X4⁹ Standard

Sailboat specifications

The X4⁹ is a 47’7” (14.5m) cruiser-racer sailboat designed by X-Yachts Design Group (Denmark). She is built since 2018 by X-Yachts (Denmark). She has been awarded "2019 - Cruising World - Boat of the Year: Full-Size Cruiser".

The X4⁹ is as well listed, on Boat-Specs.com, in Deep draft version (see all the versions compared).

X4⁹'s main features

Model

X4⁹

Version

Standard

Hull type

Monohull

Category

Offshore cruiser-racer sailboat

Sailboat builder

X-Yachts

Sailboat designer

X-Yachts Design Group

Country

Denmark

Construction

Fiberglass reinforced epoxy:
Sandwich Divinicell fiberglass epoxy (vacuum infusion)

First built hull

2018

Last built hull

Still in production

Award(s)

2019: Cruising World - Boat of the Year: Full-Size Cruiser

Appendages

Keel : L-shaped keel (with bulb)

Helm

Twin helm wheels

Rudder

Single spade rudder

Unsinkable

Trailerable

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

Standard public price ex. VAT (indicative only)

About

520 000 €

(2020)

X4⁹'s main dimensions

Overall length: 49’ 6”15.08 m
Hull length: 47’ 7”14.5 m
Waterline length: 43’ 6”13.25 m
Beam (width): 14’ 8”4.49 m
Draft: 7’ 11”2.4 m
Light displacement (M_LC): 28440 lb12900 kg
Ballast weight: 12015 lb5450 kg
Ballast type: Cast iron fin with lead bulb

X4⁹'s rig and sails

Upwind sail area: 1392 ft²129.3 m²
Downwind sail area: 3253 ft²302.2 m²
Mainsail area: 777 ft²72.2 m²
Genoa area: 615 ft²57.1 m²
Solent area: 518 ft²48.1 m²
Asymmetric spinnaker area: 2476 ft²230 m²
I iFore triangle height (from mast foot to fore stay top attachment): 64’ 10”19.76 m
J iFore triangle base (from mast foot to bottom of forestay): 17’ 11”5.45 m
P iMainsail hoist measurement (from tack to head): 62’ 4”19 m
E iMainsail foot measurement (from tack to clew): 21’ 8”6.6 m
Rigging type: Sloop Marconi 19/20
Mast configuration: Keel stepped mast
Rotating spars: Yes
Number of levels of spreaders: 3
Spreaders angle: Swept-back
Spars construction: Aluminum spars (carbon fiber spars as an option)
Standing rigging: Single-strand (ROD) discontinuous

X4⁹'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.: 253 ft²/T23.51 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.: 591 ft²/T54.94 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.: 157
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.: 42 %
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