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Sailboat specifications and datasheets

First 27 shoal draft

The First 27, here in "shoal draft" version, is a 26’1” monohull sailboat designed by André Mauric. She was built by Bénéteau (France) and made of monolithic fiberglass / polyester. This sailboat was produced between 1978 and 1980 with about 70 hulls completed.

The First 27 belongs to the First range. The First 27 has also been marketed as Bénéteau R/C 27 and is as well listed, on Boat-Specs.com, in version Deep draft.

Bénéteau First 27 Bénéteau First 27 sailplanBénéteau First 27 layoutBénéteau First 27 sailingBénéteau First 27 sailingBénéteau First 27 accommodations
First 27's   Main Features
Model First 27
Version Shoal draft
Type of hull Monohull
Shipyard
Designer André Mauric
Range First
Construction Hull:
monolithic fiberglass / polyester
Deck:
sandwich fiberglass / polyester
First built hull 1978
Last built hull 1980
Number of hulls built About 70
Appendages Keel :
Fin without bulb
Helm 1 tiller
Rudder 1 spade rudder
Unsinkable No
Trailerable No
French navigation category 2
Standard public price (indicative only) N/A
First 27's   Main dimensions
Length overall 27’ 7”
Hull length 26’ 1”
Waterline length 21’ 6”
Beam (width) 9’ 10”
Draft 4’ 5”
Mast height from DWL 37’ 1”
Light displacement 5291 lbs
Ballast weight 1984 lbs
Ballast type Cast iron
French customs tonnage 5.90 Tx
First 27's   Rig and sails
Upwind sail area 436 sq.ft
Downwind sail area 753 sq.ft
Mainsail area 161 sq.ft
Genoa area 274 sq.ft
Solent area 215 sq.ft
Jib area 161 sq.ft
Stormjib area 32 sq.ft
Symetric spinnaker area 592 sq.ft
Rigging type Sloop Marconi masthead
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 °
IiFore triangle height (from mast foot to fore stay attachment) 34’
JiFore triangle base (from mast foot to bottom of forestay) 10’
PiMainsail hoist measurement (from tack to head) 29’ 6”
EiMainsail foot measurement (from tack to clew) 9’ 2”
First 27's   Performances
HN (French rating) 10.0
IOR rating 18.5
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.
22.59
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.
39.05
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.
242
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.
38 %
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.
6.21 knots
First 27's   Auxiliary engine
Engine(s) 1
Engine type Outboard or inboard engine
Engine (min/max) 8 HP / 16 HP
Fuel tank capacity 6.6 gal
First 27's   Accommodation
Cabin(s) 1
Berth(s) 6
Head(s) 1
Fresh water tank capacity 23.8 gal
Chart table 2’ 10” x 2’
Maximum headroom 5’ 11”
Galley headroom 5’ 11”
Head headroom 5’ 1”
First 27's   Saloon
Maximum headroom 5’ 11”
Saloon table length 3’
Saloon table width 2’ 5”
Berth length 6’ 7”
Berth width 2’ 2”
First 27's   Fore cabin
Maximum headroom 4’ 8”
Berth length 6’ 8”
Berth width 5’ 5”

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