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Tashiba 31
Designer: Robert Perry  ·  Builder: Ta Shing Yacht Building  ·  First built: 1986
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About the Tashiba 31

Designed with serious bluewater cruising in mind, the Tashiba 31 is a capable offshore sailboat built by Ta Shing Yacht Building of Taiwan, a shipyard long respected for producing sturdy, well-finished cruising boats. Like other vessels to emerge from Ta Shing's yard, the Tashiba 31 carries a reputation for solid construction and thoughtful design, reflecting the builder's commitment to quality fiberglass work and seaworthy hulls. Suited to extended coastal passages and offshore voyaging, this boat appeals to sailors who prioritize reliability and safety over speed or racing performance. Her design leans toward the traditional end of the spectrum, offering a stable, sea-kindly platform that inspires confidence in challenging conditions. The Tashiba 31 is generally regarded as a manageable size for short-handed sailing while still providing enough space for comfortable liveaboard passages. For buyers researching this model, she represents an entry point into the respected Ta Shing lineage at a more accessible size. Prospective owners should seek out examples with documented maintenance histories, as older fiberglass production cruisers benefit greatly from careful upkeep to preserve their offshore-ready character.

Core Dimensions
LOA (Length Overall) 31.19 ft / 9.51 m
LWL (Waterline Length) 25.42 ft / 7.75 m
Beam 10.67 ft / 3.25 m
Max Draft 5.00 ft / 1.52 m
Displacement 13,790.00 lb / 6,255 kg
Ballast 4,705.00 lb / 2,134 kg
Sail Area (Reported) 552.00 ft² / 51.28 m²
Design & Construction
Hull Type Long Keel
Rigging Type Cutter
Construction FG
Designer Robert Perry
Builder Ta Shing Yacht Building
First Built 1986
Last Built 1988
Related Sailboats ["Hunter 31" · "Tartan 31" · "Irwin 31 Citation" · "Niagara 31" · "Contest 31"]
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Performance Ratios
PHRF Rating PHRF (Performance Handicap Racing Fleet) is a national racing handicap measured in seconds per nautical mile. Lower values indicate faster boats. Ratings are sourced from US Sailing's national database (median across 60+ regional fleets).
Under 0 — Ultralight racer0–90 — Performance racer90–150 — Cruiser/racer150–210 — Typical cruiserOver 210 — Heavy/slow cruiser
 234
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
 15.41
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
 33.53
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
 1.78
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. 6.76
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
 1.17
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. 969.14
Rig Dimensions
I (Foretriangle Height) 45.0
J (Foretriangle Base) 13.0
P (Mainsail Luff) 40.0
E (Mainsail Foot) 13.0
SA Fore 292.5
SA Main 260.0
How It Compares

vs. Irwin 31 Citation, Niagara 31, Tartan 31

This boat Similar boats
Dimensions
LOA
Tashiba 31 ★
31.2 ft
Irwin 31 Citation
31.3 ft
Niagara 31
31.3 ft
Tartan 31
31.3 ft
LWL
Tashiba 31 ★
25.4 ft
Irwin 31 Citation
26.5 ft
Niagara 31
24.3 ft
Tartan 31
26.0 ft
Beam
Tashiba 31 ★
10.7 ft
Irwin 31 Citation
11.0 ft
Niagara 31
10.3 ft
Tartan 31
10.9 ft
Displacement
Tashiba 31 ★
13 lbs
Irwin 31 Citation
9 lbs
Niagara 31
8 lbs
Tartan 31
9 lbs
Ballast
Tashiba 31 ★
4 lbs
Irwin 31 Citation
3 lbs
Niagara 31
3 lbs
Tartan 31
3 lbs
Sail Area
Tashiba 31 ★
552 sq ft
Irwin 31 Citation
474 sq ft
Niagara 31
492 sq ft
Tartan 31
506 sq ft
Performance
PHRF Rating (lower = faster)
Tashiba 31 ★
234 s/nm
Irwin 31 Citation
165 s/nm
Niagara 31
162 s/nm
Tartan 31
159 s/nm
SA / Displacement (higher = more powerful)
Tashiba 31 ★
15.4
Irwin 31 Citation
17.2
Niagara 31
19.7
Tartan 31
18.7
Ballast / Disp (higher = stiffer)
Tashiba 31 ★
—
Irwin 31 Citation
36.6 %
Niagara 31
44.4 %
Tartan 31
43.2 %
Comfort Ratio (higher = more comfortable offshore)
Tashiba 31 ★
33.5
Irwin 31 Citation
21.1
Niagara 31
21.1
Tartan 31
20.9
Capsize Screening (lower = safer)
Tashiba 31 ★
1.78
Irwin 31 Citation
2.10
Niagara 31
2.05
Tartan 31
2.10
Displacement / Length (lower = lighter)
Tashiba 31 ★
—
Irwin 31 Citation
223
Niagara 31
250
Tartan 31
229
Hull Speed
Tashiba 31 ★
6.8 kts
Irwin 31 Citation
6.9 kts
Niagara 31
6.6 kts
Tartan 31
6.8 kts
Speed Number (higher = faster)
Tashiba 31 ★
1.2
Irwin 31 Citation
2.5
Niagara 31
2.4
Tartan 31
2.6
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