| Main features | Dufour 4800 Deep draft |
Model | Dufour 4800 |
Version | Deep draft |
Hull type | Monohull |
Category | Cruising sailboat |
Sailboat builder | Dufour |
Sailboat designer | |
Country | France |
Construction | GRP (glass reinforced polyester): - Hull: Single skin fiberglass polyester - Deck: Sandwich balsa fiberglass polyester |
Number of hulls built | About 250 |
First built hull | 1981 |
Last built hull | 1985 |
Appendages | Keel : fin without bulb |
Helm | Single tiller (helm wheel in option) |
Rudder | Single semi-spade rudder |
Unsinkable | No |
Trailerable | No |
Former French navigation category | 1 |
| Main dimensions | Dufour 4800 Deep draft |
Hull length | 34’ 11”10.65 m |
Waterline length | 27’ 7”8.4 m |
Beam (width) | 11’ 2”3.4 m |
Draft | 6’ 1”1.85 m |
Mast height from DWL | 45’ 11”14 m |
Light displacement (MLC) | 10582 lb4800 kg |
Ballast weight | 5181 lb2350 kg |
Ballast type | Cast iron |
French customs tonnage | 9.99 Tx |
| Rig and sails | Dufour 4800 Deep draft |
Upwind sail area | 700 ft²65 m² |
Downwind sail area | 1227 ft²114 m² |
Mainsail area | 215 ft²20 m² |
Genoa area | 484 ft²45 m² |
Solent area | 334 ft²31 m² |
Jib area | 172 ft²16 m² |
Stormjib area | 75 ft²7 m² |
Symmetric spinnaker area | 1012 ft²94 m² |
I iFore triangle height (from mast foot to fore stay top attachment) | 42’ 8”13 m |
J iFore triangle base (from mast foot to bottom of forestay) | 14’ 7”4.44 m |
P iMainsail hoist measurement (from tack to head) | 36’ 8”11.2 m |
E iMainsail foot measurement (from tack to clew) | 10’ 6”3.2 m |
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 |
| Performances | Dufour 4800 Deep draft |
HN (French rating) iHN or "Handicap Nationale" is an empirical rating system used in France allowing various monohulls, of different sizes and designs, to race each other fairly. It is particularly suitable for cruiser and cruiser-racer. Therefore, by comparing these values, we can have an indication of the relative speed of 2 boats. | 17.5 |
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. | 246 ft²/T22.84 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. | 431 ft²/T40.06 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. | 229 |
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. | 49 % |
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. | 7.03 knots |
| Auxiliary engine | Dufour 4800 Deep draft |
Engine(s) | 1 inboard engine |
Engine(s) power (min./max.) | 24 HP / 28 HP |
Fuel type | Diesel |
Fuel tank capacity | 23.8 gal90 liters |
| Accommodations and layout | Dufour 4800 Deep draft |
Cockpit | Closed aft cockpit |
Freshwater tank capacity | 68.7 gal260 liters |
Fridge/ice-box capacity | 29.1 gal110 liters |
Galley headroom | 6’ 1”1.85 m |
Head headroom | 5’ 11”1.81 m |
| Saloon | Dufour 4800 Deep draft |
Maximum headroom | 6’1.83 m |
| Aft cabin | Dufour 4800 Deep draft |
Maximum headroom | 5’ 11”1.81 m |
Berth length | 6’ 7”2 m |