Review of Moody 43 Eclipse

Basic specs.

The Moody 43 Eclipse is a large sailboat designed by the British maritime architect Bill Dixon in the late eighties. The Moody 43 Eclipse is built by the British yard Marine Projects Ltd..

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Hull

The hull is made of fibreglass. Generally, a hull made of fibreglass requires only a minimum of maintenance during the sailing season.

Rig

The boat equipped with a masthead rig. The advantage of a masthead rig is its simplicity and the fact that a given sail area - compared with a fractional rig - can be carried lower and thus with less heeling moment.

Keel

The Moody 43 Eclipse is equipped with a fin keel. The fin keel is the most common keel and provides splendid manoeuvrability. The downside is that it has less directional stability than a long keel.

The boat can enter even shallow marinas as the draft is just about 1.47 - 1.57 meter (4.82 - 5.12 ft) dependent on the load. See immersion rate below.

Engine

The boat is typically equipped with an inboard Perkins M80 T diesel engine at 78.0 hp (58 kW), which gives a max speed about 8.2 knots.

The fuel tank has a capacity of 341.0 liters (90 US gallons, 75 imperial gallons).

Sailing characteristics

This section covers widely used rules of thumb to describe the sailing characteristics. Please note that even though the calculations are correct, the interpretation of the results might not be valid for extreme boats.

Stability and Safety

What is Capsize Screening Formula (CSF)?

The capsize screening value for Moody 43 Eclipse is 1.97, indicating that this boat could - if evaluated by this formula alone - be accepted to participate in ocean races.

Theoretical Maximum Hull Speed

What is Theoretical Maximum Hull Speed?

The theoretical maximal speed of a displacement boat of this length is 8.0 knots. The term "Theoretical Maximum Hull Speed" is widely used even though a boat can sail faster. The term shall be interpreted as above the theoretical speed a great additional power is necessary for a small gain in speed.

Immersion rate

The immersion rate is defined as the weight required to sink the boat a certain level. The immersion rate for Moody 43 Eclipse is about 314 kg/cm, alternatively 1762 lbs/inch.
Meaning: if you load 314 kg cargo on the boat then it will sink 1 cm. Alternatively, if you load 1762 lbs cargo on the boat it will sink 1 inch.

Sailing statistics

This section is statistical comparison with similar boats of the same category. The basis of the following statistical computations is our unique database with more than 26,000 different boat types and 350,000 data points.

Motion Comfort Ratio

What is Motion Comfort Ratio (MCR)?

The Motion Comfort Ratio for Moody 43 Eclipse is 27.6.

Comparing this ratio with similar sailboats show that it is more comfortable than 34% of all similar sailboat designs. This comfort value is just below average.

L/B (Length Beam Ratio)

What is L/B (Length Beam Ratio)?

The l/b ratio for Moody 43 Eclipse is 3.03.

Compared with other similar sailboats it is more spacy than 82% of all other designs. It seems that the designer has chosen a significantly more spacy hull design.

Ballast Ratio

What is a Ballast Ratio?

The ballast ratio for Moody 43 Eclipse is 38%.

This ballast ratio shows a righting moment that is higher than 46% of all similar sailboat designs. A righting moment (ability to resist heeling) just below average.

D/L (Displacement Length Ratio)

What is Displacement Length Ratio?

The DL-ratio for Moody 43 Eclipse is 218 which categorizes this boat among 'light crusers & offshore racers'.

62% of all similar sailboat designs are categorized as heavier. A light displacement requires less sailarea and has higher accellerations.

SA/D (Sail Area Displacement ratio)

What is SA/D (Sail Area Displacement ratio)?

The SA/D for Moody 43 Eclipse with ISO 8666 reference sail is 15.6, with a 135% genua the SA/D is 18.6.

The SA/D ratio indicates that it is faster than 18% of all similar sailboat designs in light wind.

Over- / underrigged

The Moody 43 Eclipse has more rig than 82% of all similar sailboats, which indicates that the boat is significantly overrigged.

Maintenance

Bottom Paint

When buying anti-fouling bottom paint, it's nice to know how much to buy. The surface of the wet bottom is about 47m² (505 ft²).
Based on this, your favourite maritime shop can tell you the quantity you need.

Note: If you use a paint roller you will need more paint than if you use a paintbrush.

Rig

Dimensions of sail for masthead rig.

Are your sails worn out? You might find your next sail here: Sails for Sale

If you need to renew parts of your running rig and is not quite sure of the dimensions, you may find the estimates computed below useful.

**Guiding dimensions of running rig**
Usage	Length		Diameter
Mainsail halyard	36.3 m	(119.3 feet)	12 mm	(1/2 inch)
Jib/genoa halyard	36.3 m	(119.3 feet)	12 mm	(1/2 inch)
Spinnaker halyard	36.3 m	(119.3 feet)	12 mm	(1/2 inch)
Jib sheet	12.9 m	(42.5 feet)	14 mm	(0.55 inch)
Genoa sheet	12.9 m	(42.5 feet)	14 mm	(0.55 inch)
Mainsheet	32.4 m	(106.2 feet)	14 mm	(0.55 inch)
Spinnaker sheet	28.5 m	(93.5 feet)	14 mm	(0.55 inch)
Cunningham	4.7 m	(15.5 feet)	12 mm	(1/2 inch)
Kickingstrap	9.4 m	(31.0 feet)	12 mm	(1/2 inch)
Clew-outhaul	9.4 m	(31.0 feet)	12 mm	(1/2 inch)

Boat owner's ideas

This section shown boat owner's changes, improvements, etc. Here you might find inspiration for your boat.

Do you have changes/improvements you would like to share? Upload a photo and describe what to look for.

Finally

We are always looking for new photos. If you can contribute with photos for Moody 43 Eclipse it would be a great help.

If you have any comments to the review, improvement suggestions, or the like, feel free to contact us. Criticism helps us to improve.

References

[Ref 1]: ISO 8666 Small craft — Principal data.
[Ref 3]: ISO 12215-5 Small craft — Hull construction and scantlings.