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Sailboat Specifications

Storm 18

Fractional Sloop · Lifting Keel W/Bulb; Trans. Hung Rudder

Designed by Bob Ames · Built by Storm Marine Group (Usa) · First built 2025

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LOA 18.47 ft  ·  Beam 6.89 ft  ·  Displacement 1,322.77 lb  ·  Sail Area 196.98 ft²  ·  Fractional Sloop  ·  Lifting Keel W/Bulb; Trans. Hung Rudder
About the Storm 18 Sailboat

Bob Ames has crafted an intriguing compact cruiser with the Storm 18, a newly introduced design that maximizes sailing potential within an 18-foot package. Built by Storm Marine Group and first launched in 2025, this fractional sloop represents a fresh approach to small boat cruising with surprising capability for its size. The lifting keel with bulb configuration stands out as the boat's defining feature, allowing shallow water exploration while maintaining excellent stability when the keel is deployed. At 1,322 pounds with nearly half that weight in ballast, the Storm 18 delivers impressive stability for coastal cruising and protected water sailing. The substantial ballast-to-displacement ratio contributes to confident handling in moderate conditions. With a sail area to displacement ratio of 26.21, this design offers spirited performance without being overly aggressive, making it suitable for both novice and experienced sailors seeking a manageable yet capable small cruiser. The transom-hung rudder provides positive helm feedback while simplifying construction and maintenance. The low comfort ratio of 8.83 reflects the boat's emphasis on sailing performance over accommodations, while the capsize screening value of 2.51 indicates good stability characteristics. This fiberglass construction promises durability and straightforward maintenance, appealing to sailors wanting reliable coastal exploration in a trailerable package.

Dimensions & Specifications
LOA (Length Overall) 18.47 ft / 5.63 m
LWL (Waterline Length) 17.36 ft / 5.29 m
Beam 6.89 ft / 2.10 m
Max Draft 4.10 ft / 1.25 m
Displacement 1,322.77 lb / 600 kg
Ballast 654.77 lb / 297 kg
Sail Area (Reported) 196.98 ft² / 18.30 m²
Design & Construction
Hull Type Lifting keel w/bulb; trans. hung rudder
Rigging Type Fractional Sloop
Construction FG
Designer Bob Ames
Builder Storm Marine Group (USA)
First Built 2025
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Frequently Asked Questions

What is the Storm 18's sail area to displacement ratio?

The Storm 18 has a Sail Area to Displacement ratio (SA/D) of 26.21. Values between 14–18 are typical cruising sailboats; 18–22 is cruiser/racer; over 22 is performance racing.

What is the Storm 18's comfort ratio?

The Storm 18 has a Ted Brewer Comfort Ratio of 8.83. A ratio over 30 indicates good offshore comfort; over 40 is very comfortable offshore.

Is the Storm 18 safe for offshore sailing?

The Storm 18 has a Capsize Screening Formula value of 2.51. Values under 2.0 are considered acceptable for offshore sailing; under 1.8 is ideal.

What is the hull speed of the Storm 18?

The theoretical hull speed of the Storm 18 is 5.58 kn knots, calculated from its waterline length.

How much does a Storm 18 weigh?

The Storm 18 has a displacement of 1,322.77 lb and a length overall (LOA) of 18.47 ft.

Who designed the Storm 18?

The Storm 18 was designed by Bob Ames, first built in 2025.