Detailed sailboat specifications and datasheets since 2015
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Marlow Hunter 50 Shoal draft

Sailboat specifications

The Marlow Hunter 50 is a 47’10” (14.58m) cruising sailboat designed by Hunter Design (United States). She is built since 2011 by Marlow Hunter (United States). The Shoal draft version is offered with a short keel fitted with large winglets. This configuration provides an interesting draft / low center of gravity / upwind performance trade-off.

The Marlow Hunter 50 is as well listed, on, in Furling mainsail, Tall rig and Deep draft version (see all the versions compared).

Marlow Hunter 50's main features

Marlow Hunter 50
Shoal draft
Hull type
Offshore cruising sailboat
Sailboat builder
Sailboat designer
United States
GRP (glass reinforced polyester):
Single skin bottom, sandwich sides and deck: balsa fiberglass polyester with Kevlar reinforcements
First built hull
Last built hull
Still in production
Keel : wing keel
Twin helm wheels
Single spade rudder
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)

Marlow Hunter 50's main dimensions

Overall length
49’ 11”15.21 m
Hull length
47’ 10”14.58 m
Waterline length
43’ 10”13.36 m
Beam (width)
14’ 8”4.47 m
5’ 6”1.68 m
Mast height from DWL
64’ 4”19.61 m
Light displacement (MLC)
32814 lb14884 kg
Ballast weight
12500 lb5670 kg
Ballast type
Cast iron

Marlow Hunter 50's rig and sails

Upwind sail area
1238 ft²115 m²
 iFore triangle height (from mast foot to fore stay top attachment)
54’ 7”16.64 m
 iFore triangle base (from mast foot to bottom of forestay)
16’ 6”5.03 m
 iMainsail hoist measurement (from tack to head)
51’ 7”15.73 m
 iMainsail foot measurement (from tack to clew)
21’ 10”6.65 m
Rigging type
Sloop Marconi (in-mast furling mainsail) fractional
Mast configuration
Deck stepped mast
Rotating spars
Number of levels of spreaders
Spreaders angle
Swept-back (Bergström)
Spars construction
Aluminum spars
Standing rigging
1x19 strand wire

Marlow Hunter 50'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.
205 ft²/T19.01 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.
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.
38 %
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.
8.87 knots

Marlow Hunter 50's auxiliary engine

1 inboard engine
Engine(s) power (min./max.)
75 HP / 110 HP
Fuel type
Fuel tank capacity
150 gal568 liters

Marlow Hunter 50's accommodations and layout

Open aft cockpit
Cabin(s) (min./max.)
3 / 4
Berth(s) (min./max.)
6 / 10
Head(s) (min./max.)
2 / 3
Freshwater tank capacity
200 gal757 liters
Holding tank capacity
52 gal197 liters
Boiler capacity
11.1 gal42 liters
Maximum headroom
6’ 10”2.06 m
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