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Seafarer 46
Designer: Sparkman & Stephens  ·  Builder: Seafarer Fiberglass Yachts  ·  First built: 1967
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About the Seafarer 46

A capable and spacious bluewater cruiser, the Seafarer 46 was built to carry crews comfortably across open ocean passages and extended coastal voyages alike. Produced by Seafarer Yachts, an American builder with a solid reputation for constructing sturdy fiberglass cruising boats during the 1970s and 1980s, the 46 sits at the larger end of the Seafarer lineup and reflects the era's emphasis on seaworthy construction and practical liveaboard comfort. Designed with offshore sailing in mind, the Seafarer 46 appeals to bluewater enthusiasts who prioritize stability, range, and habitability over racing performance. The hull design typical of this era favors a moderate displacement approach, offering a comfortable motion at sea and dependable handling in a range of conditions. Below decks, boats of this class generally offer generous living space suited to long-term cruising, making the 46 a practical choice for those considering extended passages or life aboard. For buyers researching a cruising platform with classic American pedigree and offshore capability, the Seafarer 46 represents a worthy candidate deserving a closer look.

Core Dimensions
LOA (Length Overall) 46.00 ft / 14.02 m
LWL (Waterline Length) 31.00 ft / 9.45 m
Beam 11.00 ft / 3.35 m
Max Draft 6.50 ft / 1.98 m
Displacement 27,000.00 lb / 12,247 kg
Ballast 11,250.00 lb / 5,103 kg
Sail Area (Reported) 938.00 ft² / 87.14 m²
Design & Construction
Hull Type Fin Keel
Rigging Type Masthead Yawl
Construction FG
Designer Sparkman & Stephens
Builder Seafarer Fiberglass Yachts
First Built 1967
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
16.74
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
48.21
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
1.47
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. 7.46
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
1.04
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
Rig Dimensions
I (Foretriangle Height) 51.25
J (Foretriangle Base) 17.25
P (Mainsail Luff) 45.4
E (Mainsail Foot) 19.11
SA Fore 442.03
SA Main 433.8
How It Compares

vs. Baltic 46, Grampian 46, Morgan 46 Scheel

This boat Similar boats
Dimensions
LOA
Seafarer 46 ★
46.0 ft
Baltic 46
46.2 ft
Grampian 46
46.0 ft
Morgan 46 Scheel
46.0 ft
LWL
Seafarer 46 ★
31.0 ft
Baltic 46
38.3 ft
Grampian 46
33.0 ft
Morgan 46 Scheel
39.3 ft
Beam
Seafarer 46 ★
11.0 ft
Baltic 46
13.5 ft
Grampian 46
12.0 ft
Morgan 46 Scheel
13.5 ft
Displacement
Seafarer 46 ★
27 lbs
Baltic 46
26 lbs
Grampian 46
25 lbs
Morgan 46 Scheel
30 lbs
Ballast
Seafarer 46 ★
11 lbs
Baltic 46
Grampian 46
9 lbs
Morgan 46 Scheel
3 lbs
Sail Area
Seafarer 46 ★
938 sq ft
Baltic 46
920 sq ft
Grampian 46
881 sq ft
Morgan 46 Scheel
876 sq ft
Performance
SA / Displacement (higher = more powerful)
Seafarer 46 ★
16.7
Baltic 46
16.5
Grampian 46
16.6
Morgan 46 Scheel
14.6
Comfort Ratio (higher = more comfortable offshore)
Seafarer 46 ★
48.2
Baltic 46
31.6
Grampian 46
38.3
Morgan 46 Scheel
35.1
Capsize Screening (lower = safer)
Seafarer 46 ★
1.47
Baltic 46
1.82
Grampian 46
1.64
Morgan 46 Scheel
1.74
Hull Speed
Seafarer 46 ★
7.5 kts
Baltic 46
8.3 kts
Grampian 46
7.7 kts
Morgan 46 Scheel
8.4 kts
Speed Number (higher = faster)
Seafarer 46 ★
1.0
Baltic 46
2.5
Grampian 46
1.4
Morgan 46 Scheel
1.9
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