monsun 31 sailboat

Hallberg-Rassy Monsun 31: A Timeless Sailboat for Offshore Adventures

In 1974, the esteemed Swedish boatbuilder Hallberg-Rassy launched the Monsun 31, a part of their highly praised line of cruising sailboats. The vessel was designed by the distinguished naval architect Olle Enderlein, who had previously contributed his expertise to several other successful Hallberg-Rassy models, such as the HR 35 Rasmus and the HR 42 E.

The Monsun 31 was meticulously crafted as a classic cruising sailboat. They featured a full keel, elongated overhangs, and a substantial displacement, which ensured stability in turbulent waters. Boasting a length overall (LOA) of 31 feet (9.45 meters), a beam of 9.5 feet (2.9 meters), and a draft of 4.6 feet (1.4 meters), the boat is ideally suited for extended offshore voyages. Its design incorporates a low freeboard, reducing wind resistance and enhancing stability. This and the extended waterline contribute to better performance and speed. The boat’s seaworthiness and reliability made it popular among sailors who valued comfort, safety, and traditional design.

The Monsun’s rig is designed with simplicity in mind. It features a single spreader and a furling genoa, which allows for effortless handling by a small crew. The sail area is moderate, which helps to maintain stability in forceful winds. But it’s still large enough to deliver satisfactory performance in lighter breezes.

The Monsun 31’s construction adheres to high standards, employing top-notch materials and skilled craftsmanship. Its solid fiberglass hull is hand-laid and reinforced with woven roving, ensuring its strength and durability. Similarly, the deck consists of fiberglass with a balsa core, offering both rigidity and insulation. Additionally, the boat is equipped with premium hardware and fittings, including bronze winches, stainless steel stanchions and pulpits, and teak handrails. All of these factors further attest to its quality and reliability.

The interior is spacious and comfortable. With its two-cabin layout, up to six people can be accommodated. The saloon is located amidships. It features a large table and comfortable seating, making it an ideal place to relax or dine. The boat’s galley is located on the port side. It’s well-equipped, with a stove, oven, sink, and refrigeration. The head is located between the front cabin and the saloon. In some versions, the head is located on the starboard side.

During its production run from 1974 to 1982, 904 Hallberg Rassy Monsun 31s were built. The boat quickly gained a reputation as a seaworthy and reliable cruiser. Many of the owners have taken their Monsuns on longer voyages. The Monsun has sailed worldwide and completed numerous ocean crossings. For many cruisers who value comfort, safety, and traditional design. it has become a favorite.

In the years since the Monsun 31 was first introduced, it has become a classic cruising sailboat with a loyal following of owners who appreciate its timeless design and solid construction. Many Monsun 31s remain in active use today, and the boat continues to be popular among cruisers who want a reliable, comfortable, and seaworthy vessel for exploring the world’s oceans. The Hallberg Rassy Monsun 31’s enduring popularity is a testament to its quality and the enduring appeal of traditional cruising sailboats.

Hallberg-Rassy Monsun 31 Data

Useful links.

Official Monsun 31 page Hallberg-Rassy Webshop

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A Classic Reborn: Refitting a Hallberg-Rassy 31 For Long Term Cruising

• By Greg Thomasson and Missy Hearn
• April 19, 2022

Do you ever have a feeling that your life is about to change?” My wife said these words to me as we parked our Toyota 4Runner in front of the covered warehouse containing a 31-foot Hallberg-Rassy Monsun from 1975. I didn’t know what struck Missy, but I shrugged it off. “Let’s leave our ­emotions here in the car,” I said. I was lying. For the ­previous two months, I had been admiring this boat online, asking the broker for more pictures, and digesting anything that had information about the Monsun. Even before seeing the boat in person, I had dreams of ­following along the tracks that John Neal wrote about having sailed in his Monsun, which he owned for 11 years and sailed 44,000 miles before selling it in Australia. We wanted our first keelboat to sail (with Poseidon’s blessing) from our home port on Lake Erie to the Pacific. 

At that moment, though, I had to reel back my mind to where I was standing in Michigan. I had learned from reading all the books that you have to leave your emotions out of buying a sailboat. Which, in all honesty, I think is a bunch of baloney. Why shouldn’t you fall in love with something as time-consuming, money-depleting and frustrating as an old sailboat?

Anyway, it was time to focus. I had to find a reason not to buy this boat. 

The broker unlocked the warehouse and turned on the dim, fluorescent lights. The warehouse could fit about 50 average-size sailboats, but only about 10 were left on the hard that season, all tucked back into the corner. After five minutes of searching, we found the boat. 

