Sailmaster 45 Sailboat Review, Specs, and Listings

Sparkman & Stephens·1963·~3 hulls·Werf Gusto
Approximate drawing

Hover a measurement to read its value

Hull Type
Monohull · fin
Rig
Masthead Sloop
LOA
45.08' · 13.74 m
Disp.
28,000 lbs · 12,701 kg
First year
1963

The Sailmaster 45 is a 45foot masthead sloop drawn by Sparkman & Stephens in the early 1960s and built in the Netherlands by Werf Gusto, with only a few hulls completed. The hull is fiberglass with a long lead keel carrying a 32 percent ballast ratio. At a displacementlength ratio of 449 it is an ultra heavy cruiser; Motion Comfort Ratio is 50.8 and immersion rate near 1,161 lbs/inch. Wetted surface is 398 sq ft and lengthtobeam ratio 4.10. Capsize screening is 1.45. The boat can only enter major marinas as the draft is about 6.43–6.73 ft dependent on load.

Measurements

Dimensions 01

Length Overall
45.08 ft
Length on deck
Waterline Length
30.33 ft
Beam
11 ft
Draft
6.42 ft
Maximum Headroom
Air Draft

Construction & hull 02

Construction
Fiberglass
Hull Type
Monohull
Keel Type
Fin
Rudder
1× Skeg-Hung
Ballast
9,000 lbs (Lead)
Displacement
28,000 lbs
Water Capacity
160 gal
Fuel Capacity
60 gal

Rig & sails 03

Rigging Type
Masthead Sloop
Mainsail luff
Mainsail foot
Foretriangle height
Foretriangle base
Forestay Length (estimated)
Sail Area
941 sqft

Calculations 04

Sail Area to Displacement Ratio
16.32
Ballast to Displacement Ratio
32.14
Displacement to Length Ratio
448.02
Comfort Ratio
51.07
Capsize Screening Ratio
1.45
Hull Speed
7.38 kn

Rig and Handling

The masthead rig has a sail-area/displacement ratio of 16.33. Mainsheet is 112.7 ft of 5/8-in line; jib and genoa sheets 45.1 ft; spinnaker sheet 99.2 ft, all 16 mm. Hull speed is 7.4 knots on a 30.3-ft waterline, and the long-keel configuration trades quick turning for tracking steadiness in a seaway.

Accommodations

Beam is 11 ft. Tankage is 60 gal diesel and 160 gal water for the 28,000-lb hull; an inboard Westerbeke diesel may be fitted.

Known Issues

Draft of 6.43–6.73 ft restricts the boat to major marinas. Ultra-heavy displacement makes any osmotic or structural repair costly to haul out.

Refits and Ownership

Low production makes each hull effectively custom. The Westerbeke, where fitted, is the dominant mechanical item; long-keel lead construction favors heavy ground-tackle upgrades over performance modification.

The Verdict

An obscure, heavily built Sparkman & Stephens cruiser rewarding seakindliness over speed, with old-school long-keel lead hull and narrow beam.

Pros

  • Conservative bluewater numbers: capsize 1.45, comfort 50.8
  • Lead long keel, 32% ballast ratio
  • 160-gal water, 60-gal fuel

Cons

  • Ultra-heavy (DL 449) limits speed
  • Draft 6.4–6.7 ft restricts marinas
  • Only a few built; no model-specific parts

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