| Main features | Centaur Sloop | Centaur Ketch |
Model | Centaur | Centaur |
Version | Sloop | Ketch |
Hull type | Monohull | Monohull |
Category | Cruising sailboat | Cruising sailboat |
Sailboat builder | Westerly | Westerly |
Sailboat designer | ||
Country | United Kingdom | United Kingdom |
Construction | Hull and deck: GRP (glass reinforced polyester) | Hull and deck: GRP (glass reinforced polyester) |
Number of hulls built | 2444 | 2444 |
First built hull | 1969 | 1969 |
Last built hull | 1980 | 1980 |
Appendages | Twin keel : fin without bulb | Twin keel : fin without bulb |
Helm | Single tiller | Single tiller |
Rudder | Single spade rudder | Single spade rudder |
Unsinkable | No | No |
Trailerable | No | No |
Former French navigation category | 2 | 2 |
| Main dimensions | Centaur Sloop | Centaur Ketch |
Overall length | 27’ 11”8.5 m | |
Hull length | 25’ 11”7.9 m | 25’ 11”7.9 m |
Waterline length | 21’ 8”6.6 m | 21’ 8”6.6 m |
Beam (width) | 8’ 6”2.6 m | 8’ 6”2.6 m |
Draft | 3’0.9 m | 3’0.9 m |
Mast height from DWL | 36’ 8”11.18 m | 32’ 6”9.9 m |
Light displacement (MLC) | 6173 lb2800 kg | 6702 lb3040 kg |
Ballast weight | 2800 lb1270 kg | 2800 lb1270 kg |
Ballast type | Cast iron | Cast iron |
French customs tonnage | 6.65 Tx | 6.65 Tx |
| Rig and sails | Centaur Sloop | Centaur Ketch |
Upwind sail area | 401 ft²37.3 m² | 384 ft²35.65 m² |
Mainsail area | 161 ft²15 m² | 110 ft²10.2 m² |
Mizzen sail area | 37 ft²3.45 m² | |
Genoa area | 240 ft²22.3 m² | 237 ft²22 m² |
Solent area | 182 ft²16.9 m² | 173 ft²16.1 m² |
Jib area | 133 ft²12.4 m² | 110 ft²10.2 m² |
Stormjib area | 45 ft²4.2 m² | 46 ft²4.25 m² |
Rigging type | Sloop Marconi masthead | Sloop Marconi masthead |
Mast configuration | Deck stepped mast | Deck stepped mast |
Rotating spars | No | No |
Number of levels of spreaders | 1 | 1 |
Spreaders angle | 0 ° | 0 ° |
Spars construction | Aluminum spars | Aluminum spars |
Standing rigging | 1x19 strand wire continuous | 1x19 strand wire continuous |
| Performances | Centaur Sloop | Centaur Ketch |
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. | 202 ft²/T18.78 m²/T | 183 ft²/T16.99 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. | 276 | 299 |
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. | 45 % | 42 % |
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. | 6.24 knots | 6.24 knots |
| Auxiliary engine | Centaur Sloop | Centaur Ketch |
Engine(s) | 1 inboard engine | 1 inboard engine |
Engine(s) power (min./max.) | 10 HP / 25 HP | 10 HP / 25 HP |
Fuel type | Diesel | Diesel |
Fuel tank capacity | 11.9 gal45 liters | 11.9 gal45 liters |
| Accommodations and layout | Centaur Sloop | Centaur Ketch |
Cockpit | Closed aft cockpit | Closed aft cockpit |
Cabin(s) | 1 | 1 |
Berth(s) (min./max.) | 4 / 6 | 4 / 6 |
Head(s) | 1 | 1 |
Freshwater tank capacity | 17.7 gal67 liters | 17.7 gal67 liters |
Maximum headroom | 6’1.83 m | 6’1.83 m |