Click on the image to go to the Monsun exterior gallery

Denna sida på svenska

A total of 904 hulls of the Monsun was built during 1974 - 1982.

The Monsun is the best seller of all time by Hallberg-Rassy with no less than 904 yachts delivered to all over the world. Scandinavia and Germany were the most frequent markets. She is a no-nonsense sturdy long distance sailor that has never been modern and will never go out of fashion. It is in fact not very surprising that the first GRP boat in a museum was a Hallberg-Rassy Monsun 31.

The Swedish sailor Kurt Björklund's HR 31 Monsun "Golden Lady" has after three and a half circumnavigations been retired into a museum. The Swedish sailor Kurt Björklund´s HR 31 Monsun "Golden Lady" has become an important attraction at a museum in Råå in southern Sweden. We at Hallberg-Rassy are of course very proud of this. Kurt Björklund is the first owner and took delivery of this boat here in Ellös 1974. Kurt knew that he wanted to do some serious sailing, but could never have imagined how far he would travel. In 1983 Kurt retired from work and went on his first solo circumnavigation. The second one included the rounding of Cape Horn.

There has never been made any special strengthening of Kurt's boat to coop with harsh weather conditions during the three and a half trips around the world. Kurt built a hard top to have an even better protected cockpit.

Kurt donated the boat to the Råå Museum. - I could have sold the boat for some SEK 300 000 But I could not stand the idea of not knowing where the boat was and how she was doing. I prefer scarifying the money and have peace in my mind, Kurt said.
Kurt lived between 1921 and 2006. In 1996 Kurt went ashore and gave up sailing. The reason was his health condition. He bought himself a small garden cottage, where he can watch the yachts sailing by. Do not even think for a moment that Kurt was interested in cultivating vegetables.


Hallberg-Rassy 31 Monsun


Olle Enderlein

Hull length

9.36 m / 30' 9"

Length water line

7.50 m / 24'  8"


2.87 m / 9' 5"

Draft, empty load

1.40 m / 4' 7"

Displacement, empty standard boat

4 200 kg / 9 250 lbs

Keel weight

1 900 kg / 4 200 lbs

Sail area with jib

39 m² / 430 sq ft


Volvo Penta MD 11 C

kW / HP

17 / 23

Diesel tank

120 litres / 32 US gallon

Water tank

160 litres / 43 US gallon

Transport height without windscreen

3.17 m / 10' 5"

Transport height with windscreen

3.54 m / 11' 7"

Sail plan


Interior drawing and photos

Sketch winter cradle

Original colour brochure, PDF, 2 MB

Danish Monsun club


(From September 1977)


Galssfibre reinforced plastic (GRP).
Colour : White, Jotun 200
Bottom treated with antifouling
Fuel tank and floor moulded in GRP.
Ballast keel, iron, moulded in and completely protected in GRP. Main bulkheads laminated to the hull on both sides.
Rudder blade in GRP. Rudder main piece 35mm bronze. Heavy cast rudder fittings in bronze.
Hull and deck, with rudder and chain plates etc, are built under the supervision of Lloyd's for "Hull moulding certificate".

Deck and superstructure

GRP-sandwich construction with polyvinyl cellular plastic as core material for strength and insulation.
Colour: Ivory white, Jotun 332
Hull and deck completely joined by overlapping GRP laminate. Bulwark formed in the deck and hull mouldings and fitted with a solid capping in teak.
Handrails, Cappings on cockpit coamings, Companionway, Hatchguides, Sole and Seats in cockpit are all in solid teak. All teak except sole and seats are varnished.
The deck has a moulded in non-skid surface and is provided with four 1" scuppers draining below water line to avoid discolored topsides. Two 11/2" scuppers from the watertight and self draining cockpit.

Spars and rigging

Mast and boom in anodized light alloy profiles 178/115 and 137/100.
The mast is stepped on the cabin top directly over strengthened bulkhead.
Through mast roller reefing gear.
Boom vang.
Internal halyards.
Two halyard winches.
Deck light in mast.
Main sheet, 4 part with clam cleat.
Roller car on X-track.
Jib sheet, braided terylene.
Two adjustable track cars including Genoa blocks.
Head stay, top shrouds, double lower shrouds and aft stay in 6mm 1x19" stainless steel rigging wire, pressed end terminals and 7x16" stainless turnbuckles.
Jib and main halyards 4mm stainless wire.
Stainless chain plates.


