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Norlin 34 Mk I
Designer: Peter Norlin  ·  Builder: Solna Marine (Swe)  ·  First built: 1972
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About the Norlin 34 Mk I

Designed by renowned Swedish naval architect Peter Norlin and built by Solna Marine from 1972 onwards, this 34-footer represents solid Scandinavian craftsmanship from the early days of fiberglass production sailing. With 120 hulls launched during its production run, the Norlin 34 Mk I earned a reputation as a capable coastal cruiser with respectable sailing performance. The yacht's moderate displacement of 13,000 pounds and substantial ballast ratio provide good stability and seakindly motion in varied conditions. Her fin keel with rudder mounted on a protective skeg offers a practical compromise between performance and durability, while the masthead sloop rig delivers straightforward sail handling. The hull's proportions suggest a boat designed primarily for cruising rather than racing, though her sail area to displacement ratio of 15.16 indicates reasonably spirited performance under sail. Built during an era when European builders emphasized robust construction and practical layouts, the Norlin 34 Mk I appeals to sailors seeking a well-engineered cruising yacht capable of extended coastal passages. Her comfortable motion and solid build quality reflect the Swedish tradition of creating seaworthy vessels suited to Northern European waters, while remaining manageable for small crews on extended cruises.

Core Dimensions
LOA (Length Overall) 33.67 ft / 10.26 m
LWL (Waterline Length) 26.75 ft / 8.15 m
Beam 11.05 ft / 3.37 m
Max Draft 6.30 ft / 1.92 m
Displacement 13,000.00 lb / 5,897 kg
Ballast 5,075.00 lb / 2,302 kg
Sail Area (Reported) 522.00 ft² / 48.50 m²
Design & Construction
Hull Type Fin with rudder on skeg
Rigging Type Masthead Sloop
Construction FG
Designer Peter Norlin
Builder Solna Marine (SWE)
First Built 1972
Number Built 120
Associations IOR 3/4 ton
Related Sailboats Dufour 34 · Omega 34 · Grampian 34 · Seafarer 34 · Tartan 33
Owner Reviews

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Performance Ratios
SA/Displacement Sail Area to Displacement ratio measures how much sail power a boat has relative to its weight. Higher values mean more performance and speed.
Under 14 — Heavy cruiser, slow14–18 — Cruising sailboat18–22 — Cruiser/racerOver 22 — Performance racer
 15.16
Ballast/Displacement Ballast to Displacement ratio shows what percentage of the boat's total weight is ballast. Higher values generally mean better initial stability and stiffer sail carrying.
30–35% — Typical cruiser35–45% — Stiff performance boatOver 45% — Racing oriented
 39.04
Displacement/Length Displacement to Length ratio measures how heavy a boat is relative to its waterline length. Lower values mean a lighter, faster boat.
Under 100 — Ultralight racer100–200 — Light cruiser/racer200–300 — Moderate cruiser300–400 — Heavy cruiserOver 400 — Very heavy
 303.2
Comfort Ratio Ted Brewer's Comfort Ratio predicts how comfortable a boat will feel in offshore conditions. Higher values mean a steadier, more comfortable motion in a seaway.
Under 20 — Uncomfortably rough20–30 — Acceptable coastal30–40 — Good offshore comfortOver 40 — Very comfortable offshore
 28.42
Capsize Screening Formula The USHS Capsize Screening Formula estimates offshore capsize risk. Lower is safer — values under 2.0 are considered acceptable for offshore sailing.
Under 2.0 — Safe for offshore2.0–2.2 — Borderline offshoreOver 2.2 — Coastal use recommended
 1.88
Hull Speed Hull Speed is the theoretical maximum speed of a displacement hull, calculated from waterline length. Most cruising sailboats reach this speed in moderate conditions. 6.93 kn
S# (Speed Number) The Speed Number (S#) is a quick performance index. Higher values indicate a faster, more powerful design relative to its size.
Under 3.0 — Slow cruiser3.0–5.0 — Average cruiser5.0–7.0 — Performance cruiserOver 7.0 — Racer
 1.58
Pounds/Inch Immersion Pounds per Inch Immersion (PPI) tells you how much weight is needed to sink the boat one inch. Useful for calculating how additional gear and stores affect waterline. 1,056.17 pounds/inch
SA/Displacement (Calc) Calculated Sail Area to Displacement ratio using actual measured sail dimensions rather than reported values. More precise than the reported SA/Disp figure. 15.16
Rig Dimensions
I (Foretriangle Height) 43.40 ft / 13.23 m
J (Foretriangle Base) 14.43 ft / 4.40 m
P (Mainsail Luff) 36.41 ft / 11.10 m
E (Mainsail Foot) 11.48 ft / 3.50 m
SA Fore 313.13 ft² / 29.09 m²
SA Main 208.99 ft² / 19.42 m²
SA Total (100%) 522.12 ft² / 48.51 m²
Est. Forestay Length 45.74 ft / 13.94 m
Engine & Accommodations
Engine Make Farymann
Engine Model LA
Engine Type Diesel
Horsepower 12
Fuel Capacity 10 gals / 38 L
How It Compares