The hull looked and felt solid, fair and clean. At first glance, the gelcoat looked outstanding for a 45-year-old boat, and even the nonslip on deck was still in good condition. The downside was that when we went inside the cabin, there was a strong odor coming from the head and holding tank. The cushions no longer had any resilience, and the covers needed replacing. Missy and I were too infatuated with the cockpit to care. It was covered in teak, and it felt snug and secure. The interior mahogany seemed so nautical. 

And then I opened the engine bay to see the Yanmar 3YM30, outfitted to the boat in 2015 and with only 200 hours logged. The engine looked immaculate, something I wouldn’t mind working on. 

A clean engine bay was a major ­checkpoint for me. It meant that the ­previous owner had cared. Not only that, but when something broke, I would be able to hop in and fix it without later stepping into our boat’s cabin covered in grease. 

The sails still had their inspection tags from the sailmaker for their yearly service. And, being a freshwater boat, it had rigging in decent condition. 

That was it. The boat had its flaws, but we were sold. 

Making the monsun shipshape

We closed on the boat after the survey and arranged to have it shipped to our marina in Monroe, Michigan. Our project list was built on our bluewater passagemaking dreams, which we’d spun up by reading Don Casey’s This Old Boat and Inspecting the Aging Sailboat , listening to Andy Shell and crew’s 59 ° North (now called On the Wind) podcasts, clicking around John Harris’ website, morganscloud.com , and scouring our surveyor’s report. Everything we wanted to do would be in our spare time because we were working full time. On the ­weekends, we would haul our tools to the marina and work on the boat throughout winter. Our goal was to fix up the boat in two years, and then cast off the lines. 

We followed the basic principles that Schell and Harris preach: Keep the water out, keep the rig up, and keep the crew happy and healthy. We added a fourth item: Keep it small and simple. 

Keeping the water out required us to replace all the original through-hulls, which had gate valves as seacocks instead of ball valves. We also had to replace the hoses and clamps for the deck scuppers and cockpit drains. 

We went with Groco IBVF seacocks and flanged adapters, and Scandvik ABA hose clamps. Replacing the through-hulls was an intimidating project, but the most technical aspect was ensuring that the through-hull and flange were flush to the hull inside and outside. It took some time to level the inside of the hull with epoxy resin and colloidal silica filler. With lots of sanding on the inside of the hull, and patience, we were able to ensure a watertight seal once the 3M Marine Adhesive Sealant 5200 was applied. 

During the survey, we had noticed some evidence of water entering from the lower shroud plates, so another task was to remove the U-bolt-style lower shroud plates. Then we had to remove any of the core that seemed to have water intrusion. We filled it with epoxy and redrilled the original bolt holes. I went to a local machine shop and had them fabricate the backing plates out of quarter-inch 316 stainless steel. 

That mom-and-pop shop with a couple of CNC machines was able to knock out the job in no time. As a plus, they became enthusiastic followers of our journey. 

Five frustrating inches

Next we focused on keeping up the rig. The rigging was old, its age unknown. So, even though the boat was lightly used for four months out of the year and had never seen salt water, we still decided to replace the rigging. The turnbuckles were replaced the first season with BSI turnbuckles and toggles. The following season, we replaced the 1-by-19 wire, ordering the length of wire and mechanical Sta-Lok terminals online from Defender. We took the measurements of the stays in January, but we didn’t get around to cutting them until much later. We cut the backstay in May, a few days before the boat was ready to splash. 

When we stepped the mast, Missy ­informed me that the backstay wasn’t going to reach the chainplate. “Well, unscrew the turnbuckle. It will fit,” I said. 

She replied with, “It’s about 5 inches short, and the turnbuckle is on its last few threads.” 

My heart sank. We were going to have to take off the mast and wait for another order of wire to replace it. But in a pinch, we found a Dyneema strop and a soft shackle that we could use as an extender. That combination allowed us to step the mast and move the boat over to our dock slip. 

We left the rig only hand-tight and did not bend on the sails. Once the new order of 1-by-19 wire showed up, I began cutting again, checking and double-checking measurements. In front of our boat slip, I used a mini hacksaw and a homemade miter box to make a clean, perpendicular cut. 

Once the backstay was cut and ready to go, Missy went up the mast, after setting the halyard and topping lift as additional temporary backstays. To my disbelief, once again, the backstay was short. 

“What the heck!” I yelled in frustration. 

“How is this so off?” Missy asked with undertones of blame. 

Both times, I had cut the backstay 5 inches short. I finally figured out that I was failing to account for the difference in swage and Sta-Lok length (about 2½ inches on each end). I learned that, when measuring stays, it is important to make a simple sketch or note stating exactly where the measurement started and ended, even if you are freezing your butt off while taking the measurements in Michigan in January. 

