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Sailboat specifications and datasheets

Idylle 15.50

The Idylle 15.50 is a 49’11” offshore monohull sailboat designed by German Frers. She was built by Bénéteau (France) and made of monolithic fiberglass / polyester. This sailboat was produced between 1985 and 1988.

The Idylle 15.50 belongs to the Idylle range.

Bénéteau Idylle 15.50 Bénéteau Idylle 15.50 sailplanBénéteau Idylle 15.50 layoutBénéteau Idylle 15.50 layoutBénéteau Idylle 15.50 sailingBénéteau Idylle 15.50 sailingBénéteau Idylle 15.50 accommodationsBénéteau Idylle 15.50 accommodationsBénéteau Idylle 15.50 accommodationsBénéteau Idylle 15.50 accommodations
Idylle 15.50's   Main Features
Model Idylle 15.50
Type of hull Monohull
Category Offshore cruising sailboat
Shipyard
Designer German Frers
Range Idylle
Construction Hull:
monolithic fiberglass / polyester
Deck:
sandwich balsa / fiberglass / polyester
First built hull 1985
Last built hull 1988
Appendages Keel :
Fin without bulb
Helm 1 wheel
Rudder 1 spade rudder
Cockpit Closed aft cockpit
Unsinkable No
Trailerable No
French navigation category 1
Standard public price ex. VAT (indicative only) N/A
Idylle 15.50's   Main dimensions
Length overall 51’ 5”
Hull length 49’ 11”
Waterline length 37’ 11”
Beam (width) 14’ 8”
Draft 6’
Light displacement 33069 lbs
Ballast weight 13007 lbs
Idylle 15.50's   Rig and sails
Upwind sail area 1410 sq.ft
Mainsail area 474 sq.ft
Genoa area 936 sq.ft
Staysail area 258 sq.ft
Stormjib area 161 sq.ft
Rigging type Cutter Marconi masthead
Rotating spars No
Mast position Keel stepped mast
Spars Mast and boom in Aluminum
Standing rigging 1x19 strand wire
Number of levels of spreaders 2
Spreaders angle 0 °
Idylle 15.50's   Performances
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.
21.54
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.
275
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.
39 %
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.
8.25 knots
Idylle 15.50's   Auxiliary engine
Engine(s) 1
Engine type Inboard engine
Engine 85 HP
Fuel type Diesel
Fuel tank capacity 132.1 gal
Idylle 15.50's   Accommodation
Cabin(s) (min/max) 3 / 4
Berth(s) (min/max) 6 / 12
Head(s) 3
Fresh water tank capacity 237.8 gal
Water heater capacity 11.1 gal
Maximum headroom 6’ 11”
Idylle 15.50's   Saloon
Maximum headroom 6’ 7”
Idylle 15.50's   Fore cabin
Berth length 6’ 7”
Berth width 4’ 7”

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