1977 Hallberg-Rassy Monsun 31

Sint Maarten
$34,000 USD

Hallberg-rassy has a well-deserved reputation for producing high quality boats and Nyd (Enjoy!) has received a lot of recent upgrades to make her ready for her recently completed Atlantic crossing and Caribbean cruising. Due to unforeseen circumstances the owners are reluctantly selling their classic, well loved 1977 31ft Monsun.

The boat would make a great liveaboard for a couple or young family as she can comfortably accommodate up to 5 guests. The saloon table drops to a double and there is berth in the starboard aft. Hallberg-Rassy, has always meant good comfort combined with easy handling, and Nyd is no exception, whether island hopping or blue water cruising, her well designed full keel hull makes sailing a pleasure.

This is your opportunity to get a hugely upgraded ready to sail classic Hallberg-rassy to enjoy cruising the Caribbean islands in safety, comfort and style!

Recent upgrades Include: - New engine (Nanni N3.30) 2015 - Lithium Skanbatt 12v, 125AH battery with Bluetooth and BMS(Battery management system)- New propeller 2015 - Roller system Furlex 200S - New deck hatch 2018 - Wind pilot Ocean Pacific. New VHF Standard Horizon GX 1700e 2018 - New diesel tank of 70L 2019, - AIS Digital Yacht nomad transmits / receives class B with its own antenna and wifi / USB 2019 - Silva compass 100 B / H 2018 - NASA wind clipper wind meter 2019 - Garmin striker 4 GPS / Depth meter with new transmitter 2018 - New cooling compressor and condenser for cool box 2017 - Emergency transmitter 2019 - iPad for navigation The sail wardrobe consists of 2 genoa (one with UV protection), 2 spare main sail, a jib and cover to seal if you do not use genoa with UV cloth. All sails have been in the sailmaker for service for the last 2 years. Contact us today to find out more at info@bviyachtsales.com

Equipment: Additional Specs, Equipment and Information:

Boat Name Nyd

Specs Flag of Registry: Norway Keel: Other Hull Shape: Other

Engines Engine 1: Engine Brand: Kubota Engine Model: Nanni Diesel N3.30 Engine Type: Inboard Engine/Fuel Type: Diesel Drive Type: Direct Drive

Deck and Hull Lalizas 4 man liferaft (new 2019) tested last year by professionals Fenders Extra water tanks (4x0L), Extra diesel tanks (4x20L), Sprayhood (may need replacing soon) Deck hatch replaced 2018 Windpilot Ocean Pacific (Used, in very good condition) Windlass Rocha anchor 15kg & 50m of 8 mm chain Extra Bruce anchor 10kg 2x Boat hooks Deck Brush Dock lines 2x 110w flexible Solar panels mounted on the side Fishing wheel Lifeguard buoy 20m lifesaving rope Silva compass 100 B / H (new 2018) Tiller Rudder (needs small gel coat repair) Swim Platform NASA wind clipper for wind measure (new 2019)

Electrics and Electronics HF Standard Horizon GX 1700e (new 2018) AIS Digital Yacht nomad transmits / receives class B with external antenna and wifi / USB 2019 Garmin striker 4 GPS / Depth meter with new transmitter 2018 Epirb 2019 (Emergency position-indicating radio beacon) iPad Pro for navigation 2 x handheld VHF Lithium Skanbatt 12v, 125AH battery with Bluetooth and BMS(Battery management system) 1x 12V starter battery, new 2020 Smart charging separator Pro SplitR 2019 Battery charger for landpower Quick SBC250 NRG FR, New 2019 Regulator MPPT for solar panels 20A with Bluetooth monitor, new 2019 VHF Standard Horizon GX 1700e (new 2018)

Sails and Rigging Tasker offshore challenge mainsail with two reefs, (new 2019) Mainsail rigged with a lazybag and lazy jack system 2 Genoa (one with UV protection, one with Genoa cover) 2 spare main sails Roller furling Genoa Roller system Furlex 200S Forestay (new 2015) (All sails have been in the sailmaker for service for the last 2 years)


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German Frers
# Built
Also Known As


Length Overall
31 7 / 9.6 m
Waterline Length
101 8 / 31 m
0 0 / 0 m
4 7 / 1.4 m 0 0 / 0 m
9,920 lb / 4,500 kg
4,410 lb / 2,000 kg (Lead)

Rig and Sails

Reported Sail Area
606′² / 56.3 m²
Total Sail Area
Sail Area
Mast Height
48 11 / 14.9 m
Sail Area
Forestay Length

Auxilary Power

Volvo Penta
Fuel Type
Fuel Capacity
16 gal / 61 l
Engine Hours


Water Capacity
52 gal / 197 l
Holding Tank Capacity


Hull Speed
6.75 knots
Sail Area/Displacement
good performance
stiffer, more powerful
Comfort Ratio
coastal cruiser
Capsize Screening
better suited for coastal cruising


From BlueWaterBoats.org:

The Hallberg-Rassy 31, designed by German Frers and introduced in 1992, has been one of Hallberg-Rassy’s most popular models for many years. The yacht strikes a harmonious balance between comfort, safety and performance as a go-anywhere cruiser on the smaller end of the offshore sailing spectrum.

