Detailed sailboat specifications and datasheets since 2015
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Marlow Hunter 40 (Shoal draft)

Main featuresMarlow Hunter 40 Shoal draft
Model
Marlow Hunter 40
Version
Shoal draft
Hull type
Monohull
Category
Cruising sailboat
Sailboat builder
Marlow Hunter
Sailboat designer
Country
United States
Construction
GRP (glass reinforced polyester):
Single skin bottom, sandwich sides and deck: balsa fiberglass polyester with Kevlar reinforcements
First built hull
2013
Last built hull
Still in production
Appendages
Keel : wing keel
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
 
Main dimensionsMarlow Hunter 40 Shoal draft
Overall length
41’ 2”12.57 m
Hull length
40’12.19 m
Waterline length
36’10.97 m
Beam (width)
13’ 2”4.01 m
Draft
5’ 2”1.57 m
Mast height from DWL
61’ 8”18.82 m
Light displacement (MLC)
19701 lb8936 kg
Ballast weight
6027 lb2734 kg
Ballast type
Cast iron
 
Rig and sailsMarlow Hunter 40 Shoal draft
Upwind sail area
1006 ft²93.46 m²
Rigging type
Sloop Marconi (in-mast furling mainsail) fractional
Mast configuration
Deck stepped mast
Rotating spars
No
Number of levels of spreaders
2
Spreaders angle
Swept-back (Bergström)
Spars construction
Aluminum spars
Standing rigging
1x19 strand wire
 
PerformancesMarlow Hunter 40 Shoal draft
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.
234 ft²/T21.7 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.
192
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.
31 %
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.
8.04 knots
 
Auxiliary engineMarlow Hunter 40 Shoal draft
Engine(s)
1 inboard engine
Engine(s) power
40 HP
Fuel type
Diesel
Fuel tank capacity
49.9 gal189 liters
 
Accommodations and layoutMarlow Hunter 40 Shoal draft
Cockpit
Closing aft cockpit with opening system
Cabin(s)
2
Berth(s) (min./max.)
4 / 6
Head(s)
2
Freshwater tank capacity
90.1 gal341 liters
Holding tank capacity
39.9 gal151 liters
Boiler capacity
5 gal19 liters
Maximum headroom
6’ 6”1.98 m
 
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