel : fin without bulb
Helm: Single tiller
Rudder: Single transom hung rudder
Unsinkable: No
Trailerable: No
Standard public price ex. VAT (indicative only): N/A €

Konsort Duo 29's main dimensions

Hull length: 28’ 11”8.8 m
Waterline length: 25’ 7”7.81 m
Beam (width): 10’ 10”3.29 m
Draft: 3’ 4”1.01 m
Mast height from D_WL: 35’ 8”10.89 m
Light displacement (M_LC): 10097 lb4580 kg
Ballast weight: 3197 lb1450 kg
Ballast type: Cast iron

Konsort Duo 29's rig and sails

Upwind sail area: 516 ft²47.94 m²
Downwind sail area: 917 ft²85.17 m²
Mainsail area: 177 ft²16.4 m²
Genoa area: 339 ft²31.54 m²
Solent area: 249 ft²23.09 m²
Jib area: 167 ft²15.52 m²
Stormjib area: 67 ft²6.25 m²
Symmetric spinnaker area: 740 ft²68.77 m²
Rigging type: Sloop Marconi masthead
Mast configuration: Deck stepped mast
Rotating spars: No
Number of levels of spreaders: 1
Spreaders angle: 0 °
Spars construction: Aluminum spars
Standing rigging: 1x19 strand wire continuous

Konsort Duo 29'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.: 187 ft²/T17.38 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.: 332 ft²/T30.88 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.: 272
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.: 32 %
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