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Sailboat specifications and datasheets

Kirk

The Kirk is a 35’2” offshore monohull sailboat designed by Henri Amel. She was built by Amel (France) and made of GRP (glass reinforced polyester). This sailboat was produced between 1971 and 1980 with 276 hulls completed.
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Kirk's   Main Features
Model Kirk
Type of hull Monohull
Category Cruising sailboat
Shipyard
Designer Henri Amel
Construction GRP (glass reinforced polyester)
First built hull 1971
Last built hull 1980
Number of hulls built 276
Appendages Keel :
L-shaped keel (with bulb)
Helm 1 tiller
Rudder 1 semi-spade rudder
Cockpit Central cockpit
Unsinkable No
Trailerable No
French navigation category 1
Standard public price ex. VAT (indicative only) N/A
Kirk's   Main dimensions
Hull length 35’ 2”
Waterline length 28’ 2”
Beam (width) 9’ 11”
Waterline beam (width) 9’ 5”
Draft 5’ 4”
Mast height from DWL 47’ 11”
Fore freeboard 3’ 8”
Mid-ship freeboard 2’ 8”
Light displacement 11023 lbs
Maximum displacement 14330 lbs
Ballast weight 4255 lbs
Ballast type Cast iron
French customs tonnage 9.09 Tx
Kirk's   Rig and sails
Upwind sail area 570 sq.ft
Downwind sail area 989 sq.ft
Mainsail area 214 sq.ft
Genoa area 357 sq.ft
Jib area 184 sq.ft
Stormjib area 43 sq.ft
Symetric spinnaker area 775 sq.ft
Rigging type Sloop Marconi masthead
Rotating spars No
Mast position Deck stepped mast
Spars Mast and boom in Aluminum
Standing rigging 1x19 strand wire continuous
Number of levels of spreaders 1
Spreaders angle 0 °
Kirk's   Performances
IOR rating 25.4
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.
18.13
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.
31.41
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.
223
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 %
Wetted surface 296 sq.ft
Maximum transverse section 17 sq.ft
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.
7.12 knots
Kirk's   Auxiliary engine
Engine(s) 1
Engine type Inboard engine
Engine (min/max) 15 HP / 25 HP
Fuel type Diesel
Kirk's   Accommodation
Cabin(s) 2
Berth(s) (min/max) 6 / 7
Head(s) 1
Fresh water tank capacity 66 gal
Maximum headroom 5’ 11”

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