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Clipper Marine 21
Designer: William Crealock  ·  Builder: Clipper Marine  ·  First built: 1971
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About the Clipper Marine 21

Built for sailors seeking an affordable entry into coastal sailing, this compact 21-footer represents the practical approach that characterized many production boats of its era. The Clipper Marine 21 strikes a balance between manageable size and seaworthy capabilities, making it particularly appealing to new sailors or those looking for a simple weekend cruiser. Despite limited available specifications, the boat's design philosophy centers on straightforward sailing without unnecessary complexity. Its modest dimensions make single-handed sailing entirely feasible, while still providing enough cockpit space for family day sailing or teaching new crew members the fundamentals. The cabin offers basic accommodations suitable for occasional overnighting, though comfort is admittedly spartan by modern standards. This sailboat excels in protected waters and near-coastal conditions, where its responsive handling and forgiving nature shine. The boat's reputation rests on reliability rather than performance, appealing to sailors who prioritize dependable operation over racing potential. For those seeking an uncomplicated introduction to sailing or a no-frills coastal cruiser, the Clipper Marine 21 delivers practical functionality in a proven package that won't overwhelm beginning sailors or strain modest budgets.

Market Price Estimate Beta
Small sample size. This estimate is based on fewer than 5 listings and may not be representative of the true market. Use with caution.
$2,050 – $2,050
typical asking price
Median $2,050  ·  3 listings used
All listings
$2,050 – $2,050 3
Rate a listing price
$
About this estimate
  • Prices are based on recent asking prices from public listings — not actual sale prices, which are typically lower.
  • Condition is not factored in. A well-maintained boat with new sails and engine can be worth significantly more than a project boat of the same model.
  • Location affects price. Boats in landlocked states or areas with fewer buyers often sell for less than those on the coast.
  • Year of manufacture is not filtered. Older examples of this model will generally be priced lower than newer ones.
  • Included equipment varies widely. A boat with a full suite of electronics, dodger, and new standing rigging may command a large premium.
  • Outliers are automatically excluded using statistical filtering to improve accuracy, but some bad data may remain.
Core Dimensions
LOA (Length Overall) 20.87 ft / 6.36 m
LWL (Waterline Length) 16.67 ft / 5.08 m
Beam 7.25 ft / 2.21 m
Max Draft 4.33 ft / 1.32 m
Min Draft 0.54 ft / 0.16 m
Displacement 1,800.00 lb / 816 kg
Ballast 410.00 lb / 186 kg
Sail Area (Reported) 192.00 ft² / 17.84 m²
Design & Construction
Hull Type Swing Keel
Rigging Type Fractional Sloop
Construction FG
Designer William Crealock
Builder Clipper Marine
First Built 1971
Last Built 1977
Owner Reviews

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Performance Ratios
PHRF Rating PHRF (Performance Handicap Racing Fleet) is a national racing handicap measured in seconds per nautical mile. Lower values indicate faster boats. Ratings are sourced from US Sailing's national database (median across 60+ regional fleets).
Under 0 — Ultralight racer0–90 — Performance racer90–150 — Cruiser/racer150–210 — Typical cruiserOver 210 — Heavy/slow cruiser
270
SA/Displacement Sail Area to Displacement ratio measures how much sail power a boat has relative to its weight. Higher values mean more performance and speed.
Under 14 — Heavy cruiser, slow14–18 — Cruising sailboat18–22 — Cruiser/racerOver 22 — Performance racer
20.81
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
11.08
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
2.39
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. 5.47
S# (Speed Number) The Speed Number (S#) is a quick performance index. Higher values indicate a faster, more powerful design relative to its size.
Under 3.0 — Slow cruiser3.0–5.0 — Average cruiser5.0–7.0 — Performance cruiserOver 7.0 — Racer
3.52
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. 431.84
Rig Dimensions
I (Foretriangle Height) 21.78
J (Foretriangle Base) 8.85
P (Mainsail Luff) 21.33
E (Mainsail Foot) 9.0
SA Fore 96.38
SA Main 95.99
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