Detailed sailboat specifications and datasheets since 2015
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First 27.7 (Shoal draft)

Main featuresFirst 27.7 Shoal draft
Model
First 27.7
Version
Shoal draft
Hull type
Monohull
Category
Cruiser-racer sailboat
Sailboat builder
Bénéteau
Sailboat designer
Sailboat range
Country
France
Construction
GRP (glass reinforced polyester):
- Hull: Single skin fiberglass polyester
- Deck: Sandwich balsa fiberglass polyester (vacuum infusion)
First built hull
2002
Last built hull
2015
Award(s)
  • 2003: European Yacht of the Year: L < 10m
    Appendages
    Keel : fin with bulb
    Helm
    Single tiller
    Rudder
    Single transom hung rudder
    Unsinkable
    No
    Trailerable
    No
    EC design category
     iThe CE design category indicates the ability to cope with certain weather conditions (the sailboat is designed for these conditions)

    A: Wind < force 9, Waves < 10m
    B: Wind < force 8, Waves < 8m
    C: Wind < force 6, Waves < 4m
    D: Wind < force 4, Waves < 0,5m
    B
     
    Main dimensionsFirst 27.7 Shoal draft
    Hull length
    27’ 2”8.3 m
    Waterline length
    27’ 2”8.3 m
    Beam (width)
    9’ 10”3 m
    Draft
    4’ 10”1.45 m
    Mast height from DWL
    44’ 11”13.7 m
    Light displacement (MLC)
    6603 lb2995 kg
    Ballast weight
    1918 lb870 kg
    Ballast type
    Cast iron
    French customs tonnage
    7.26 Tx
     
    Rig and sailsFirst 27.7 Shoal draft
    Upwind sail area
    525 ft²48.8 m²
    Downwind sail area
    990 ft²92 m²
    Mainsail area
    299 ft²27.8 m²
    Genoa area
    226 ft²21 m²
    Symmetric spinnaker area
    691 ft²64.2 m²
    Asymmetric spinnaker area
    618 ft²57.4 m²
    I
     iFore triangle height (from mast foot to fore stay top attachment)
    38’ 2”11.63 m
    J
     iFore triangle base (from mast foot to bottom of forestay)
    10’ 6”3.19 m
    P
     iMainsail hoist measurement (from tack to head)
    36’10.96 m
    E
     iMainsail foot measurement (from tack to clew)
    13’ 10”4.21 m
    Rigging type
    Sloop Marconi 19/20
    Mast configuration
    Deck stepped mast
    Rotating spars
    No
    Number of levels of spreaders
    1
    Spreaders angle
    Swept-back
    Spars construction
    Aluminum spars
     
    PerformancesFirst 27.7 Shoal draft
    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.
    253 ft²/T23.49 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.
    477 ft²/T44.28 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.
    148
    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.
    29 %
    Prismatic coefficient
     iThe prismatic coefficient is obtained by dividing the volume of the boat (mass divided by the density of water) by the waterline length multiplied by the area of the maximum transverse section.

    This coefficient describes the effectiveness of a sailboat for a certain speed range: lower is the coefficient (<0.45), more effective the yacht is below its hull speed; higher the coefficient is, more the boat is suitable for planning speed.
    0.59
    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.
    6.99 knots
     
    Auxiliary engineFirst 27.7 Shoal draft
    Engine(s)
    1 inboard engine
    Engine(s) power
    14 HP
    Fuel type
    Diesel
    Fuel tank capacity
    7.9 gal30 liters
     
    Accommodations and layoutFirst 27.7 Shoal draft
    Cockpit
    Closed aft cockpit
    Cabin(s)
    1
    Berth(s) (min./max.)
    4 / 6
    Head(s)
    1
    Freshwater tank capacity
    13.2 gal50 liters
    Holding tank capacity
    13.2 gal50 liters
    Fridge/ice-box capacity
    10.6 gal40 liters
    Maximum headroom
    5’ 8”1.75 m
    Galley headroom
    5’ 2”1.6 m
    Head headroom
    5’ 2”1.6 m
     
    SaloonFirst 27.7 Shoal draft
    Berth length
    6’ 5”1.95 m
    Chart table
    3’ 4”1 m x 2’ 4”0.69 m
    Berth width
    1’ 7”0.5 m
     
    Fore cabinFirst 27.7 Shoal draft
    Berth length
    7’ 6”2.28 m
    Berth width
    5’ 6”1.67 m
     
    Aft cabinFirst 27.7 Shoal draft
    Maximum headroom
    5’ 2”1.6 m
    Berth length
    6’ 6”1.98 m
    Berth width
    4’ 4”1.3 m
     
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