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Coronado 15
Designer: Frank Butler  ·  Builder: Catalina Yachts (Usa)  ·  First built: 1968
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About the Coronado 15

Designed by Frank Butler and built by Catalina Yachts starting in 1968, this popular centerboard dinghy became a cornerstone of small boat sailing in America. With 3,800 hulls produced over its production run, the Coronado 15 established itself as an accessible entry point into sailing while remaining capable enough for experienced sailors. The boat's fractional sloop rig and generous sail area of 139 square feet provide spirited performance despite its modest 385-pound displacement. At just over 15 feet in length with a nearly 6-foot beam, it offers surprising stability and cockpit space for day sailing and sailing instruction. The centerboard configuration allows for easy launching from beaches and shallow water exploration while providing good upwind performance when the board is deployed. Built with fiberglass construction, these boats have proven durable and low-maintenance over the decades. The design excels in protected waters, small lakes, and coastal day sailing where its responsive handling and forgiving nature shine. Many sailing programs have used the Coronado 15 for instruction due to its predictable behavior and manageable size. While not intended for overnight cruising or rough offshore conditions, it delivers pure sailing enjoyment for recreational sailors seeking an uncomplicated yet rewarding experience on the water.

Core Dimensions
LOA (Length Overall) 15.33 ft / 4.67 m
Beam 5.67 ft / 1.73 m
Max Draft 3.67 ft / 1.12 m
Min Draft 0.33 ft / 0.10 m
Displacement 385.00 lb / 175 kg
Sail Area (Reported) 139.00 ft² / 12.91 m²
Design & Construction
Hull Type Centerboard Dinghy
Rigging Type Fractional Sloop
Construction FG
Designer Frank Butler
Builder Catalina Yachts (USA)
First Built 1968
Number Built 3800
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Performance Ratios
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
42.07
Displacement/Length Displacement to Length ratio measures how heavy a boat is relative to its waterline length. Lower values mean a lighter, faster boat.
Under 100 — Ultralight racer100–200 — Light cruiser/racer200–300 — Moderate cruiser300–400 — Heavy cruiserOver 400 — Very heavy
77.68
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
4.27
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. 4.84 kn
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. 1.58 pounds/inch
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