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Sailboat Specifications

J-125

Sloop · Monohull

Designed by Rod Johnstone · Built by J/Boats · First built 1997

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LOA 41.0  ·  Beam 10.67  ·  Displacement 8350  ·  Sail Area 772  ·  Sloop  ·  Monohull
About the J-125 Sailboat

Fast, light offshore racer with minimal accommodations, designed for serious cruiser-racers. High ballast ratio and modern fin keel deliver excellent performance.

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Dimensions & Specifications
LOA (Length Overall) 41.0
LWL (Waterline Length) 37.0
Beam 10.67
Max Draft 8.0
Displacement 8350
Ballast 4645
Sail Area (Reported) 772
Design & Construction
Hull Type Monohull
Rigging Type Sloop
Construction Fiberglass
Designer Rod Johnstone
Builder J/Boats
First Built 1997
Last Built 2003
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Engine & Accommodations
Fuel Capacity 76
Frequently Asked Questions

What is the J-125's sail area to displacement ratio?

The J-125 has a Sail Area to Displacement ratio (SA/D) of 30.01. Values between 14–18 are typical cruising sailboats; 18–22 is cruiser/racer; over 22 is performance racing.

What is the J-125's comfort ratio?

The J-125 has a Ted Brewer Comfort Ratio of 14.33. A ratio over 30 indicates good offshore comfort; over 40 is very comfortable offshore.

Is the J-125 safe for offshore sailing?

The J-125 has a Capsize Screening Formula value of 2.1. Values under 2.0 are considered acceptable for offshore sailing; under 1.8 is ideal.

What is the hull speed of the J-125?

The theoretical hull speed of the J-125 is 8.15 knots, calculated from its waterline length.

How much does a J-125 weigh?

The J-125 has a displacement of 8350 and a length overall (LOA) of 41.0.

Who designed the J-125?

The J-125 was designed by Rod Johnstone, first built in 1997.