The third time, Missy came up with a plan to ensure that the length would be correct. I would first attach the Sta-Lok fitting to only one end, and Missy would go aloft and connect the fitting to the masthead. Then I would cut the backstay to the correct length by visually checking it. 

Finally, we had a backstay. With this setback, the rest of the rigging waited until we were on our way along the Erie Canal. The remaining shrouds were cut with the mast down, on the free dock in Waterford, New York. 

Getting comfortable

The most daunting and time-consuming of the tasks was keeping the crew happy and healthy. To us, this meant staying well-rested and well-fed, and living in a clean environment. Our boat had been a Great Lakes vacation cruiser. Used lightly and only for the summer season, it wasn’t outfitted for full-time living aboard. 

Since we would spend every day sitting and sleeping on the boat, we decided to replace the cushions and covers. We ­transformed one bedroom of our ­two-bedroom apartment into our canvas loft, and another room into boat-parts storage. This meant that our bed would have to be relocated to the living room, which we figured would be good practice for living in a small space. Missy measured all the cushions, including the V-berth, and came up with a quantity of foam, Sunbrella, underlining fabric and zipper length. Before ordering, we tried Sailrite’s foam sample box to find the perfect foam firmness. We placed the 6-by-6-inch foam samples on the ground, testing each to see what worked best for us—which would have been a funny sight to see, trying to test a cushion with our butts halfway on and halfway off the tiny samples. 

Missy then cut out the cushions using an electric knife, the kind regularly brought out for Thanksgiving turkey. All of the cushions required curved edges along the hull, which required Missy to make two measurement lines (top and bottom), and then cut the cushions at an angle. To make this complicated cut, I would sit under the cushion and guide one side of the blade to make sure it was still on the cut line. The cushion edges were not perfect, but, by oversizing the cushion slightly and using Sailrite’s plastic-shrink method, the small imperfections were no longer noticeable. 

The cushion covers were sized and sewn to the same dimensions as the original Hallberg-Rassy. This resulted in a skintight fitting. Missy decided to modify the settee cushions, changing them from a single 6-foot-long cushion to separate cushions that matched the stowage underneath. This greatly improved our access to cans of beans and tuna below the settees. Missy also cut the fabric-wrapped backrests in half so that we wouldn’t have to clear off an entire side of the salon to access underneath. 

I had learned from reading all the books that you have to leave your emotions out of buying a sailboat. Which, in all honesty, I think is a bunch of baloney. Why shouldn’t you fall in love with something as time-consuming, money-depleting and frustrating as an old sailboat?

And finally, to keep us snuggly in our bunks underway, Missy sewed some lee cloths out of Phifertex and binding, with pockets for quick storage of a headlamp, headphones, a book or a cellphone. She used webbing and buckles to allow for quick tensioning, and ease of ingress and egress. Every time I come in to rest on our boat, I still marvel at how amazing the cushions look and feel. 

Getting even more comfortable

When we first received our boat, it came with an Origo two-burner stove. We kept the alcohol stovetop for the first summer, but it became obvious within the first two weekends that it was not for us. I immediately grew tired of refilling the alcohol, which always seemed to be empty in the morning when we wanted to make coffee. The following winter, I replaced the Origo with a Force 10 two-burner ­propane stove and oven. It’s a major ­luxury to be able to light the stovetop without a lighter or match, and without fumbling around the cockpit locker to find the denatured alcohol. 

Then there is the added benefit of ­oven-baked fresh bread, which my wife said was a requirement for our new lifestyle. Since beginning cruising, she has made bread on the Hudson River approaching New York City, while underway in the Atlantic bound for Marsh Harbour in the Bahamas, and many times ­throughout the islands.

We also tried to go down the path of no refrigeration. We did it as part-time liveaboards the first summer. We bought bags of ice every weekend. Then we attempted it as full-time liveaboards. But halfway through the Erie Canal, we ordered an Engel fridge and had it shipped to meet us in Annapolis, Maryland. For vegetables and eggs, we chose to keep our icebox filled, which meant that every two or three days, we were buying a bag of ice. If I wanted cold beer, I had to splurge for two bags of ice. 

Man, was the fridge worth it. Enjoying a cold beer off Hawksbill Cay in the Exumas while sitting waist-deep in crystal-clear water on a mile-long sandbar with new friends was bliss. The only downsides of the fridge are the space it takes up and the extra 100-watt solar panel we had to add for the energy use. 

