| Main features | First 456 Deep draft |
Model | First 456 |
Version | Deep draft |
Hull type | Monohull |
Category | Offshore cruiser-racer sailboat |
Sailboat builder | Bénéteau |
Sailboat designer | |
Sailboat range | |
Country | France |
Construction | Hull and deck: GRP (glass reinforced polyester) |
First built hull | 1982 |
Last built hull | 1987 |
Appendages | Keel : fin without bulb |
Helm | Single helm wheel |
Rudder | Single spade rudder |
Unsinkable | No |
Trailerable | No |
Former French navigation category | 1 |
| Main dimensions | First 456 Deep draft |
Overall length | 46’ 7”14.2 m |
Hull length | 45’ 10”13.95 m |
Waterline length | 39’ 5”12 m |
Beam (width) | 14’ 1”4.3 m |
Draft | 7’ 11”2.4 m |
Light displacement (MLC) | 26455 lb12000 kg |
Ballast weight | 10362 lb4700 kg |
| Rig and sails | First 456 Deep draft |
Upwind sail area | 1238 ft²115 m² |
Downwind sail area | 2217 ft²206 m² |
Mainsail area | 441 ft²41 m² |
Genoa area | 797 ft²74 m² |
Jib area | 431 ft²40 m² |
Stormjib area | 161 ft²15 m² |
Symmetric spinnaker area | 1776 ft²165 m² |
Rigging type | Sloop Marconi masthead |
Mast configuration | Keel stepped mast |
Rotating spars | No |
Number of levels of spreaders | 2 |
Spreaders angle | 0 ° |
Running backstays | 1 set(s) |
Spars construction | Aluminum spars |
| Performances | First 456 Deep draft |
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. | 236 ft²/T21.94 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. | 423 ft²/T39.3 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. | 197 |
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. | 39 % |
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. | 8.41 knots |
| Auxiliary engine | First 456 Deep draft |
Engine(s) | 1 inboard engine |
Engine(s) power (min./max.) | 55 HP / 80 HP |
Fuel type | Diesel |
Fuel tank capacity | 52.8 gal200 liters |
| Accommodations and layout | First 456 Deep draft |
Cockpit | Closed aft cockpit |
Cabin(s) (min./max.) | 2 / 4 |
Berth(s) (min./max.) | 4 / 10 |
Head(s) (min./max.) | 2 / 3 |
Freshwater tank capacity | 105.7 gal400 liters |
Boiler capacity | 11.1 gal42 liters |