Detailed sailboat specifications and datasheets since 2015
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Impression 45.1 Standard

Sailboat specifications

The Impression 45.1 is a 42’8” (13m) cruising sailboat designed by Humphreys Yacht Design (United Kingdom). She is built since 2019 by Elan Yachts (Slovenia).

The Impression 45.1 is as well listed, on Boat-Specs.com, in Shoal draft version (see all the versions compared).

Find out more about the Impression 45.1 on Boat-Spec's blog: European Yacht of the Year 2020 nominated sailboats.

Impression 45.1's main features

Model
Impression 45.1
Version
Standard
Hull type
Monohull
Category
Deck saloon cruising sailboat
Sailboat builder
Sailboat designer
Sailboat range
Country
Slovenia
Construction
GRP (glass reinforced polyester):
- Hull: Sandwich foam fiberglass vinylester (vacuum infusion)
- Deck: Sandwich foam fiberglass vinylester (vacuum infusion)
First built hull
2019
Last built hull
Still in production
Appendages
Keel : L-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 
206 000
 (2020)

Impression 45.1's main dimensions

Overall length
45’ 5”13.85 m
Hull length
42’ 8”13 m
Waterline length
37’ 6”11.44 m
Beam (width)
13’ 8”4.18 m
Draft
6’ 2”1.9 m
Mast height from DWL
64’19.5 m
Light displacement (MLC)
22972 lb10420 kg
Ballast weight
7297 lb3310 kg
Ballast type
Cast iron

Impression 45.1's rig and sails

Upwind sail area
993 ft²92.22 m²
Downwind sail area
1886 ft²175.2 m²
Mainsail area
428 ft²39.75 m²
Genoa area
565 ft²52.47 m²
Gennaker area
1458 ft²135.45 m²
I
 iFore triangle height (from mast foot to fore stay top attachment)
52’ 2”15.9 m
J
 iFore triangle base (from mast foot to bottom of forestay)
15’ 8”4.78 m
P
 iMainsail hoist measurement (from tack to head)
48’ 7”14.8 m
E
 iMainsail foot measurement (from tack to clew)
17’ 7”5.37 m
Rigging type
Sloop Marconi (in-mast furling mainsail) 9/10
Mast configuration
Deck stepped mast
Rotating spars
No
Number of levels of spreaders
2
Spreaders angle
Swept-back
Spars construction
Aluminum spars
Standing rigging
1x19 strand wire discontinuous

Impression 45.1'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.
208 ft²/T19.33 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.
395 ft²/T36.72 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.
197
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.
32 %
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.
8.21 knots

Impression 45.1's auxiliary engine

Engine(s)
1 inboard engine
Engine(s) power (min./max.)
50 HP / 75 HP
Fuel type
Diesel
Fuel tank capacity
56.8 gal215 liters

Impression 45.1's accommodations and layout

Cockpit
Closing aft cockpit with opening system
Cabin(s) (min./max.)
3 / 4
Berth(s) (min./max.)
6 / 10
Head(s)
2
Freshwater tank capacity
136.3 gal516 liters
Have you spotted incorrect data?  You can report it in the forum or contact the webmaster

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