Setting off aboard Ukiyo

With these changes and many other small projects done, we planned to set off from Monroe, Michigan. We quit our jobs, terminated our apartment lease, and attempted to move onto the boat. We struggled to fit all of our stuff aboard, so we laid out everything on the lawn in front of our slip. Curious dock neighbors came by later that evening, worried we were dividing up our belongings and separating. 

After two more weeks at the dock, we were bound for Annapolis via the Erie Canal, Hudson River, New Jersey coast and Delaware Bay. In Annapolis, we spent five weeks on a second refit geared toward offshore sailing. We anchored the boat up the Severn River near Severna Park, Maryland—my childhood hometown. 

With the help of my family, we had a mooring ball and access to a dock. My dad and I worked for weeks to finish some major items. We installed a Hydrovane self-steering system, replaced our 50 feet of three-eighths G4 chain with 125 feet, swapped out the 35-pound CQR anchor for a 44-pound Spade anchor, and added deck fittings and ­reinforcements for the Dyneema ­removable inner forestay. We also bought new sails and completed many minor projects. It was a real treat working with my dad, and my mom always had a ­world-class dinner ready when we got home. 

All of these items, in my mind, fell ­under the category of “keep the crew ­happy and healthy.” You see, happiness to me is sleeping soundly and staying well-rested at anchor and underway. Adding a Hydrovane, which acts as our third crewmember and steers the boat perfectly offshore, allowed Missy and me to relax. And the oversize Spade anchor has been worth every penny during winter cold fronts that blow through the Bahamas. 

Meanwhile, Missy converted my ­parents’ basement into another canvas loft. This time, she spent two weeks redoing our dodger and dodger frame. The smile on her face when the test fit was successful rivaled our wedding day. 

Finally, we added critical safety equipment, including an ISO-certified life raft, an EPIRB, two personal locator beacons and a new manual bilge pump. Then we were off to Morehead City, North Carolina, to wait for a weather window for a five-day trip offshore to Marsh Harbour. 

All in all, with our refitted boat, we spent three months cruising across Lake Erie and along the US East Coast, and then four months cruising the Bahamas. We waited out hurricane season in Luperón, Dominican Republic, with plans of sailing the Eastern Caribbean before heading west to Panama. 

The refit almost broke us a few times, even before we left the dock. There were so many unknowns, from how we would shower to whether we could actually live in such a small space. Once we left the dock, though, we immediately adapted to our new home and lifestyle. 

As we continue our journey, we wake up every morning not knowing what the day will bring. Will we swim with eagle rays? Run aground? Lose our dinghy? Adopt a kitten?

We never know. To us, this is what life is all about. It’s all part of the adventure. 

Follow Missy Hearn and Greg Thomasson’s journey on Instagram @sv_ukiyo or on their website, ­ thirdreefadventures.com .

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The Monsun 31 is a 30.75ft masthead sloop designed by Olle Enderlein and built in fiberglass by Hallberg Rassy between 1974 and 1982.

904 units have been built..

The Monsun 31 is a moderate weight sailboat which is slightly under powered. It is very stable / stiff and has a good righting capability if capsized. It is best suited as a coastal cruiser. The fuel capacity is originally small. There is a short water supply range.

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Monsun 31 No 001 celebrates 50 years - see her at Open Yard

24 Aug 2023

This classic, Monsun 31 with build number 001, is now celebrating 50 years! Welcome aboard this very boat, a renovated example that is exhibited at the Classic Dock at the Orust Sailboat Show with Open Yard , 25-27 August 2023. There are a total of 9 fine old classic boats on display at this year's Classic dock.

The  Monsun 31  is Hallberg-Rassy's all-time bestseller with a total of 904 boats built.

There will be a total of 86 yachts exhibited at the show, of which 21 yachts under construction, 22 new sailboats in the water, 22 used boats for sale, 9 fine old classic boats not for sale, and 12 power boats. There are outlets and many shore exhibitors.

No other boat show in Scandinavia has more sailing yachts to see.

• Hallberg Rassy

Monsun 31 - Hallberg Rassy / STW001289

The Monsun 31 produced by the builder Hallberg Rassy and designed by Olle Enderlein, is a cabin cruiser for cruise, rigged Sloop

Technical data

cabin cruiser

Volvo Penta MD 11 C - 23HP

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waterline length

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mast height

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standard version

DOCUMENTS: Monsun 31

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Bluewater Sailboat – Hallberg-Rassy 31 Monsun

Also called: monsun 31.