vs. Dufour 34, Grampian 34, Omega 34, Seafarer 34, Tartan 33

This boat Similar boats
Dimensions
LOA
Norlin 34 Mk I ★
33.7 ft
Dufour 34
33.6 ft
Grampian 34
33.6 ft
Omega 34
33.7 ft
Seafarer 34
33.8 ft
Tartan 33
33.7 ft
LWL
Norlin 34 Mk I ★
26.8 ft
Dufour 34
25.4 ft
Grampian 34
26.5 ft
Omega 34
27.8 ft
Seafarer 34
25.5 ft
Tartan 33
28.8 ft
Beam
Norlin 34 Mk I ★
11.1 ft
Dufour 34
10.8 ft
Grampian 34
10.0 ft
Omega 34
9.7 ft
Seafarer 34
10.0 ft
Tartan 33
11.0 ft
Displacement
Norlin 34 Mk I ★
13 lbs
Dufour 34
11 lbs
Grampian 34
12 lbs
Omega 34
10 lbs
Seafarer 34
11 lbs
Tartan 33
10 lbs
Ballast
Norlin 34 Mk I ★
5 lbs
Dufour 34
4 lbs
Grampian 34
5 lbs
Omega 34
4 lbs
Seafarer 34
4 lbs
Tartan 33
4 lbs
Sail Area
Norlin 34 Mk I ★
522 sq ft
Dufour 34
—
Grampian 34
551 sq ft
Omega 34
581 sq ft
Seafarer 34
497 sq ft
Tartan 33
531 sq ft
Performance
PHRF Rating (lower = faster)
Norlin 34 Mk I ★
—
Dufour 34
141 s/nm
Grampian 34
171 s/nm
Omega 34
—
Seafarer 34
186 s/nm
Tartan 33
153 s/nm
SA / Displacement (higher = more powerful)
Norlin 34 Mk I ★
15.2
Dufour 34
—
Grampian 34
16.9
Omega 34
19.9
Seafarer 34
15.5
Tartan 33
18.4
Ballast / Disp (higher = stiffer)
Norlin 34 Mk I ★
39.0 %
Dufour 34
40.0 %
Grampian 34
—
Omega 34
—
Seafarer 34
—
Tartan 33
—
Comfort Ratio (higher = more comfortable offshore)
Norlin 34 Mk I ★
28.4
Dufour 34
—
Grampian 34
30.2
Omega 34
25.8
Seafarer 34
30.1
Tartan 33
21.0
Capsize Screening (lower = safer)
Norlin 34 Mk I ★
1.88
Dufour 34
—
Grampian 34
1.75
Omega 34
1.79
Seafarer 34
1.77
Tartan 33
2.04
Displacement / Length (lower = lighter)
Norlin 34 Mk I ★
303
Dufour 34
299
Grampian 34
—
Omega 34
—
Seafarer 34
—
Tartan 33
—
Hull Speed
Norlin 34 Mk I ★
6.9 kts
Dufour 34
—
Grampian 34
6.9 kts
Omega 34
7.1 kts
Seafarer 34
6.8 kts
Tartan 33
7.2 kts
Speed Number (higher = faster)
Norlin 34 Mk I ★
1.6
Dufour 34
—
Grampian 34
1.4
Omega 34
2.8
Seafarer 34
1.5
Tartan 33
3.0
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