The Hallberg-Rassy Monsun 31, designed by Olle Enderlein and produced from 1974 to 1982, is a celebrated Swedish cruising sailboat renowned for its robust construction and timeless design. As Hallberg-Rassy’s all-time bestseller, with 904 units built, the Monsun 31 features a full keel and keel-hung rudder, providing excellent stability and seaworthiness. Its fiberglass hull and mahogany interior reflect the high-quality craftsmanship associated with Hallberg-Rassy yachts. The vessel’s distinctive fixed windscreen, a hallmark of the brand, offers protection in the cockpit, enhancing comfort during extended voyages. The Monsun 31 is well-suited for long-distance cruising, as exemplified by Swedish sailor Kurt Björklund, who completed three and a half circumnavigations aboard his Monsun 31, GOLDEN LADY.
In addition to its proven bluewater capabilities, the Hallberg-Rassy Monsun 31 is admired for its balanced sailing performance and ease of handling. The sail plan is modest yet efficient, allowing for steady progress even in heavy weather. Below deck, the layout is practical and cozy, offering five berths, a galley, a chart table, and a head—making it surprisingly spacious for a 31-foot vessel. Its classic lines and traditional aesthetic continue to attract sailors who value durability and simplicity.
Name of vessel | NARWHAL |
Model | Monsun 31 |
Year | 1975 |
Builder | Hallberg-Rassy |
Designer | Olle Enderlein |
Price | $37,000 USD |
Location | Seattle |
Length (feet) | 30 |
Beam (feet) | 9.4 |
Draft (feet) | 4.6 |
Displacement (pounds) | 9250 |
Ballast (pounds) | 4200 |
Engine model | Volvo MD11C |
Engine horsepower | 23 |
Engine hours | |
Fuel tank capacity (gallons) | 32 |
Water tank capacity (gallons) | 43 |
Holding tank capacity (gallons) |
NARWHAL is a beautifully maintained and upgraded version and was fresh water kept until 2015.
Preliminary specifications – more details to follow. This vessel is shown by appointment.
Upgrades include:
New house batteries (2024)
New Ballard Sails mainsail with full battens and two reef points (2024)
Hydraulic steering ram rebuilt (2023)
Jabsco head replaced (2021)
Schattauer Sails cruising headsail (2008)
Achilles Hypalon 8’ inflatable (2004)
Bulkhead mounted kerosine cabin heater with stack robber and internal fan, 4 gallon kerosene tank in aft lazarette (2001)
Custom dodger and mainsail cover
Furuno Navnet chart plotter, depth sounder, radar with mast mounted antenna (2002)
New thru hull transducer for depth, temp, and speed
Robertson AP21 hydraulic autopilot with handheld remote
New Selden boom with internal single line reefing
Tides Marine Strong Track low friction mainsail track with stainless cars
Easy jack system for mainsail