Detailed sailboat specifications and datasheets since 2015
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First 50 Deep draft

Sailboat specifications

The First 50 is a 43’6” (13.25m) cruiser-racer sailboat designed by Philippe Briand (France). She was built since 2006 (and now discontinued) by Bénéteau (France). The Deep draft version features a deeper T-shaped keel to grant extra performance especially upwind.

The First 50 is as well listed, on Boat-Specs.com, in Standard version (see all the versions compared).

First 50's main features

Model
First 50
Version
Deep draft
Hull type
Monohull
Category
Cruiser-racer sailboat
Sailboat builder
Sailboat designer
Sailboat range
Country
France
Construction
GRP (glass reinforced polyester):
- Hull: Single skin fiberglass polyester
- Deck: Sandwich balsa fiberglass polyester
First built hull
2006
Last built hull
Discontinued
Appendages
Keel : T-shaped keel (with bulb)
Helm
Twin helm wheels
Rudder
Single spade 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
A
Standard public price ex. VAT (indicative only)
About 
276 000
 (2007)

First 50's main dimensions

Overall length
49’ 2”14.99 m
Hull length
43’ 6”13.25 m
Waterline length
43’ 6”13.25 m
Beam (width)
14’ 6”4.41 m
Draft
9’ 2”2.8 m
Mast height from DWL
73’ 4”22.35 m
Light displacement (MLC)
28914 lb13115 kg
Ballast weight
9480 lb4300 kg
Ballast type
Cast iron fin with lead bulb
French customs tonnage
26.00 Tx

First 50's rig and sails

Upwind sail area
1493 ft²138.7 m²
Downwind sail area
2461 ft²228.6 m²
Mainsail area
738 ft²68.6 m²
Genoa area
755 ft²70.1 m²
Symmetric spinnaker area
1722 ft²160 m²
I
 iFore triangle height (from mast foot to fore stay top attachment)
62’ 5”19.03 m
J
 iFore triangle base (from mast foot to bottom of forestay)
17’ 7”5.36 m
P
 iMainsail hoist measurement (from tack to head)
60’ 8”18.5 m
E
 iMainsail foot measurement (from tack to clew)
21’ 4”6.5 m
Rigging type
Sloop Marconi 9/10
Mast configuration
Keel stepped mast
Rotating spars
No
Number of levels of spreaders
3
Spreaders angle
Swept-back
Spars construction
Aluminum spars
Standing rigging
Single-strand (ROD) discontinuous

First 50's performances

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.
268 ft²/T24.94 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.
443 ft²/T41.11 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.
160
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.
33 %
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.
8.83 knots

First 50's auxiliary engine

Engine(s)
1 inboard engine
Engine(s) power
75 HP
Fuel type
Diesel
Fuel tank capacity
62.6 gal237 liters

First 50's accommodations and layout

Cockpit
Closing aft cockpit with opening system
Cabin(s)
3
Berth(s) (min./max.)
6 / 8
Head(s)
2
Freshwater tank capacity
150 gal568 liters
Holding tank capacity
21.1 gal80 liters
Fridge/ice-box capacity
42.3 gal160 liters
Boiler capacity
10.6 gal40 liters
Maximum headroom
6’ 7”2.01 m
Galley headroom
6’ 7”2 m
Head headroom
6’ 5”1.96 m

First 50's saloon

Maximum headroom
6’ 7”2.01 m
Berth length
6’ 6”1.97 m
Chart table
4’ 7”1.4 m x 4’ 7”1.4 m
Berth width
2’0.6 m

First 50's fore cabin

Maximum headroom
6’ 4”1.91 m
Berth length
6’ 7”2 m
Berth width
4’ 11”1.5 m

First 50's aft cabin

Maximum headroom
6’ 6”1.98 m
Berth length
6’ 7”2 m
Berth width (head/feet)
4’ 7”1.4 m / 3’ 11”1.2 m
Have you spotted incorrect data?  You can report it in the forum or contact the webmaster

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