Detailed sailboat specifications and datasheets since 2015
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J/160 Standard

Sailboat specifications

The J/160 is a 52’8” (16.06m) fast cruising sailboat designed by Rod Johnstone (United States). She was built between 1995 and 2000 by J/Boats (United States) with 35 hulls completed.

The J/160 is as well listed, on Boat-Specs.com, in Deep draft version (see all the versions compared).

J/160's main features

Model
J/160
Version
Standard
Hull type
Monohull
Category
Offshore fast cruising sailboat
Sailboat builder
Sailboat designer
Country
United States
Construction
GRP (glass reinforced polyester):
Sandwich balsa fiberglass vinylester (vacuum infusion)
Number of hulls built
35
First built hull
1995
Last built hull
2000
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

J/160's main dimensions

Hull length
52’ 8”16.06 m
Waterline length
47’ 6”14.48 m
Beam (width)
14’ 6”4.42 m
Draft
7’ 2”2.19 m
Mast height from DWL
72’21.95 m
Light displacement (MLC)
32187 lb14600 kg
Ballast weight
12015 lb5450 kg
Ballast type
Lead

J/160's rig and sails

Upwind sail area
1375 ft²127.73 m²
I
 iFore triangle height (from mast foot to fore stay top attachment)
66’ 6”20.27 m
J
 iFore triangle base (from mast foot to bottom of forestay)
18’ 10”5.74 m
P
 iMainsail hoist measurement (from tack to head)
62’18.9 m
E
 iMainsail foot measurement (from tack to clew)
24’ 1”7.36 m
Rigging type
Sloop Marconi fractional
Mast configuration
Keel stepped mast
Rotating spars
No
Spreaders angle
No spreader
Spars construction
Carbon fiber mast and aluminum boom

J/160'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.
230 ft²/T21.38 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.
136
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.
37 %
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.
9.24 knots

J/160's auxiliary engine

Engine(s)
1 inboard engine
Engine(s) power
88 HP
Fuel type
Diesel
Fuel tank capacity
95.1 gal360 liters

J/160's accommodations and layout

Cockpit
Closed aft cockpit
Cabin(s)
3
Berth(s) (min./max.)
7 / 9
Head(s)
2
Freshwater tank capacity
161.1 gal610 liters
Fridge/ice-box capacity
97.7 gal370 liters
Maximum headroom
6’ 4”1.93 m
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