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Mariner 19 Cb
Designer: Philip Rhodes  ·  Builder: Stuart Marine; O'day  ·  First built: 1962
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About the Mariner 19 Cb

With limited documentation available, the Mariner 19 Cb represents an intriguing piece of sailing history that deserves recognition among small boat enthusiasts. The "Cb" designation indicates this model featured a centerboard configuration, making it particularly well-suited for shallow water sailing and easier trailering compared to fixed-keel alternatives. Built during an era when quality fiberglass construction was becoming the standard, this compact sailboat likely appealed to sailors seeking an accessible entry point into the sport or those wanting a manageable day sailor for protected waters. The centerboard design would have provided excellent versatility, allowing adventurous sailors to explore shallow bays, creeks, and coastal areas that deeper-draft boats couldn't access. Small boats of this vintage typically emphasized simplicity and functionality over luxury appointments, making them ideal for learning seamanship fundamentals or enjoying relaxed afternoon sails. The Mariner 19 Cb probably offered responsive handling characteristics that would build confidence in new sailors while still providing enough performance to keep experienced sailors engaged. Though detailed specifications remain elusive, boats of this size and era generally represented solid value propositions for recreational sailors seeking reliable, unpretentious sailing experiences in coastal and inland waters.

Core Dimensions
LOA (Length Overall) 19.16 ft / 5.84 m
LWL (Waterline Length) 17.75 ft / 5.41 m
Beam 7.00 ft / 2.13 m
Max Draft 4.92 ft / 1.50 m
Min Draft 0.83 ft / 0.25 m
Displacement 1,430.00 lb / 649 kg
Sail Area (Reported) 184.00 ft² / 17.09 m²
Design & Construction
Hull Type Centerboard (Trunk)
Rigging Type Fractional Sloop
Construction FG
Designer Philip Rhodes
Builder Stuart Marine; O'day
First Built 1962
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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
23.24
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
9.1
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
2.49
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. 5.65
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
4.91
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. 443.96
Rig Dimensions
I (Foretriangle Height) 20.0
J (Foretriangle Base) 6.9
P (Mainsail Luff) 23.0
E (Mainsail Foot) 10.0
SA Fore 69.0
SA Main 115.0
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