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Invader 22
Designer: Feltham/Walsh And Wakefield  ·  Builder: Thames Marine  ·  First built: 1975
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About the Invader 22

With limited documentation available, the Invader 22 represents one of those intriguing smaller sailboats that populated marina slips during sailing's growth years. This 22-foot vessel falls squarely into the trailer-sailer category, designed for sailors seeking an accessible entry point into the sport or a manageable weekend cruiser. Based on typical boats of this size and era, the Invader 22 likely served dual purposes as both a day-sailer and light cruising vessel. Her compact dimensions would have made her well-suited for protected waters, coastal sailing, and smaller inland lakes where maneuverability and ease of handling take precedence over offshore capabilities. The boat's name suggests a builder's confidence in performance, though without extensive documentation, her racing pedigree remains unclear. What can be inferred is that boats of this size typically featured simple sail plans optimized for single-handed or small-crew sailing, making them attractive to families and novice sailors. Like many vessels in this size range, the Invader 22 probably offered basic accommodations suitable for weekend adventures rather than extended cruising. Her trailer-friendly design would have appealed to sailors wanting the flexibility to explore different sailing venues without marina commitments.

Core Dimensions
LOA (Length Overall) 22.00 ft / 6.71 m
LWL (Waterline Length) 19.00 ft / 5.79 m
Beam 8.00 ft / 2.44 m
Max Draft 2.00 ft / 0.61 m
Displacement 2,000.00 lb / 907 kg
Design & Construction
Hull Type Fin Keel
Rigging Type Masthead Sloop
Construction FG
Designer Feltham/Walsh and Wakefield
Builder Thames Marine
First Built 1975
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Performance Ratios
Comfort Ratio Ted Brewer's Comfort Ratio predicts how comfortable a boat will feel in offshore conditions. Higher values mean a steadier, more comfortable motion in a seaway.
Under 20 — Uncomfortably rough20–30 — Acceptable coastal30–40 — Good offshore comfortOver 40 — Very comfortable offshore
9.73
Capsize Screening Formula The USHS Capsize Screening Formula estimates offshore capsize risk. Lower is safer — values under 2.0 are considered acceptable for offshore sailing.
Under 2.0 — Safe for offshore2.0–2.2 — Borderline offshoreOver 2.2 — Coastal use recommended
2.54
Hull Speed Hull Speed is the theoretical maximum speed of a displacement hull, calculated from waterline length. Most cruising sailboats reach this speed in moderate conditions. 5.84
Pounds/Inch Immersion Pounds per Inch Immersion (PPI) tells you how much weight is needed to sink the boat one inch. Useful for calculating how additional gear and stores affect waterline. 543.11
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