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Sea Tiger 34
Designer: William Garden  ·  Builder: Formosa Yachts  ·  First built: 1976
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About the Sea Tiger 34

A lesser-known entry in the cruising sailboat market, the Sea Tiger 34 occupies a niche that appeals to sailors seeking a capable bluewater cruiser with a manageable size. Designed with offshore passagemaking in mind, this vessel reflects the practical priorities of serious cruising sailors — sturdy construction, comfortable accommodations for extended passages, and reliable handling in a range of sea conditions. With limited documentation widely available, the Sea Tiger 34 remains something of an undiscovered gem, often appreciated by those who stumble upon it through word of mouth within the cruising community. Its 34-foot length places it in a versatile category suited equally to coastal daysailing and longer bluewater adventures, offering enough interior volume for liveaboard comfort without becoming unwieldy for a small crew or couple. Prospective buyers researching the Sea Tiger 34 would be well advised to seek out existing owners and class associations, as firsthand accounts often reveal the most useful insights into a boat with sparse published data. Careful inspection and a professional survey are particularly recommended given the limited availability of factory documentation.

Core Dimensions
LOA (Length Overall) 34.00 ft / 10.36 m
LWL (Waterline Length) 26.67 ft / 8.13 m
Beam 11.25 ft / 3.43 m
Max Draft 4.42 ft / 1.35 m
Displacement 18,000.00 lb / 8,165 kg
Ballast 4,000.00 lb / 1,814 kg
Design & Construction
Hull Type Long Keel
Rigging Type Masthead Sloop
Construction FG
Designer William Garden
Builder Formosa Yachts
First Built 1976
Owner Reviews

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Performance Ratios
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
38.36
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
1.72
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. 6.92
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. 1.0
How It Compares

vs. Aloha 34, Formosa 34, Hans Christian 34, Pacific Seacraft 34, Rival 34

This boat Similar boats
Dimensions
LOA
Sea Tiger 34 ★
34.0 ft
Aloha 34
34.0 ft
Formosa 34
34.0 ft
Hans Christian 34
34.0 ft
Pacific Seacraft 34
34.1 ft
Rival 34
34.0 ft
LWL
Sea Tiger 34 ★
26.7 ft
Aloha 34
28.7 ft
Formosa 34
29.5 ft
Hans Christian 34
29.2 ft
Pacific Seacraft 34
26.2 ft
Rival 34
24.8 ft
Beam
Sea Tiger 34 ★
11.3 ft
Aloha 34
11.2 ft
Formosa 34
11.8 ft
Hans Christian 34
11.0 ft
Pacific Seacraft 34
10.0 ft
Rival 34
9.7 ft
Displacement
Sea Tiger 34 ★
18 lbs
Aloha 34
13 lbs
Formosa 34
13 lbs
Hans Christian 34
19 lbs
Pacific Seacraft 34
13 lbs
Rival 34
11 lbs
Ballast
Sea Tiger 34 ★
4 lbs
Aloha 34
4 lbs
Formosa 34
4 lbs
Hans Christian 34
7 lbs
Pacific Seacraft 34
4 lbs
Rival 34
4 lbs
Sail Area
Sea Tiger 34 ★
Aloha 34
531 sq ft
Formosa 34
Hans Christian 34
676 sq ft
Pacific Seacraft 34
533 sq ft
Rival 34
Performance
PHRF Rating (lower = faster)
Sea Tiger 34 ★
Aloha 34
Formosa 34
Hans Christian 34
201 s/nm
Pacific Seacraft 34
192 s/nm
Rival 34
SA / Displacement (higher = more powerful)
Sea Tiger 34 ★
Aloha 34
15.0
Formosa 34
Hans Christian 34
15.0
Pacific Seacraft 34
15.1
Rival 34
Ballast / Disp (higher = stiffer)
Sea Tiger 34 ★
Aloha 34
34.6 %
Formosa 34
30.9 %
Hans Christian 34
37.1 %
Pacific Seacraft 34
Rival 34
39.5 %
Comfort Ratio (higher = more comfortable offshore)
Sea Tiger 34 ★
38.4
Aloha 34
27.9
Formosa 34
25.4
Hans Christian 34
40.2
Pacific Seacraft 34
34.0
Rival 34
Capsize Screening (lower = safer)
Sea Tiger 34 ★
1.72
Aloha 34
1.88
Formosa 34
1.99
Hans Christian 34
1.64
Pacific Seacraft 34
1.68
Rival 34
Displacement / Length (lower = lighter)
Sea Tiger 34 ★
Aloha 34
257
Formosa 34
236
Hans Christian 34
349
Pacific Seacraft 34
Rival 34
347
Hull Speed
Sea Tiger 34 ★
6.9 kts
Aloha 34
7.2 kts
Formosa 34
7.3 kts
Hans Christian 34
7.2 kts
Pacific Seacraft 34
6.9 kts
Rival 34
Speed Number (higher = faster)
Sea Tiger 34 ★
Aloha 34
1.9
Formosa 34
Hans Christian 34
Pacific Seacraft 34
1.4
Rival 34
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