The Bluewater Sailboat Hallberg-Rassy 31 Monsun, launched in 1974, is a no-nonsense offshore cruiser with the superb build quality and strong enough for the needs of any long-distance sailor. The yacht has comfortable accommodations, a secure feel, and eye-catching lines. All of these factors contributed to her outstanding success as the all-time greatest seller for the famous Hallberg-Rassy brand.

Due to her rather substantial displacement, she does not point very high in weak breezes, although this is not why sailors buy the Monsun 31. Her water stability inspires confidence in offshore situations – she delivers an almost leisurely sensation, which has won her an outstanding reputation among sailors. 

• LOA: 30′ 9″
• LWL: 24′ 8″
• Beam: 9’ 5″
• Draft: 4′ 7″
• Displacement: 9,250 lbs.
• Ballast: 4,200 lbs.
• Sail Area: 430 sq. ft.
• Water: 43 US Gal.
• Fuel: 32 US Gal.
• Engine: 23hp Volvo Penta MD11C
• Designer: Olle Enderlein
• Builder: Hallberg-Rassy
• Year Introduced: 1974
• Year Ended: 1982
• Total Built: 904
• Also Known As: Monsun 31

The Bluewater Sailboat Monsun 31 is notable for being the first entirely new design from the Hallberg-Rassy yard following the merging of the Rassy and Hallberg boatyards in 1972, which formed the company name. The new company was formed when German expatriate Christophe Rassy purchased the rival and well-respected Hallberg yard when its founder, Harry Hallberg, decided to retire.

Rassy was building his Rasmus 35, a robust center-cockpit cruiser, at the time, while Hallberg was producing four boats ranging in size from 24 to 33 feet. Hallberg’s Mistress 32, a very racing-oriented design that competed effectively in the IOR half-tonne class, was particularly troublesome. She was in full production and was working on a yacht that was both expensive to build and sold for a low price – this was bad business, and Hallberg-Rassy needed something new.

Rassy asked Olle Enderlein to design a yacht similar to the Rasmus 35 but smaller and more streamlined. The new boat needed to have an interior that appealed to couples, and standards of comfort were essential. Enderlein based the new interior concept on the Mistress, but it was simpler, more streamlined, and straightforward to construct, making it more inexpensive. Production began in 1974, with a total of 904 boats constructed until 1982 when the boat was supplanted by the Hallberg-Rassy 312. (launched in 1979).

If you are interested in learning more about the specifications and details of a sailboat, we recommend visiting the page Bluewater Sailboat data by  Ocean Wave Sail . This page provides comprehensive information and is an excellent resource for anyone seeking detailed information about 1000+ sailboats.

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Hallberg-Rassy Monsun 31 ** NOW SOLD **

Used yachts for sale, sail monohulls 30ft > 35ft,        hallberg-rassy boats for sale, hallberg-rassy monsun 31 boats for sale.

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Hallberg-Rassy Monsun 31

Build year:  1975, kappeln / nordhafen, germany, sailing boat for sale.

• Alc-Yachting GmbH
• Am Hafen 23b
• 24376 Kappeln
• +49 (0)4642965959

Description

The photos of the Monsun 31 were taken by us for the purpose of sale and show the current condition of the boat. Updates & Maintenance: - Last engine inspection in 2022 - New forestay in 2022 - New furling system, Furlex, in 2022 - Mainsail 21.2m² with partial battens, new in 2020 - Genoa II 29.7m², new in 2020 - New genoa cover in 2020 - Cooling unit of the refrigerator new in 2019 - Underwater hull with new paint system in 2018 with osmosis protection (Underwater hull sandblasted and all layers of paint reapplied) - Raymarine i70, Tri Data new in 2018 (depth sounder, log, wind) - Raymarine Axiom 7", new in 2018 (chart plotter) - Diesel heating, Eberspächer, new in 2017 Mainsail furling system, boom furling "Volksreff" Unused holding tank, not functional (incorrectly connected) Complete renewal of the underwater hull paint system in 2018 including osmosis protection (prevention). Hull rubbing strake (special accessory) Sails: 1) Mainsail: 21.2m², new in 2020, partial battens, condition: good 2) Genoa II: 29.7m², new in 2020, condition: good 3) Genoa III: 18.5m², new in 2014, condition: good - Tack point retrofitted in 2014 4) Spinnaker: old, with spinnaker pole and equipment We accompany viewings by appointment, Tuesday - Saturday from 09:00 - 17:00. Please arrange an appointment with us by calling 04642 / 96 59 59 (office; Mon - Fri, 09:00 - 14:00) or via email to [email protected].

