Review of Mason 43

Basic specs.

The Mason 43 is a large sailboat designed by the Taiwanese maritime architect A. Mason.

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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.

Interior

The boat is equipped with 9 berths.

Keel

The Mason 43 is equipped with a long keel. A long keel provide a better directional stability than a similar boat with a fin keel; on the other hand, better directional stability means also that the boat is more difficult to handle in a harbour with less space.

The boat can only enter major marinas as the draft is about 1.85 - 1.95 meter (6.07 - 6.37 ft) dependent on the load. See immersion rate below.

Engine

Mason 43 is typically equipped with an inboard Perkins 4.108 diesel engine at 50.0 hp (37 kW).

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 Mason 43 is 1.58, indicating that this boat could - if evaluated by this formula alone - be accepted to participate in ocean races.

Immersion rate

The immersion rate is defined as the weight required to sink the boat a certain level. The immersion rate for Mason 43 is about 329 kg/cm, alternatively 1847 lbs/inch.
Meaning: if you load 329 kg cargo on the boat then it will sink 1 cm. Alternatively, if you load 1847 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.

L/B (Length Beam Ratio)

What is L/B (Length Beam Ratio)?

The l/b ratio for Mason 43 is 3.64.

Compared with other similar sailboats it is slimmer than 79% of all other designs. It seems that the designer has chosen a significantly more speedy hull design.

SA/D (Sail Area Displacement ratio)

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

The SA/D for Mason 43 with ISO 8666 reference sail is 15.3, with a 135% genua the SA/D is 18.1.

The SA/D ratio indicates that it is faster than 12% of all similar sailboat designs in light wind.

Maintenance

Rig

Dimensions of sail.

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	36.6 m	(120.0 feet)	14 mm	(0.55 inch)
Jib/genoa halyard	36.6 m	(120.0 feet)	14 mm	(0.55 inch)
Spinnaker halyard	36.6 m	(120.0 feet)	14 mm	(0.55 inch)
Jib sheet	13.4 m	(43.9 feet)	16 mm	(5/8 inch)
Genoa sheet	13.4 m	(43.9 feet)	16 mm	(5/8 inch)
Mainsheet	33.5 m	(109.7 feet)	16 mm	(5/8 inch)
Spinnaker sheet	29.4 m	(96.6 feet)	16 mm	(5/8 inch)
Cunningham	5.6 m	(18.5 feet)	14 mm	(0.55 inch)
Kickingstrap	11.3 m	(37.0 feet)	14 mm	(0.55 inch)
Clew-outhaul	11.3 m	(37.0 feet)	14 mm	(0.55 inch)

Boat owner's ideas

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

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Finally

We are always looking for new photos. If you can contribute with photos for Mason 43 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.