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Mariner 33 Cherubini
Designer: John Cherubini  ·  Builder: Mariner Yachts  ·  First built: 1982
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About the Mariner 33 Cherubini

Built by Cherubini Boat Company during the 1970s and early 1980s, this 33-footer represents a thoughtful approach to coastal cruising design from an era when builders prioritized seaworthiness over sheer performance. The Mariner 33 emerged from John Cherubini's philosophy of creating sturdy, traditional sailboats capable of handling diverse sailing conditions with confidence. The design emphasizes practicality and comfort for extended cruising, featuring a moderate displacement hull that strikes a reasonable balance between sailing performance and interior volume. Her construction reflects the solid fiberglass building techniques of the period, creating a boat known for durability rather than racing credentials. While not designed as a performance-oriented vessel, the Mariner 33 offers respectable sailing characteristics for coastal exploration and weekend cruising. The boat's reputation centers on reliability and seaworthiness, making her particularly appealing to sailors seeking a dependable platform for Great Lakes sailing, coastal cruising, or as a stepping stone into blue water sailing. Cherubini's attention to traditional sailing boat proportions is evident throughout the design, creating a vessel that prioritizes sailing comfort and safety over speed. Today, these boats maintain a loyal following among sailors who appreciate classic design values and proven offshore capabilities.

Core Dimensions
LOA (Length Overall) 33.50 ft / 10.21 m
LWL (Waterline Length) 27.00 ft / 8.23 m
Beam 10.58 ft / 3.22 m
Max Draft 5.67 ft / 1.73 m
Displacement 9,300.00 lb / 4,218 kg
Ballast 4,100.00 lb / 1,860 kg
Design & Construction
Hull Type Fin Keel
Rigging Type Masthead Sloop
Construction FG
Designer John Cherubini
Builder Mariner Yachts
First Built 1982
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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
21.45
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
2.02
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. 6.96
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. 1.0
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