Billederne af Monsun 31 blev taget af os til salg og viser bådens aktuelle vedligeholdelsesstand. Nyheder og vedligeholdelse: - Seneste motorinspektion i 2022 - Ny forstag i 2022 - Ny rulleforstag, Furlex i 2022 - Storsejl på 21,2 m² med delvis batten, nyt i 2020 - Genua II på 29,7 m², nyt i 2020 - Nyt presenning til forsejl i 2020 - Køleboksens køleenhed nyt i 2019 - Skrog under vandlinjen fik ny maling i 2018 med osmosebeskyttelse (Skroget blev sandblæst og alle malinglag blev påført igen) - Raymarine i70, Tri Data nyt i 2018 (ekkolod, log, vind) - Raymarine Axiom 7" nyt i 2018 (søkortplotter) - Dieselvarme, Eberspächer, nyt i 2017 Rulleforstag til storsejl, rullebom "Volksreff" Fækalietank (ubrugt) til stede, ikke funktionsdygtig (forkert tilsluttet) Skrogbeskyttelse blev fuldstændig fornyet i 2018 inklusive osmosebeskyttelse (forebyggelse). Skrogbeskyttelsesliste (ekstraudstyr) Sejl: 1) Storsejl: 21,2 m², nyt i 2020, delvis batten, tilstand: god 2) Genua II: 29,7 m², nyt i 2020, tilstand: god 3) Genua III: 18,5 m², nyt i 2014, tilstand: god - Holepunkt eftermonteret i 2014 4) Spiler: gammel, med spilerbom og udstyr Vi følger med på besigtigelser efter aftale, tirsdag til lørdag fra kl. 09-17. Aftal venligst en tid med os på 04642 / 96 59 59 (kontor, mandag til fredag, kl. 09-14) eller via e-mail til [email protected].

Bilderna på Monsun 31 togs av oss för försäljning och visar båtens aktuella skick. Nyheter och underhåll: - Senaste motorinspektionen 2022 - Förstag nytt 2022 - Rullfocksystem, Furlex nytt 2022 - Storsegel 21,2m² med delvis lattning, nytt 2020 - Genua II 29,7 m², nytt 2020 - Presenning för försegel nytt 2020 - Kylboxens kylaggregat nytt 2019 - Bottenmålning med osmosskydd 2018 (botten sandblästrad och alla färgskikt förnyade) - Raymarine i70, Tri Data nytt 2018 (ekolod, logg, vind) - Raymarine, Axiom 7", nytt 2018 (sjökortsplotter) - Dieselvärmare, Eberspächer, nytt 2017 Rullfocksystem för storsegel, rullande bom "Volksreff" Fekaltank (obrukad) finns, fungerar inte (felaktigt ansluten) Bottenmålning helt förnyad 2018 inklusive osmosskydd (förebyggande åtgärd). Skrovskyddslister (extrautrustning) Segel: 1) Storsegel: 21,2 m², nytt 2020, delvis lattning, skick: bra 2) Genua II: 29,7m², nytt 2020, skick: bra 3) Genua III: 18,5m², nytt 2014, skick: bra - Hålplats eftermonterad 2014 4) Spinnaker: gammal, med spibom och utrustning Vi följer med på visningar efter överenskommelse, tis-lör kl. 09-17. Vänligen boka tid med oss på 04642 / 96 59 59 (kontor, mån-fre kl. 09-14) eller via e-post till [email protected].

De foto's van de Monsun 31 zijn door ons genomen voor de verkoop en tonen de huidige staat van onderhoud van de boot. Nieuwigheden & onderhoud: - Laatste motorinspectie in 2022 - Nieuwe voorstag in 2022 - Nieuwe Furlex-rolfokinstallatie in 2022 - Grootzeil van 21,2m² met deellatten, nieuw in 2020 - Genua II van 29,7m², nieuw in 2020 - Nieuwe beschermhoes voor de voorzeilen in 2020 - Nieuwe koelboxkoelunit in 2019 - Onderwaterschip met nieuwe verflaag in 2018 met osmosebescherming (Onderwaterschip gestraald en alle verflagen opnieuw aangebracht) - Raymarine i70, Tri Data nieuw in 2018 (dieptemeter, log, wind) - Raymarine Axiom 7", nieuw in 2018 (zeekaartplotter) - Dieselverwarming, Eberspächer, nieuw in 2017 Rolreefsysteem voor grootzeil, rolfok "Volksreff" Fecaliëntank (ongebruikt) aanwezig, niet functioneel (verkeerd aangesloten) Volledig nieuwe verflaag op het onderwaterschip in 2018 inclusief osmosebescherming (preventie). Rompschuurlijst (speciale accessoire) Zeilen: 1) Grootzeil: 21,2m², nieuw in 2020, deellatten, conditie: goed 2) Genua II: 29,7m², nieuw in 2020, conditie: goed 3) Genua III: 18,5m², nieuw in 2014, conditie: goed - Holepunt geïnstalleerd in 2014 4) Spinnaker: oud, met spiboom en uitrusting Wij begeleiden bezichtigingen op afspraak, van dinsdag tot zaterdag tussen 09.00 en 17.00 uur. Gelieve een afspraak met ons te maken via 04642 / 96 59 59 (kantoor, maandag tot vrijdag, 09.00-14.00 uur) of via e-mail naar [email protected].