First class workmanship in dacron or equivalent.
Main sail: 19m² (210 sq ft) 280gr/m²
Working jib 18m² (200sq ft) 280gr/m²
Also available:
Genoa jib 31m² (340 sq ft) 250gr/m²
Storm jib 12 m² (130 sq ft) 280gr/m²
Heavy Genoa 24m² (260 sq ft) 280gr/m²
Spinnaker 71 m² (780 sq ft) 50gr/m²
All sails are delivered with bags and eventual battens.


Sheet winches, two Lewmar 40 or equivalent.
Two winch handles, 10"
Four 10" mooring cleats, two 8" mooring cleats
Pulpits, bow and stern, in stainless steel.
Double lifelines with four pairs of tapered stanchions, height 610mm.
Windscreens with heat treated glass in light alloy frames protect the forward part of the cockpit. A canvas canopy with transparent sides on the windscreen. Six windows of heat treated glass in light alloy frames, two of the windows are opening. Light alloy fore hatch with translucent acrylic glass panel and heavy framing, type Gebo or equal.
Compass: Sestrel Minor, Ritchie SF-60 or equivalent.
Permanent mounted bilge pump, type Whale Gusher 10.
Anchor of light weight type (12 kg / 27 lbs). One anchor line 30m (100 ft) and 4m chain (12 ft).
Four mooring lines 10m.
Boat hook, flagstaff.
International navigation lights.
Four 6" fenders.
Cockpit table.
Bathing ladder on transom.


Volvo Penta Diesel MD 11 C, 23 hp / 17 kW
Reverse gear type mono shift with reduction 1,19:1
12V electrical system with 35 amp. alternator.
Two batteries 60 Ah with separate circuits for engine starting and lighting etc.
Instruments comprise revolution counter. Temp. gauge and optic and acoustic warning.
Propeller 3-blade, dia 15", pitch 12" left hand. (Two blade also available)
Propeller shaft 25mm stainless steel.
Engine and shaft carefully aligned and rubber suspended. The engine foundation is made in GRP and forms a spill tray under the engine. The engine compartment is sound insulated for lowest possible sound level. Shaft bearing cutlass water lubricated rubber bearing. "Wet" exhaust line in rubber with Volvo special muffler. Built in fuel tank 120 litres (32 US gallon) with separate pump for draining of eventual water.


First class workmanship in selected mahogany, hand rubbed and treated to a silk smooth finish.
The accommodation consists from forward:
Water and gastight stowage for anchor and lines and also for eventual liquid gas bottles accessible from deck. The space is drained overboard.
Forward stateroom with two comfortable berths. Length 2.0m (6' 7"). Filler between berths gives 0.8m width at shoulder. Below the berths is the water tank and storage. The inside of the hull is lined with mahogany. Shelves at sides.
A folding door separates the forward stateroom from the toilet compartment.
The toilet compartment is fitted with a reliable marine pump toilet and sliding wash basin with freshwater from foot pump. On starboard side is a good sized open hanging locker and space for eventual heater. The walls are covered with light color linen texture vinyl. Teak grating on drained floor. Head room 1.75m (5' 9").
Sliding door to main cabin.
The main cabin is built with fair sized sofa-berths on both sides. The port side sofa is made as a L-sofa. Behind the swing up backrests is stowage for bedding. Length of berths 2.0m (6' 7"). Shelves and lockers outside the sofas. The lowering table together with the L-sofa forms a double berth. The inside of the hull above berths is paneled with mahogany. The ceiling is lined with somvyl. The glassfibre floor is covered with wall to wall carpet. The cushions are all in heavy polyeter foam, 4" thickness. The upholstery in high quality furniture fabrics.
Aft in main cabin is on starboard side navigators table with chart locker, drawers and el.panel. A quarter berth is arranged aft of the navigators table and is used also as the navigators seat. A hanging space for oilskins is arranged against the engine bulkhead.
On port side is a L-shaped galley with stainless sink and foot operated fresh water pump. The galley is fitted with a stainless two burner kerosene stove in gimbals. The boat is also available with a liquid gas stove with oven. Lockers for cookery etc. Insulated ice-box, capacity 70 litres. Working surfaces on countertop and navigators table in teak texture plastic laminate. Headroom in main cabin 1.83 m (6').
The cockpit is self draining but with low sill height for easy access to the accommodation. Seats and floor are covered with teak gratings. Length of cockpit: 2.0m (6' 7"). Stowage in aft peak and port quarter is assessable from cockpit. Main sheet and compass on low beam.

The address and fax/phone number to Hallberg-Rassy

(C) Hallberg-Rassy Varvs AB, - online since 1996 -