The yacht enjoyed positive reviews in the press upon her introduction and through the years earned praise from hers owners. Bob Perry, one of the great names in cruising design, wrote in Sailing Magazine, “Frers has given us a nice boat. I like just about everything about this design, from its high cockpit seatbacks to the fractional rig.” While closer to home, Swedish yachting magazine Båtnytt wrote, “Extremely spacious, light and inviting interior. The sailing and sea-going qualities are in a class of its own.”

Hallberg-Rassy’s change to Frers as designer has given this 31 footer a much needed boost of speed over her predecessors, for a cruiser her speed through water and close windedness is excellent in most sea conditions. However she’s known to struggle in light winds and also short choppy seas. The boat is well balanced is easy to single hand with all her control lines lead aft to the cockpit.

Under heavy conditions the boat is sea-kindly and has safe docile characteristics, as one owner put commented, “it always feels nice arriving in carpet slippers and smoking jacket rather than a drenched oily.”

The design pairs a beamy medium displacement hull with an efficient fin keel and a balanced spade rudder. Her sweeping sheerline belies a low freeboard, which helps keeps her windage low, while interior headroom is achieved by a higher cabin-top. The low freeboard arrangement also manages to keep the crew dry and well protected by use of a high cockpit wall and Hallberg-Rassy’s trademark fixed-windscreen.

The rig also continues the theme of cruising practicalities and performance. Frers has opted for a fractional rig, a configuration more often seen in racers, but is devoid of the extra hassles of running backstays to support the head of the genoa, instead relying on its masthead backstay and an aft-swept spreader to provide forestay tension control.

Belowdecks is a layout that feels light and spacious with mahogany joinery that has become a Hallberg-Rassy trademark. There are two spacious double cabins, one forward and one aft, and a large head and shower compartment aft. The saloon is of a good size and there is ample space in the galley and the chart tables is full sized. Going against the “full-sized” theme, owners comment that the berths are quite small, best suited to those under 5′ 10″ in height. The cockpit is comfortable, well protected and can accommodate a decent crew without issues. Part of the starboard seat lifts up to give access to a very generous stowage area.

All put together the Hallberg-Rassy 31 is a solid cruising yacht featuring the popular qualities of larger Hallberg-Rassys in a small package. She can cope safely in all weather conditions, practical for cruising life, and easy to sail. With an extremely long production run from 1993 to 2009, prices can vary dramatically depending on age and wear and tear.


The Hallberg-Rassy 31 continues from a very popular line of 31-footers. The Swedish yacht maker Hallberg-Rassy has alway distinguished itself for building quality yachts on the high end of the market, many noting it as the Mercedes Benz of boatbuilders.

Not long after 1972 when Harry Hallberg and Christoph Rassy merged their boatyard operations to become Hallberg-Rassy, the company’s Olle Enderlein designed Monsun 31 quickly became the company’s most popular model, in fact it sold 904 boats between 1974-1982 making it the all-time best seller. This model was complemented and eventually superseded by the 312, a more modern design by Christoph Rassy and Olle Enderlein which saw the introduction of a fin keel. The 312 was also very popular with 690 boats built between the years 1979-1993.

The Hallberg-Rassy 31 was introduced in 1992 to replace the long running 312, keeping many of her traits but with a lighter beamier hull and refinements throughout. This time the design was by German Frers who has been the exclusive designer for Hallberg-Rassy since 1989, his designs have added much needed performance to the Hallberg-Rassy lineup.

By 2006, the design was updated with a MkII version, the changes were minor, the most significant is a rig change to a lighter twin-spreader mast and an engine update, there were also many improvements to the interior furnishings. Like her forebears Hallberg-Rassy 31 enjoyed a long production run, lasting 18 years and 356 boats, before being replaced by the Hallberg-Rassy 310 in last 2009 – a slightly smaller and lighter sailboat.

Links, References and Further Reading

» The official Halberg-Rassy website, information on the Hallberg-Rasssy 31 MkI and MkII
» Bob Perry’s design review of the Hallberg-Rassy 31, first published in Sailing Magazine, 1993



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