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Hallberg Rassy 312
Designer: Christoph Rassy And Olle Enderlein  ·  Builder: Hallberg-Rassy  ·  First built: 1979
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About the Hallberg Rassy 312

Swedish craftsmanship meets thoughtful design in this well-regarded coastal cruiser from one of Scandinavia's most respected boatbuilders. Known for their robust construction and attention to detail, Hallberg-Rassy has built a reputation over decades for creating seaworthy vessels that excel in both comfort and performance. This model exemplifies the yard's philosophy of building boats that inspire confidence in challenging conditions while providing the amenities needed for extended cruising. The design reflects classic Scandinavian sensibilities with clean lines and purposeful functionality throughout. Built to handle the demanding waters of the North Sea and Baltic, these boats translate that ruggedness into exceptional capability for coastal and offshore passages worldwide. Owners consistently praise the solid feel underway and the yacht's ability to maintain composure in rough seas. The interior layout maximizes usable space while maintaining the uncluttered aesthetic typical of Northern European design. Quality hardware and thoughtful engineering details reflect the builder's commitment to longevity and reliability. For sailors seeking a well-built cruising yacht capable of serious passage-making while offering comfortable accommodations, this represents the type of proven design that has earned Hallberg-Rassy their sterling reputation among discerning cruisers.

Core Dimensions
LOA (Length Overall) 30.92 ft / 9.42 m
LWL (Waterline Length) 25.26 ft / 7.70 m
Beam 10.10 ft / 3.08 m
Max Draft 5.33 ft / 1.62 m
Displacement 10,803.00 lb / 4,900 kg
Ballast 4,850.00 lb / 2,200 kg
Sail Area (Reported) 484.40 ft² / 45.00 m²
Headroom 6.00 ft / 1.83 m
Design & Construction
Hull Type Fin with rudder on skeg
Rigging Type Masthead Sloop
Construction FG
Designer Christoph Rassy and Olle Enderlein
Builder Hallberg-Rassy
First Built 1979
Last Built 1993
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
15.91
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
28.46
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
1.83
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. 6.73
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
1.64
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. 911.59
Rig Dimensions
I (Foretriangle Height) 40.68
J (Foretriangle Base) 13.12
P (Mainsail Luff) 36.09
E (Mainsail Foot) 11.48
SA Fore 266.86
SA Main 207.16
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