Description

The 1973 Hallberg-Rassy Monsun 31 is a true classic of Scandinavian yacht design, celebrated for its strength, seaworthiness, and timeless appeal. Designed by Olle Enderlein, the Monsun 31 was conceived as a serious offshore cruising yacht, and its reputation has only grown over the decades.

Built during Hallberg-Rassy’s formative years, the Monsun 31 benefits from exceptionally solid GRP construction, a deep, well-protected cockpit, and a strong encapsulated keel that inspires confidence in heavy weather. The boat’s moderate displacement and long keel deliver a comfortable, predictable motion at sea, making her particularly well suited to extended cruising and passagemaking.

Below deck, the Monsun 31 offers a warm, traditional interior with beautifully crafted mahogany joinery, excellent storage, and a practical layout that works just as well for weekends as it does for longer adventures. Despite her age, the design feels purposeful rather than dated, prioritising safety, comfort, and reliability above all else.

What truly sets the Monsun 31 apart is her proven pedigree. Many examples have crossed oceans and circumnavigated, a testament to the design’s integrity and capability. For sailors seeking a dependable, characterful yacht with genuine blue-water credentials, the Hallberg-Rassy Monsun 31 remains a compelling and highly respected choice.

Mechanical

Volvo MD 11C 
17HP
Shaft Drive
Last Serviced - February 2026

 

Electrical

2 x 12v Batteries
2 x Solar panels with voltage regulator
Shorepower lead to 3 pin socket
Alternator charging

 

Navigation

Chartplotter - Garmin Echomap
GPS - Matsutec
DSC/VHF - Cobra
Handheld VHF - Cobra HH150

Speed - Nasa Target 2
Autopilot - Simrad
Compass

 

Sails, Spars and Rigging

Mast Head rig
Standing rigging - age unknown presumed to be more than 10 years
Slab reefing main with lazy jacks
Furling headsail
Mainsheet traveller in cockpit
2 x Spinnaker halliards
Rope kicker

Sails - Ages unknown
Main
Genoa
Spinnaker

 

Interior & Domestic

6 berths in 1 cabin plus saloon
1 x heads with pull out sink
Cold pressurised water plus footpump backup
Radiator heater system - untested
Galley with Oven grill and 2 ring burner
Sink
Wetlocker in heads
Fwd facing chart table
Saloon Table 

 

Deck

Tiller steering
GRP deck with Teack in cockpit
Manual anchor windlass
Anchor and chain
Spare kedge anchor
Chain locker
2 x Barient 32 ST primary winches
2 x Barient 10 spinnaker winches
2 x Lewmar mast winches

 

Safety

EPIRB - Requires servicing
Rescue Harness
Horseshoe Lifebuoy
Danbuoy
Fireblanket
Manual bilge pump

 

Canvas

Sprayhood
Cockpit enclosure
Sail cover
Tiller cover

 

Miscellaneous

Dinghy - by separate negotiation
Loads of spares and boaty bits collected over the years

 

Documentation

Evidence of 5 years Clear title - Sale and purchase agreement from 2003
SSR registration - Expired
Evidence of VAT - built pre VAT
Evidence of RCD - built pre requirements

Measurements

LOA: 9.36 m

Beam: 2.87 m

Displacement: 4200 kg

Fuel Tanks Cap.: 120 L

Fresh Water Tanks Cap.: 160 L

Specifications