Detailed sailboat specifications and datasheets since 2015
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First 20

Sailboat specifications

The First 20 is a 20’6” (6.25m) cruiser-racer sailboat designed by Finot Conq Architectes (France). She was built between 2013 and 2018 by Bénéteau (France).

First 20's main features

Model
First 20
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
2013
Last built hull
2018
Appendages
Lifting keel : swing keel
Helm
Single tiller
Rudder
Twin transom hung rudders
Unsinkable
No
Trailerable
Yes
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
C
Standard public price ex. VAT (indicative only)
About 
22 300
 (2017)

First 20's main dimensions

Overall length
21’6.4 m
Hull length
20’ 6”6.25 m
Waterline length
19’ 8”6 m
Beam (width)
8’ 1”2.48 m
Draft
5’ 11”1.8 m
Draft when appendages up
2’ 4”0.7 m
Mast height from DWL
31’ 2”9.5 m
Light displacement (MLC)
2745 lb1245 kg
Ballast weight
661 lb300 kg
Ballast type
Cast iron

First 20's rig and sails

Upwind sail area
245 ft²22.78 m²
Downwind sail area
435 ft²40.4 m²
Mainsail area
170 ft²15.8 m²
Jib area
75 ft²6.98 m²
Asymmetric spinnaker area
265 ft²24.6 m²
Code 0 area
161 ft²15 m²
I
 iFore triangle height (from mast foot to fore stay top attachment)
23’7 m
J
 iFore triangle base (from mast foot to bottom of forestay)
7’ 10”2.37 m
P
 iMainsail hoist measurement (from tack to head)
24’ 4”7.4 m
E
 iMainsail foot measurement (from tack to clew)
10’ 4”3.15 m
Rigging type
Sloop Marconi 9/10
Mast configuration
Deck stepped mast
Rotating spars
No
Number of levels of spreaders
1
Spreaders angle
Swept-back
Spars construction
Aluminum spars
Standing rigging
1x19 strand wire continuous

First 20'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.
212 ft²/T19.68 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.
376 ft²/T34.91 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.
163
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.
24 %
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.
5.95 knots

First 20's auxiliary engine

Engine(s)
1 outboard engine
Engine(s) power (min./max.)
4 HP / 10 HP

First 20's accommodations and layout

Cockpit
Closed aft cockpit
Berth(s) (min./max.)
2 / 4
Maximum headroom
4’ 10”1.45 m

First 20's saloon

Maximum headroom
4’ 10”1.45 m
Berth length
7’ 2”2.2 m
Berth width
2’0.6 m

First 20's fore cabin

Berth length
6’ 2”1.9 m
Berth width
4’ 7”1.4 m
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