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Martinique 25
Designer: C. William Lapworth  ·  Builder: Mariner Construcoes Nauticas Ltda.  ·  First built: 1979
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About the Martinique 25

With limited documentation available, the Martinique 25 represents one of the lesser-known entries in the 25-foot sailboat category from the 1970s sailing boom. This modest cruiser was designed during an era when manufacturers were experimenting with affordable fiberglass construction to bring sailing to a broader market. Based on typical boats of this size and vintage, the Martinique 25 likely served as an entry-level coastal cruiser, suitable for weekend adventures and day sailing in protected waters. The design probably emphasized interior volume and basic comfort over pure performance, making it appealing to new sailors seeking their first taste of overnight cruising capability. While detailed specifications remain elusive, boats in this class typically featured simple sloop rigs, modest sail plans, and cabin layouts that maximized the available space below. The Martinique 25's relative obscurity today suggests it had a limited production run, making surviving examples increasingly rare. For prospective buyers researching vintage sailboats, the scarcity of information about this model underscores the importance of thorough hands-on inspection, as documentation and parts availability may present challenges compared to more popular designs from the same era.

Core Dimensions
LOA (Length Overall) 25.25 ft / 7.70 m
LWL (Waterline Length) 22.00 ft / 6.71 m
Beam 9.00 ft / 2.74 m
Max Draft 4.50 ft / 1.37 m
Displacement 4,500.00 lb / 2,041 kg
Ballast 2,000.00 lb / 907 kg
Sail Area (Reported) 315.00 ft² / 29.26 m²
Design & Construction
Hull Type Fin w/spade rudder
Rigging Type Masthead Sloop
Construction FG
Designer C. William Lapworth
Builder Mariner Construcoes Nauticas Ltda.
First Built 1979
Owner Reviews

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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
18.54
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
16.21
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
2.18
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. 6.29
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
3.03
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. 707.48
Rig Dimensions
I (Foretriangle Height) 33.0
J (Foretriangle Base) 11.0
P (Mainsail Luff) 28.0
E (Mainsail Foot) 9.5
SA Fore 181.5
SA Main 133.0
How It Compares

vs. Kirby 25, Mirage 25 Perry, Tanzer 25

This boat Similar boats
Dimensions
LOA
Martinique 25 ★
25.3 ft
Kirby 25
25.2 ft
Mirage 25 Perry
25.2 ft
Tanzer 25
25.3 ft
LWL
Martinique 25 ★
22.0 ft
Kirby 25
20.8 ft
Mirage 25 Perry
21.0 ft
Tanzer 25
21.8 ft
Beam
Martinique 25 ★
9.0 ft
Kirby 25
8.8 ft
Mirage 25 Perry
9.5 ft
Tanzer 25
9.6 ft
Displacement
Martinique 25 ★
4 lbs
Kirby 25
3 lbs
Mirage 25 Perry
4 lbs
Tanzer 25
4 lbs
Ballast
Martinique 25 ★
2 lbs
Kirby 25
1 lbs
Mirage 25 Perry
1 lbs
Tanzer 25
1 lbs
Sail Area
Martinique 25 ★
315 sq ft
Kirby 25
289 sq ft
Mirage 25 Perry
Tanzer 25
Performance
PHRF Rating (lower = faster)
Martinique 25 ★
Kirby 25
174 s/nm
Mirage 25 Perry
Tanzer 25
180 s/nm
SA / Displacement (higher = more powerful)
Martinique 25 ★
18.5
Kirby 25
21.6
Mirage 25 Perry
Tanzer 25
Comfort Ratio (higher = more comfortable offshore)
Martinique 25 ★
16.2
Kirby 25
12.3
Mirage 25 Perry
15.2
Tanzer 25
Capsize Screening (lower = safer)
Martinique 25 ★
2.18
Kirby 25
2.39
Mirage 25 Perry
2.32
Tanzer 25
Hull Speed
Martinique 25 ★
6.3 kts
Kirby 25
6.1 kts
Mirage 25 Perry
6.1 kts
Tanzer 25
Speed Number (higher = faster)
Martinique 25 ★
3.0
Kirby 25
3.9
Mirage 25 Perry
2.6
Tanzer 25
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