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Sailboat specifications and datasheets

First 25 - 2013 swing keel

The First 25 - 2013, here in "swing keel" version, is a 24’7” coastal monohull sailboat designed by Jean Marie Finot and Pascal Conq. She was built by Bénéteau (France) and made of monolithic fiberglass / polyester. The production started in 2013 .

The First 25 - 2013 belongs to the First range. The First 25 - 2013 is as well listed, on Boat-Specs.com, in version Shoal draft.

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First 25 - 2013's   Main Features
Model First 25 - 2013
Version Swing keel
Type of hull Monohull
Category Cruiser-racer sailboat
Shipyard
Designer Jean Marie Finot
Pascal Conq
Range First
Construction Hull:
monolithic fiberglass / polyester
Deck:
sandwich balsa / fiberglass / polyester
First built hull 2013
Last built hull Still in production
Appendages Keel (lifting) :
Swing keel
Helm 1 tiller
Rudder 2 transom hung rudders
Cockpit Closed aft cockpit
Unsinkable No
Trailerable No
EC certification C
Standard public price ex. VAT (indicative only) About
45 900
(2017)
First 25 - 2013's   Main dimensions
Length overall 25’ 11”
Hull length 24’ 7”
Waterline length 24’ 1”
Beam (width) 9’
Draft 6’ 1”
Draft when appendages up 2’ 10”
Light displacement 4740 lbs
Ballast weight 1367 lbs
Ballast type Cast iron
First 25 - 2013's   Rig and sails
Upwind sail area 418 sq.ft
Downwind sail area 866 sq.ft
Mainsail area 264 sq.ft
Jib area 154 sq.ft
Asymetric spinnaker area 603 sq.ft
Code 0 area 268 sq.ft
Rigging type Sloop Marconi 9/10
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 Swept-back
IiFore triangle height (from mast foot to fore stay attachment) 30’ 1”
JiFore triangle base (from mast foot to bottom of forestay) 9’ 10”
PiMainsail hoist measurement (from tack to head) 31’ 2”
EiMainsail foot measurement (from tack to clew) 12’ 10”
First 25 - 2013'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.
23.29
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.
48.32
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.
153
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.
29 %
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.
6.58 knots
First 25 - 2013's   Auxiliary engine
Engine(s) 1
Engine type Inboard engine
Engine 14 HP
Fuel type Diesel
Fuel tank capacity 7.9 gal
First 25 - 2013's   Accommodation
Cabin(s) 1
Berth(s) (min/max) 2 / 4
Head(s) 1
Fresh water tank capacity 10.6 gal
Holding tank capacity 13.2 gal
Fridge/ice-box capacity 13.2 gal
Chart table 2’ 4” x 2’
Maximum headroom 5’ 10”
Galley headroom 5’ 4”
First 25 - 2013's   Saloon
Maximum headroom 5’ 7”
Berth length 6’ 5”
Berth width 2’
First 25 - 2013's   Fore cabin
Maximum headroom 5’ 1”
Berth length 6’ 2”
Berth width 4’ 11”

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