Norlin 34 Mk I Sailboat Review, Specs, and Listings

Peter Norlin·1972·~120 hulls·Solna Marine
Norlin 34 Mk I drawingBuilder drawing
Hull Type
Monohull · fin
Rig
Masthead Sloop
LOA
33.67' · 10.26 m
Disp.
13,000 lbs · 5,897 kg
First year
1972

The Norlin 34 Mk I is a 33foot8inch masthead sloop drawn by Swedish maritime architect Peter Norlin in the early seventies and built by the Swedish yard Vikens Varv, with fewer than 200 examples launched. Peter Norlin himself summed up his design philosophy for the boat as “clean lines, clean sailing,” and the result is a vessel that earned a reputation as an offshore thoroughbred of the IOR era — one that still carried warm interiors meant for family cruising as well.

Measurements

Dimensions 01

Length Overall
33.67 ft
Length on deck
Waterline Length
26.75 ft
Beam
11.05 ft
Draft
6.3 ft
Maximum Headroom
Air Draft

Construction & hull 02

Construction
Fiberglass
Hull Type
Monohull
Keel Type
Fin
Rudder
1× Skeg-Hung
Ballast
5,075 lbs (Lead)
Displacement
13,000 lbs
Water Capacity
Fuel Capacity

Rig & sails 03

Rigging Type
Masthead Sloop
Mainsail luff
36.41 ft
Mainsail foot
11.48 ft
Foretriangle height
43.4 ft
Foretriangle base
14.43 ft
Forestay Length (estimated)
45.74 ft
Sail Area
522 sqft

Calculations 04

Sail Area to Displacement Ratio
15.1
Ballast to Displacement Ratio
39.04
Displacement to Length Ratio
303.2
Comfort Ratio
28.42
Capsize Screening Ratio
1.88
Hull Speed
6.93 kn

Design and Construction

The Norlin 34 Mk I pairs a solid fiberglass hull with a lead fin keel, the kind of straightforward Scandinavian construction that anchors a serious cruiser-racer. At a displacement near 13,000 pounds with roughly 5,075 pounds of lead ballast, the boat sits at a ballast ratio around 40 percent and a displacement-length ratio of 283, which places her among the “heavy cruisers” rather than featherweight racers. Her length-to-beam ratio of 3.06 and a wetted surface near 344 square feet describe a hull with moderate beam and a substantial underbody, while an immersion rate of about 1,024 pounds per inch tells you how reluctantly she changes trim as load comes aboard.

Rig and Handling

The Norlin 34 Mk I carries a masthead rig that is slightly underrigged relative to similar sailboats, with more rig than only 31 percent of her peers and a sail-area-to-displacement ratio of 15.0 under the ISO reference sail, rising to 18.1 with a 135 percent genoa. On the wind with tired old sails, one owner found the helm light and the boat willing to hold a course locked on her wheel — a trait that speaks to a balanced, predictable forefoot. The theoretical hull speed is 6.9 knots, and the capsize screening value of 1.86 plus a Motion Comfort Ratio spanning 24.1 to 28.8 frame a stable, seakindly profile rather than a twitchy inshore planing hull.

Performance and Racing Pedigree

Writing in Yachting World, one longtime owner described how the 34 became a bit of a legend in Sweden for her wins in the Gotland Runt offshore race in the Baltic, with strong finishes in the Fastnet and other classic 1970s IOR-era offshore events. The same owner’s 1977 “Special” was a one-off built on the standard 34 hull with a flush foredeck and racing cockpit layout for that year’s Gotland Runt. Under power, the Farymann LA diesel with shaft drive calculates to a max of about 3.7 knots — modest, but adequate for harbor work in a boat whose true speed lives under sail, where a Relative Speed Performance of 62 places her competently among period designs.

Accommodations

The standard Norlin 34 Mk I is equipped with five berths, a galley, and a toilet facility, and the warm interior of the era’s racing boats made her as suited to fun family cruising as to the racecourse. In the described one-off, a big quarterberth aft and a starboard pilot bunk gave the owner’s family practical sleep spaces on a Baltic cruise. The simple electrical setup on that boat — one battery for a tiny fridge and cabin lights, another to start the engine, with a single 50-watt solar panel on a pole aft charging both — illustrates how minimally the design was originally trimmed out, with no electronics, pressure water, autopilot, chartplotter, or shower as delivered.

The Verdict

The Norlin 34 Mk I is a Peter Norlin classic that bridges IOR-race credibility and family cruising comfort without pretending to be a lightweight sprinter. Her heavy-cruiser displacement, lead fin, and balanced helm reward a sailor who values seakindly predictability and a clean deck philosophy over maximal sail area.

Pros

  • Proven offshore pedigree with Gotland Runt wins and Fastnet-era strong finishes
  • Stable, seakindly numbers: capsize screening 1.86, comfort ratio to 28.8
  • Warm five-berth interior suited to family cruising
  • Light, self-steering tendency on the wind per owner report

Cons

  • Slightly underrigged masthead rig versus peers
  • Modest 3.7-knot calculated engine speed under Farymann LA diesel
  • Deep draft around 6.2–6.5 feet limits her to major marinas

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