Die Fotos von der Monsun 31 wurden von uns für den Verkauf aufgenommen und zeigen den aktuellen Pflegezustand des Bootes. Neuerungen & Wartung: - letzte Motorinspektion 2022 - Vorstag neu 2022 - Vorsegelrollanlage, Furlex neu 2022 - Großsegel 21,2m² mit Teillattung, neu 2020 - Genua II 29,7 m², neu 2020 - Vorsegelpersenning neu 2020 - Kühlaggregat der Kühlbox neu 2019 - Unterwasserschiff neuer Farbaufbau 2018 mit Osmoseschutz (Uw. gesandstrahlt und alle Farbschichten neu aufgetragen) - Raymarine i70, Tri Data neu 2018 (Echolot, Log, Wind) - Raymarine, Axiom 7", neu 2018 (Seekartenplotter) - Dieselheizung, Eberspächer, neu 2017 Großsegelrollanlage, Baumroll "Volksreff" Fäkalientank (unbenutzt) vorhanden, nicht funktionsfähig (falsch angeschlossen) Farbaufbau des Unterwasserschiffes vollständig erneuert 2018 inkl. Osmoseschutz (Prävention). Rumpfscheuerleiste (Sonderzubehör) Segel: 1) Großsegel: 21,2 m², neu 2020, Teillattung, Zustand: gut 2) Genua II: 29,7m², neu 2020, Zustand: gut 3) Genua III: 18,5m², neu 2014, Zustand: gut - Holepunkt nachgerüstet 2014 4) Spinnaker: alt, mit Spi-Baum und Einrichtung Wir begleiten Besichtigungen, nach Terminabsprache, Di. - Sa. in der Zeit von 09 - 17Uhr. Bitte stimmen Sie einen Termin mit uns ab unter 04642 / 96 59 59 (Büro; Mo.- Fr., 09-14Uhr) oder via E-Mail an die [email protected].

Materiale / unit

Deplacement

Motor & technic

Volvo Penta MD20 30

Total power

Engine place

Hallberg-Rassy Yachts

In the coastal town of Ellös, Sweden, Hallberg Rassy is a renowned boatbuilder. Their best-selling boats include the Hallberg Rassy 42 , known for its elegant design and superb performance. The Hallberg Rassy 310 , a compact but capable sailboat, is a favorite among solo sailors and couples. With unmatched craftsmanship, Hallberg Rassy boats endure challenging conditions while offering comfort. Sailors worldwide are enchanted by these vessels that bring seafaring dreams to life. The legacy of Hallberg Rassy continues, as their shipyard remains a haven for passionate boatbuilders who craft exceptional vessels. From tranquil sunsets to thrilling journeys, Hallberg Rassy boats create unforgettable memories for adventurers chasing the freedom of the seas.

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• Sailboat Guide

1975 Hallberg-Rassy Monsun 31

• Description

Seller's Description

#112 (USCG documented). A few of the many upgrades include Rebuilt Perkins engine, Professional diesel tank cleaning, New transmission shaft, New solar panels, New life raft, New EPIRB, Water Maker, Newer standing rigging and chain plates, Multiple compliment of sails, Lifeline AGM Batteries, Newer barrier coat/Petit Pro hard bottom paint – no blisters. Many, many more upgrades and equipment to list. Location: Cofresi, Dominciain Republic, Ocean World Marina, $55,000. Please review website for a complete overview: www.hr31forsale.com .

Rig and Sails

Auxilary power, accomodations, calculations.

The theoretical maximum speed that a displacement hull can move efficiently through the water is determined by it's waterline length and displacement. It may be unable to reach this speed if the boat is underpowered or heavily loaded, though it may exceed this speed given enough power. Read more.

Classic hull speed formula:

Hull Speed = 1.34 x √LWL

Max Speed/Length ratio = 8.26 ÷ Displacement/Length ratio .311 Hull Speed = Max Speed/Length ratio x √LWL

Sail Area / Displacement Ratio

A measure of the power of the sails relative to the weight of the boat. The higher the number, the higher the performance, but the harder the boat will be to handle. This ratio is a "non-dimensional" value that facilitates comparisons between boats of different types and sizes. Read more.

