Home/ Boats/ North Castle Marine/ North Castle 30
Sailboat Specifications

North Castle 30

Fractional Sloop · Fin W/Spade Rudder

Designed by Bruce Kirby · Built by North Castle Marine · First built 1986

+ Add to Compare
LOA 30.00 ft  ·  Beam 10.00 ft  ·  Displacement 7,700.00 lb  ·  Sail Area 530.00 ft²  ·  Fractional Sloop  ·  Fin W/Spade Rudder
About the North Castle 30 Sailboat

Relatively little documentation has survived about the North Castle 30, making it one of the more elusive designs for researchers digging into production sailboat history. What the name suggests, however, is a 30-foot vessel likely aimed at the recreational cruising and coastal sailing market that flourished during the boom years of fiberglass boat building. Boats of this size and era were typically designed with weekend sailors and club racers in mind, offering a balance between comfortable accommodations for short passages and enough performance to remain engaging on the water. Without a robust set of specifications to draw from, prospective buyers or enthusiasts researching the North Castle 30 would be well advised to seek out surviving examples and inspect them directly, paying close attention to hull condition, keel attachment, and the integrity of any original hardware. Connecting with sailing forums or regional yacht clubs may help surface owners with firsthand knowledge of how the boat handles and what quirks or strengths it has revealed over time. Hands-on research remains the most reliable path when documentation is scarce.

Dimensions & Specifications
LOA (Length Overall) 30.00 ft / 9.14 m
LWL (Waterline Length) 24.84 ft / 7.57 m
Beam 10.00 ft / 3.05 m
Max Draft 5.40 ft / 1.65 m
Displacement 7,700.00 lb / 3,493 kg
Sail Area (Reported) 530.00 ft² / 49.24 m²
Design & Construction
Hull Type Fin w/spade rudder
Rigging Type Fractional Sloop
Construction FG
Designer Bruce Kirby
Builder North Castle Marine
First Built 1986
Related Sailboats J/30 · Capri 30 Catalina · Cs 30 · Moore 30 · Newport 30 3
Owner Reviews

No owner reviews yet — be the first to share your experience with this boat.

Frequently Asked Questions

What is the North Castle 30's sail area to displacement ratio?

The North Castle 30 has a Sail Area to Displacement ratio (SA/D) of 21.82. Values between 14–18 are typical cruising sailboats; 18–22 is cruiser/racer; over 22 is performance racing.

What is the North Castle 30's comfort ratio?

The North Castle 30 has a Ted Brewer Comfort Ratio of 21. A ratio over 30 indicates good offshore comfort; over 40 is very comfortable offshore.

Is the North Castle 30 safe for offshore sailing?

The North Castle 30 has a Capsize Screening Formula value of 2.03. Values under 2.0 are considered acceptable for offshore sailing; under 1.8 is ideal.

What is the hull speed of the North Castle 30?

The theoretical hull speed of the North Castle 30 is 6.68 knots, calculated from its waterline length.

How much does a North Castle 30 weigh?

The North Castle 30 has a displacement of 7,700.00 lb and a length overall (LOA) of 30.00 ft.

Who designed the North Castle 30?

The North Castle 30 was designed by Bruce Kirby, first built in 1986.