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Sirena 40
Designer: Dave Pedrick  ·  Builder: Sirena Yachts/Lito Marin  ·  First built: 1987
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About the Sirena 40

Produced by the Turkish builder Sirena Marine, the Sirena 40 is a modern bluewater cruiser designed to appeal to sailors seeking a refined balance of comfort and performance. Built with quality construction standards and a contemporary hull form, this vessel carries the hallmarks of a well-finished production cruiser intended for extended passages as well as relaxed coastal sailing. Sirena Marine has built a reputation for producing boats with generous interior volume, thoughtful ergonomics, and a high level of standard equipment, and the 40 reflects that philosophy. The cockpit layout and deck design are typically oriented toward ease of handling, making the boat accessible to short-handed crews without sacrificing the capability needed for offshore work. Her lines suggest a hull optimized for steady, comfortable passage-making rather than outright racing performance. For buyers considering a capable cruising yacht that can handle both weekend coastal sailing and longer bluewater adventures, the Sirena 40 represents a compelling option from a builder with growing recognition in the European and global sailing market. Prospective buyers are encouraged to arrange a sea trial to fully assess her sailing character firsthand.

Core Dimensions
LOA (Length Overall) 40.03 ft / 12.20 m
LWL (Waterline Length) 31.17 ft / 9.50 m
Beam 12.30 ft / 3.75 m
Max Draft 6.89 ft / 2.10 m
Displacement 18,078.00 lb / 8,200 kg
Ballast 7,937.00 lb / 3,600 kg
Sail Area (Reported) 843.00 ft² / 78.32 m²
Design & Construction
Hull Type Fin w/spade rudder
Rigging Type Fractional Sloop
Construction FG
Designer Dave Pedrick
Builder Sirena Yachts/Lito Marin
First Built 1987
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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
19.66
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
29.2
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
1.88
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. 7.48
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
2.25
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
Rig Dimensions
I (Foretriangle Height) 56.33
J (Foretriangle Base) 16.31
P (Mainsail Luff) 50.8
E (Mainsail Foot) 15.09
SA Fore 459.37
SA Main 383.29
How It Compares

vs. Farr 1220, Imx 40, Santa Cruz 40

This boat Similar boats
Dimensions
LOA
Sirena 40 ★
40.0 ft
Farr 1220
40.0 ft
Imx 40
Santa Cruz 40
40.0 ft
LWL
Sirena 40 ★
31.2 ft
Farr 1220
33.6 ft
Imx 40
34.4 ft
Santa Cruz 40
36.0 ft
Beam
Sirena 40 ★
12.3 ft
Farr 1220
12.5 ft
Imx 40
12.5 ft
Santa Cruz 40
12.0 ft
Displacement
Sirena 40 ★
18 lbs
Farr 1220
13 lbs
Imx 40
15 lbs
Santa Cruz 40
10 lbs
Ballast
Sirena 40 ★
7 lbs
Farr 1220
5 lbs
Imx 40
5 lbs
Santa Cruz 40
5 lbs
Sail Area
Sirena 40 ★
843 sq ft
Farr 1220
Imx 40
951 sq ft
Santa Cruz 40
734 sq ft
Performance
PHRF Rating (lower = faster)
Sirena 40 ★
Farr 1220
81 s/nm
Imx 40
Santa Cruz 40
48 s/nm
SA / Displacement (higher = more powerful)
Sirena 40 ★
19.7
Farr 1220
Imx 40
25.1
Santa Cruz 40
24.6
Comfort Ratio (higher = more comfortable offshore)
Sirena 40 ★
29.2
Farr 1220
Imx 40
Santa Cruz 40
15.9
Capsize Screening (lower = safer)
Sirena 40 ★
1.88
Farr 1220
Imx 40
2.02
Santa Cruz 40
2.20
Hull Speed
Sirena 40 ★
7.5 kts
Farr 1220
Imx 40
7.9 kts
Santa Cruz 40
8.0 kts
Speed Number (higher = faster)
Sirena 40 ★
2.3
Farr 1220
Imx 40
3.8
Santa Cruz 40
5.4
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