The Moody 41 Classic Sailboat
Specs & Key Performance Indicators

The Moody 41 Classic, a moderate displacement fractional sloop, was designed by Bill Dixon and built in the UK by A. H. Moody & Son Ltd.

A Moody 41 Classic sailboat under full main and working jibA Moody 41 Classic sporting a self-tacking jib and a Solent Rig

Published Specification for the Moody 41 Classic

Underwater Profile: Bulb fin L-shaped keel & spade rudder

Hull Material: GRP (Fibreglass)

Length Overall: 41'8" (12.7m)

Waterline Length: 39'9" (xm)

Beam: 13'2" (4.0m)

Draft: 6'6" (2.0m)

Rig Type: Solent-Rigged fractional sloop

Displacement: 21,605lb (9,800kg)

Ballast: 6,063lb (2,705kg)

Designer: Bill Dixon

Builder: A. H. Moody & Son Ltd (UK)

Year First Built: 2009

Moody 41 Classic sailboat interior layout optionsInterior layout options for the Moody 41 Classic sailboat

Read more about the latest sailboats in the Moody range...

Published Design Ratios for the Moody 41 Classic

1. Sail Area/Displacement Ratio: 20.6

  • 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: 28.1

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

3. Displacement/Length Ratio: 211

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

4. Comfort Ratio: 28.9

  • 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: 1.9

  • 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 Moody 41 Classic

1. A Sail Area/Displacement Ratio of 20.6 suggests that, in the right hands, the Moody 41 Classic will have enough performance to leave most other sailboats of similar waterline length well astern. 

2. A Ballast/Displacement Ratio of 28.1 would usually mean that the Moody 41 Classic would have a tendency to heel uncomfortably in a gust, and need to be reefed early to keep her sailing upright in a moderate breeze.

However, as she has much of her ballast concentrated in a bulb at the foot of her keel, she's likely to be considerably stiffer than her published Ballast/Displacement Ratio might suggest.

3. A Displacement/Length Ratio of 211 tells us the Moody 41 Classic is a moderate displacement cruiser, which means she'll carry all your cruising gear without it having a dramatic effect on her performance. Most of today's sailboats intended for offshore cruising fall into this displacement category.

4. Ted Brewer's Comfort Ratio of 28.9 suggests that crew comfort of a Moody 41 Classic in a seaway is similar to what you would associate with the motion of a coastal cruiser with moderate stability, which is not the best of news for anyone prone to seasickness. 

5. The Capsize Screening Formula (CSF) of 1.9 indicates that a Moody 41 Classic would be a safer choice of sailboat for an ocean passage than one with a CSF of more than 2.0. 

Other sailboats in the Moody range include:

A Moody 33S sailboat at anchorThe Moody 33S

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