The Hinckley 48 Sailboat
Specs & Key Performance Indicators

The Hinckley 48, a heavy displacement long keel sailboat, was designed by William H Trip and built in the USA by Henry Hinckley & Company.

A Hinckley 48 heavy displacement sailboat at anchorA Hinckley 48

Published Specification for the Hinckley 48

Underwater Configuration: Long keel with centreboard

Hull Material: GRP (Fibreglass)

Length Overall: 48'3" (14.7m)

Waterline Length: 34'2" (10'4")

Beam: 13.0" (4.0m)

Draft: Max 11'9" (3.6m), Min 5'2" (1.6m)

Rig Type: Yawl (also produced as a sloop)

Displacement: 36,000lb (16,330kg)

Designer: William H Trip

Builder: Henry Hinckley & Company (US)

Year First Built: 1965

Year Last Built: 1974

Number Built: 8

Published Design Ratios for the Hinckley 48

1. Sail Area/Displacement Ratio: 15.0

  • Less than 16 would be considered under-powered;
  • 16 to 20 would indicate reasonably good performance;
  • Over 20 suggests relatively high performance.

2. Ballast/Displacement Ratio: 29.4

  • Under 40: less stiff, less powerful
  • Over 40: stiffer, more powerful

3. Displacement/Length Ratio: 403

  • Under 100: Ultralight
  • 100 to 200: Light
  • 200 to 275: Moderate
  • 275 to 350: Heavy
  • Over 350: Ultraheavy

4. Comfort Ratio: 47.6

  • Under 20 indicates a lightweight racing boat
  • 20 to 30 indicates a coastal cruiser
  • 30 to 40 indicates a moderate offshore cruising boat
  • 40 to 50 indicates a heavy offshore boat
  • Over 50 indicates an extremely heavy offshore boat

5. Capsize Screening Formula: 1.6

  • Under 2.0 (the lower the better): Better suited for ocean passages
  • Over 2.0: Less suited for ocean passages

read more about these Key Performance Indicators...

Summary Analysis of the Design Ratios for the Hinckley 48

1. A Sail Area/Displacement Ratio of 15.0 suggests that the Hinckley 48 will need a stiff breeze to get her going. In light conditions, unless you've got plenty of time on your hands, motor-sailing may be the way to go.

2. A Ballast/Displacement Ratio of 29.4 means that Hinckley 48 will have a tendency to heel excessively in a gust, and she'll need to be reefed early to keep her sailing upright in a moderate breeze. 

3. A Displacement/Length Ratio of 403, tells us the Hinckley 48 is firmly in the ultra-heavy displacement category. Load her up as much as you like and her performance will be hardly affected. Few if any sailboats are built to this displacement category these days - but they remain popular with some long-distance sailors.

4. Ted Brewer's Comfort Ratio of 47.6 suggests that crew comfort of a Hinckley 48 in a seaway is similar to what you would associate with the motion of a heavy bluewater cruising boat. Pitching and rolling will be well damped - your cup of coffee on the salon table stands a reasonable chance of staying there in most conditions.

5. The Capsize Screening Formula (CSF) of 1.6 tells us that a Hinckley 48 would be a safer choice of sailboat for an ocean passage than one with a CSF of more than 2.0. 

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