Detailed sailboat specifications and datasheets since 2015
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IMX 45

Sailboat specifications

The IMX 45 is a 45’1” (13.75m) racer-cruiser sailboat designed by Niels Jeppesen (Denmark). She was built between 2002 and 2004 by X-Yachts (Denmark) with 24 hulls completed.

IMX 45's main features

Model
IMX 45
Hull type
Monohull
Category
Offshore racer-cruiser sailboat
Sailboat builder
Sailboat designer
Sailboat range
Country
Denmark
Construction
GRP (glass reinforced polyester):
Sandwich Divinicell fiberglass vinylester
Number of hulls built
24
First built hull
2002
Last built hull
2004
Appendages
Keel : L-shaped keel (with bulb)
Helm
Single helm wheel
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)
N/A

IMX 45's main dimensions

Hull length
45’ 1”13.75 m
Waterline length
39’ 4”11.97 m
Beam (width)
13’ 7”4.15 m
Draft
9’2.75 m
Light displacement (MLC)
20062 lb9100 kg
Ballast weight
9105 lb4130 kg
Ballast type
Cast iron fin with lead bulb

IMX 45's rig and sails

Upwind sail area
1384 ft²128.6 m²
Downwind sail area
2455 ft²228.1 m²
Mainsail area
701 ft²65.1 m²
Genoa area
684 ft²63.5 m²
Solent area
547 ft²50.8 m²
Jib area
366 ft²34 m²
Symmetric spinnaker area
1755 ft²163 m²
I
 iFore triangle height (from mast foot to fore stay top attachment)
61’ 8”18.8 m
J
 iFore triangle base (from mast foot to bottom of forestay)
16’ 5”4.99 m
P
 iMainsail hoist measurement (from tack to head)
59’ 11”18.25 m
E
 iMainsail foot measurement (from tack to clew)
20’ 4”6.2 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
Carbon fiber spars

IMX 45'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.
318 ft²/T29.5 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.
563 ft²/T52.33 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.
150
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.
45 %
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.
8.40 knots

IMX 45's auxiliary engine

Engine(s)
1 inboard engine
Engine(s) power
55 HP
Fuel type
Diesel

IMX 45's accommodations and layout

Cockpit
Closed aft cockpit
Cabin(s) (min./max.)
2 / 3
Berth(s) (min./max.)
5 / 10
Head(s) (min./max.)
1 / 2
Maximum headroom
6’ 7”2 m
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