SA/D = SA ÷ (D ÷ 64) 2/3

• SA : Sail area in square feet, derived by adding the mainsail area to 100% of the foretriangle area (the lateral area above the deck between the mast and the forestay).
• D : Displacement in pounds.

Ballast / Displacement Ratio

A measure of the stability of a boat's hull that suggests how well a monohull will stand up to its sails. The ballast displacement ratio indicates how much of the weight of a boat is placed for maximum stability against capsizing and is an indicator of stiffness and resistance to capsize.

Ballast / Displacement * 100

Displacement / Length Ratio

A measure of the weight of the boat relative to it's length at the waterline. The higher a boat’s D/L ratio, the more easily it will carry a load and the more comfortable its motion will be. The lower a boat's ratio is, the less power it takes to drive the boat to its nominal hull speed or beyond. Read more.

D/L = (D ÷ 2240) ÷ (0.01 x LWL)³

• D: Displacement of the boat in pounds.
• LWL: Waterline length in feet

Comfort Ratio

This ratio assess how quickly and abruptly a boat’s hull reacts to waves in a significant seaway, these being the elements of a boat’s motion most likely to cause seasickness. Read more.

Comfort ratio = D ÷ (.65 x (.7 LWL + .3 LOA) x Beam 1.33 )

• D: Displacement of the boat in pounds
• LOA: Length overall in feet
• Beam: Width of boat at the widest point in feet

Capsize Screening Formula

This formula attempts to indicate whether a given boat might be too wide and light to readily right itself after being overturned in extreme conditions. Read more.

CSV = Beam ÷ ³√(D / 64)

Launched in 1974 the Hallberg-Rassy 31 Monsun is a no-nonsense offshore cruiser with excellent build quality and sturdy enough for the needs of any long distance sailor. The boat is blessed with good accommodation, a secure feel, and eye-catching lines. These all had a parts to play in her notable success as the all time best seller for the prestigious Hallberg-Rassy brand.

Performance is mediocre due to her relatively heavy displacement, she does not point very high in light winds but this is not the reason sailors buy the Monsun 31. It’s her stability in the water that inspires confidence in offshore conditions – she gives an almost leisurely feel, and it’s this that’s earned her an excellent reputation among sailors.

Overall this 31-footer from the 1970s is sought after and this is reflected in her high price. You’ll find few owners looking to sell their boat.

The Monsun 31 bares the distinction as the first all-new design from the Hallberg-Rassy yard after the merger of the Rassy and Hallberg boatyards in 1972 that formed the company name. The new company came into existence when German expatriate Christophe Rassy bought the competing and well-respected Hallberg yard when it was time for its founder, Harry Hallberg, to retire.

At the time, Rassy was successfully building his Rasmus 35 , a sturdy centre-cockpit cruiser, while Hallberg was producing four boats ranging from 24 to 33 feet. Of particular trouble was Hallberg’s Mistress 32, a very racing oriented design that competed successfully in the IOR half ton class. She was in full production and was at boat that was both expensive to build and sold relatively cheaply – this was terrible business and Hallberg-Rassy needed something new.

Rassy approached Olle Enderlein to draw up a boat similar to the Rasmus 35 but smaller and sleeker. The new boat had to have an interior that appealed to couples and for that it was important to have levels of comfort. Enderlein based the layout of the new interior on the Mistress but was much simpler, more streamlined and straightforward to produce and therefore affordable.

Production started in 1974 and a total of 904 boats were built until production ceased in 1982 when the boat was superseded by the Hallberg-Rassy 312 (launched in 1979).

Specifications

LOA: 30′ 9″ LWL: 24′ 8″ Beam: 9’ 5″ Draft: 4′ 7″ Displacement: 9,250 lbs. Ballast: 4,200 lbs. Sail Area: 430 sq. ft.

Water: 43 US Gal. Fuel: 32 US Gal. Engine: 23hp Volvo Penta MD11C

Designer: Olle Enderlein Builder: Hallberg-Rassy Year Introduced: 1974 Year Ended: 1982 Total Built: 904

Also Known As: Monsun 31

Similar Boats

Hallberg-Rassy 312

Hallberg-Rassy 310

Hallberg-Rassy 31

Hallberg-Rassy 352

Hallberg-Rassy 35 Rasmus

Links, References and Further Reading

» The official Halberg-Rassy website, information on the Hallberg-Rasssy 31 Monsun » Danish Monsun 31 Owners Club

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1976 halberg rassy monsun 31.

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