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Sailboat specifications and datasheets

Fun

The Fun is a 23’4” monohull sailboat designed by Michel Joubert and Bernard Nivelt. She was built by Jeanneau (France) and made of monolithic fiberglass / polyester. The production started in 1982 with about 500 hulls completed.
Jeanneau Fun Jeanneau Fun sailplanJeanneau Fun layoutJeanneau Fun layoutJeanneau Fun sailingJeanneau Fun cockpit
Fun's   Main Features
Model Fun
Type of hull Monohull
Shipyard
Designer Michel Joubert
Bernard Nivelt
Construction Hull:
monolithic fiberglass / polyester
Deck:
sandwich balsa / fiberglass / polyester
First built hull 1982
Number of hulls built About 500
Appendages Keel (lifting) :
Swing keel
Helm 1 tiller
Rudder 1 spade rudder
Unsinkable No
Trailerable Yes
French navigation category 3
Standard public price (indicative only) N/A
Fun's   Main dimensions
Length overall 24’ 7”
Hull length 23’ 4”
Waterline length 17’ 11”
Beam (width) 8’
Draft 5’ 2”
Draft when appendages up 2’ 4”
Light displacement 1764 lbs
Ballast weight 750 lbs
Ballast type Cast iron
French customs tonnage 3.28 Tx
Fun's   Rig and sails
Upwind sail area 292 sq.ft
Downwind sail area 562 sq.ft
Mainsail area 146 sq.ft
Genoa area 145 sq.ft
Jib area 87 sq.ft
Symetric spinnaker area 416 sq.ft
Rigging type Sloop Marconi fractional
Spars Mast and boom in Aluminum
Standing rigging 1x19 strand wire continuous
Number of levels of spreaders 1
Spreaders angle Swept-back
IiFore triangle height (from mast foot to fore stay attachment) 22’ 1”
JiFore triangle base (from mast foot to bottom of forestay) 8’ 8”
PiMainsail hoist measurement (from tack to head) 27’ 11”
EiMainsail foot measurement (from tack to clew) 10’ 6”
Fun's   Performances
HN (French rating) 16.5
Upwind sail area to displacementiThe 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 23 it indicates a fast sailboat.
31.45
Downwind sail area to displacementiThe 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 23 it indicates a fast sailboat.
60.63
Displacement-Length ratio (DLR)iThe Displacement Length ratio is a figure that points out the boat's weight compared to its waterline length. 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.
140
Ballast ratioiThe Ballast ratio is an indicator of the stability; it is obtained by dividing the boat's displacement by the weight of the ballast. Since the stability depends also of the hull shape and the position of the center of gravity, only boats with similar ballast arrangements and hull shape should be considered.
Higher the ballast ratio is, greater is the stability.
43 %
Hull speediAs 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.
5.67 knots
Fun's   Auxiliary engine
Engine type Outboard engine
Engine 6 HP
Fun's   Accommodation
Berth(s) 4
Fun's   Saloon
Maximum headroom 4’
Berth length 6’ 7”
Berth width 1’ 10”
Fun's   Fore cabin
Berth length 6’ 7”
Berth width 4’ 11”

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