Review of Domp 740

Basic specs.

The Domp 740 is a small sailboat designed in the late sixties. Several hundred boats have been produced. The Domp 740 is built by the Dutch yard Abma's Jachtwerf B.V..

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Hull

Both the hull and the deck is made of steel.

Interior

The boat is equipped with 4 berths.

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 boat can enter even shallow marinas as the draft is just about 1.20 - 1.30 meter (3.94 - 4.24 ft) dependent on the load. See immersion rate below.

Engine

Domp 740 is typically equipped with a Yamaha 8A engine at 8.0 hp (5 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 Domp 740 is 1.77, 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 Domp 740 is about 111 kg/cm, alternatively 624 lbs/inch.
Meaning: if you load 111 kg cargo on the boat then it will sink 1 cm. Alternatively, if you load 624 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 Domp 740 is 3.29.

Compared with other similar sailboats it is slimmer than 86% of all other designs. It seems that the designer has chosen a significantly more speedy hull design.

Maintenance

Rig

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
Jib sheet	7.4 m	(24.3 feet)	10 mm	(3/8 inch)
Genoa sheet	7.4 m	(24.3 feet)	10 mm	(3/8 inch)
Mainsheet	18.5 m	(60.7 feet)	10 mm	(3/8 inch)
Spinnaker sheet	16.3 m	(53.4 feet)	10 mm	(3/8 inch)

Boat owner's ideas

This section is reserved boat owner's changes, improvements, etc. Here you might find (or contribute with) inspiration for your boat.

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Finally

We are always looking for new photos. If you can contribute with photos for Domp 740 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.