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Sea Sailer 30
Designer: Wirth Monroe  ·  Builder: Robin Fung Co. Ltd.  ·  First built: 1965
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About the Sea Sailer 30

A compact cruiser with a name that speaks to its purpose, the Sea Sailer 30 is designed for sailors who want a capable and manageable boat for coastal and near-shore adventures. While detailed specifications for this model are limited in available records, the Sea Sailer 30 fits within a tradition of practical, approachable sailboats built for weekend cruising and relaxed daysailing rather than competitive racing. Boats in this size range typically strike a balance between ease of handling and genuine seafaring ability, making them a popular choice for smaller crews or solo sailors looking to build confidence on the water. The Sea Sailer 30 is likely well-suited to sheltered coastal waters, bays, and harbors, offering enough space for comfortable short passages while remaining easy to trailer or berth. For prospective buyers, the limited documentation surrounding this model may make research challenging, but it also suggests a boat that may have been produced in smaller numbers, potentially offering good value on the used market. Connecting with owners through sailing clubs or forums is recommended to uncover firsthand experience with this vessel.

Core Dimensions
LOA (Length Overall) 29.83 ft / 9.09 m
LWL (Waterline Length) 26.00 ft / 7.92 m
Beam 10.17 ft / 3.10 m
Max Draft 4.50 ft / 1.37 m
Displacement 13,100.00 lb / 5,942 kg
Ballast 2,400.00 lb / 1,089 kg
Sail Area (Reported) 404.00 ft² / 37.53 m²
Design & Construction
Hull Type Long Keel
Rigging Type Masthead Sloop
Construction Wood planked (teak)
Designer Wirth Monroe
Builder Robin Fung Co. Ltd.
First Built 1965
Related Sailboats ["Pearson 30" · "Morgan Out Island 30" · "Grampian 30" · "Cape Dory 300 Ms" · "Baba 30"]
Owner Reviews

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Known Issues & What to Watch For

No known issues documented for this model yet.

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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
 11.67
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
 33.95
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
 1.73
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. 6.83
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. 944.8
How It Compares

vs. Cape Dory 300 Ms, Grampian 30, Morgan Out Island 30

This boat Similar boats
Dimensions
LOA
Sea Sailer 30 ★
29.8 ft
Cape Dory 300 Ms
29.9 ft
Grampian 30
29.8 ft
Morgan Out Island 30
29.8 ft
LWL
Sea Sailer 30 ★
26.0 ft
Cape Dory 300 Ms
26.5 ft
Grampian 30
25.5 ft
Morgan Out Island 30
24.8 ft
Beam
Sea Sailer 30 ★
10.2 ft
Cape Dory 300 Ms
11.4 ft
Grampian 30
9.5 ft
Morgan Out Island 30
9.2 ft
Displacement
Sea Sailer 30 ★
13 lbs
Cape Dory 300 Ms
11 lbs
Grampian 30
8 lbs
Morgan Out Island 30
9 lbs
Ballast
Sea Sailer 30 ★
2 lbs
Cape Dory 300 Ms
4 lbs
Grampian 30
3 lbs
Morgan Out Island 30
3 lbs
Sail Area
Sea Sailer 30 ★
404 sq ft
Cape Dory 300 Ms
442 sq ft
Grampian 30
425 sq ft
Morgan Out Island 30
375 sq ft
Performance
PHRF Rating (lower = faster)
Sea Sailer 30 ★
—
Cape Dory 300 Ms
293 s/nm
Grampian 30
192 s/nm
Morgan Out Island 30
—
SA / Displacement (higher = more powerful)
Sea Sailer 30 ★
11.7
Cape Dory 300 Ms
13.9
Grampian 30
16.3
Morgan Out Island 30
13.4
Ballast / Disp (higher = stiffer)
Sea Sailer 30 ★
—
Cape Dory 300 Ms
39.1 %
Grampian 30
—
Morgan Out Island 30
31.6 %
Comfort Ratio (higher = more comfortable offshore)
Sea Sailer 30 ★
34.0
Cape Dory 300 Ms
25.2
Grampian 30
24.7
Morgan Out Island 30
29.2
Capsize Screening (lower = safer)
Sea Sailer 30 ★
1.73
Cape Dory 300 Ms
2.03
Grampian 30
1.86
Morgan Out Island 30
1.73
Displacement / Length (lower = lighter)
Sea Sailer 30 ★
—
Cape Dory 300 Ms
275
Grampian 30
—
Morgan Out Island 30
277
Hull Speed
Sea Sailer 30 ★
6.8 kts
Cape Dory 300 Ms
6.9 kts
Grampian 30
6.8 kts
Morgan Out Island 30
6.7 kts
Speed Number (higher = faster)
Sea Sailer 30 ★
—
Cape Dory 300 Ms
1.8
Grampian 30
2.1
Morgan Out Island 30
1.6
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