Detailed sailboat specifications and datasheets since 2015
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Fun

Sailboat specifications

The Fun is a 23’4” (7.1m) multiple crew one design sailboat designed by Joubert Nivelt Design (France). She is built since 1982 by Jeanneau (France) and Lillia, Cantiere Nautico (Italy).

Fun's main features

Model
Fun
Hull type
Monohull
Category
Multiple crew one design sailboat
Sailboat builder
Sailboat designer
Country
France
Construction
GRP (glass reinforced polyester):
- Hull: Single skin fiberglass polyester
- Deck: Sandwich balsa fiberglass polyester
Number of hulls built
About 500
First built hull
1982
Last built hull
Still in production
Appendages
Lifting keel : swing keel
Helm
Single tiller
Rudder
Single spade rudder
Unsinkable
No
Trailerable
Yes
Former French navigation category
3
Standard public price ex. VAT (indicative only)
N/A

Fun's main dimensions

Overall length
24’ 7”7.5 m
Hull length
23’ 4”7.1 m
Waterline length
17’ 11”5.45 m
Beam (width)
8’2.45 m
Draft
5’ 2”1.6 m
Draft when appendages up
2’ 4”0.7 m
Light displacement (MLC)
1764 lb800 kg
Ballast weight
750 lb340 kg
Ballast type
Cast iron
French customs tonnage
3.28 Tx

Fun's rig and sails

Upwind sail area
292 ft²27.1 m²
Downwind sail area
562 ft²52.25 m²
Mainsail area
146 ft²13.6 m²
Genoa area
145 ft²13.5 m²
Jib area
87 ft²8.1 m²
Symmetric spinnaker area
416 ft²38.65 m²
I
 iFore triangle height (from mast foot to fore stay top attachment)
22’ 1”6.75 m
J
 iFore triangle base (from mast foot to bottom of forestay)
8’ 8”2.64 m
P
 iMainsail hoist measurement (from tack to head)
27’ 11”8.5 m
E
 iMainsail foot measurement (from tack to clew)
10’ 6”3.2 m
Rigging type
Sloop Marconi fractional
Mast configuration
Deck stepped mast
Rotating spars
No
Number of levels of spreaders
1
Spreaders angle
Swept-back
Spars construction
Aluminum spars
Standing rigging
1x19 strand wire continuous

Fun's performances

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.
16.5
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.
339 ft²/T31.45 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.
653 ft²/T60.63 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.
140
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.
43 %
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.
5.67 knots

Fun's auxiliary engine

Engine(s)
Outboard engine
Engine(s) power
6 HP

Fun's accommodations and layout

Cockpit
Open aft cockpit
Berth(s)
4

Fun's saloon

Maximum headroom
4’1.22 m
Berth length
6’ 7”2 m
Berth width
1’ 10”0.55 m

Fun's fore cabin

Berth length
6’ 7”2 m
Berth width
4’ 11”1.5 m
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