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Seafarer 45
Designer: Sparkman & Stephens  ·  Builder: Werf Gusto (Nl)  ·  First built: 1961
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About the Seafarer 45

A capable and comfortable offshore cruiser, the Seafarer 45 represents the kind of substantial blue-water sailboat that serious passage-makers have long sought out. Built by Seafarer Yachts, an American manufacturer that produced a range of popular production sailboats throughout the 1960s and 1970s, the 45 sits at the larger end of the Seafarer lineup and was designed with extended ocean voyaging in mind. With its full keel or modified underbody configuration typical of cruising designs from that era, the Seafarer 45 offers the directional stability and sea-kindly motion that offshore sailors value when miles from port. The generous interior volume expected of a boat this size makes it well suited for liveaboard use or lengthy passages with a small crew. Prospective buyers researching this model should approach it as a vintage cruising platform, meaning careful attention to refit condition, rigging, and systems will be essential. When well-maintained, the Seafarer 45 can deliver a rewarding and capable sailing experience for those drawn to traditional bluewater cruising rather than high-performance sailing.

Core Dimensions
LOA (Length Overall) 45.08 ft / 13.74 m
LWL (Waterline Length) 30.33 ft / 9.24 m
Beam 11.00 ft / 3.35 m
Max Draft 6.42 ft / 1.96 m
Displacement 25,000.00 lb / 11,340 kg
Ballast 9,500.00 lb / 4,309 kg
Ballast Type Lead
Design & Construction
Hull Type Fin Keel
Rigging Type Masthead Sloop
Construction FG
Designer Sparkman & Stephens
Builder Werf Gusto (NL)
First Built 1961
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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
 156
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
 38.0
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
 400.01
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. 7.15 pounds/inch
Rig Dimensions
I (Foretriangle Height) 16.87
J (Foretriangle Base) 16.25 ft / 4.95 m
P (Mainsail Luff) 898.00 ft² / 83.43 m²
E (Mainsail Foot) Gray Marine
Engine & Accommodations
Fuel Capacity 55 gals / 208 L
Water Capacity 250 gals / 946 L
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