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Sailboat Specifications

Apache 45

Masthead Sloop · Catamaran Twin Cbrd.

Designed by J. R. Macalpine-Downie · Built by Sail Craft Ltd. (Uk) · First built 1970

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LOA 45.00 ft  ·  Beam 19.50 ft  ·  Displacement 14,000.00 lb  ·  Sail Area 710.00 ft²  ·  Masthead Sloop  ·  Catamaran Twin Cbrd.
About the Apache 45 Sailboat

Designed by J. R. Macalpine-Downie and built by Sail Craft Ltd. in the UK beginning in 1970, this 45-foot catamaran represents an early entry into the production multihull market. With its twin centerboard configuration and fiberglass construction, the Apache 45 was positioned as a spacious cruising platform during an era when catamarans were still gaining acceptance among recreational sailors. The boat's generous 19.5-foot beam provides exceptional interior volume and stability, while the relatively light 14,000-pound displacement contributes to good performance characteristics. Its masthead sloop rig carries 710 square feet of sail area, delivering a healthy sail area-to-displacement ratio of 19.63 that suggests spirited sailing performance typical of multihulls. The twin centerboard setup offers versatility in shallow water exploration while maintaining decent windward ability when the boards are deployed. With a theoretical hull speed of 8.58 knots, this catamaran can exceed displacement speeds more easily than comparable monohulls, making it well-suited for coastal cruising and longer passages. For sailors seeking the space and stability advantages of a catamaran from this pioneering era of multihull development, the Apache 45 represents an interesting blend of early design philosophy and practical cruising capability.

Dimensions & Specifications
LOA (Length Overall) 45.00 ft / 13.72 m
LWL (Waterline Length) 41.00 ft / 12.50 m
Beam 19.50 ft / 5.94 m
Max Draft 6.75 ft / 2.06 m
Min Draft 3.00 ft / 0.91 m
Displacement 14,000.00 lb / 6,350 kg
Sail Area (Reported) 710.00 ft² / 65.96 m²
Design & Construction
Hull Type Catamaran Twin Cbrd.
Rigging Type Masthead Sloop
Construction FG
Designer J. R. Macalpine-Downie
Builder Sail Craft Ltd. (UK)
First Built 1970
Related Sailboats Leopard 45 · Outremer 45 · Irwin 45 · Whitby 45 · Morgan 45 2
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Engine & Accommodations
KSP 0.72
Frequently Asked Questions

What is the Apache 45's sail area to displacement ratio?

The Apache 45 has a Sail Area to Displacement ratio (SA/D) of 19.63. Values between 14–18 are typical cruising sailboats; 18–22 is cruiser/racer; over 22 is performance racing.

What is the Apache 45's comfort ratio?

The Apache 45 has a Ted Brewer Comfort Ratio of 9.73. A ratio over 30 indicates good offshore comfort; over 40 is very comfortable offshore.

Is the Apache 45 safe for offshore sailing?

The Apache 45 has a Capsize Screening Formula value of 3.24. Values under 2.0 are considered acceptable for offshore sailing; under 1.8 is ideal.

How much does a Apache 45 weigh?

The Apache 45 has a displacement of 14,000.00 lb and a length overall (LOA) of 45.00 ft.

Who designed the Apache 45?

The Apache 45 was designed by J. R. Macalpine-Downie, first built in 1970.