Review of First IMS 40.7

Basic specs.

The First IMS 40.7 is a large sailboat designed by the maritime architect Bruce Farr. The First IMS 40.7 is built by the French yard Bénéteau.

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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 fractional rig. A fractional rig has smaller headsails which make tacking easier, which is an advantage for cruisers and racers, of course. The downside is that having the wind from behind often requires a genaker or a spinnaker for optimal speed.

Keel

The boat can only enter major marinas as the draft is about 2.00 - 2.10 meter (6.56 - 6.86 ft) dependent on the load. See immersion rate below.

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.

Immersion rate

The immersion rate is defined as the weight required to sink the boat a certain level. The immersion rate for First IMS 40.7 is about 313 kg/cm, alternatively 1755 lbs/inch.
Meaning: if you load 313 kg cargo on the boat then it will sink 1 cm. Alternatively, if you load 1755 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 First IMS 40.7 is 3.08.

Compared with other similar sailboats it is more spacy than 73% of all other designs. It seems that the designer has chosen a slightly more spacy hull design.

Maintenance

Rig

Dimensions of sail for fractional 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	41.4 m	(136.0 feet)	12 mm	(1/2 inch)
Jib/genoa halyard	41.4 m	(136.0 feet)	12 mm	(1/2 inch)
Spinnaker halyard	41.4 m	(136.0 feet)	12 mm	(1/2 inch)
Jib sheet	12.0 m	(39.4 feet)	14 mm	(0.55 inch)
Genoa sheet	12.0 m	(39.4 feet)	14 mm	(0.55 inch)
Mainsheet	30.0 m	(98.4 feet)	14 mm	(0.55 inch)
Spinnaker sheet	26.4 m	(86.6 feet)	14 mm	(0.55 inch)
Cunningham	5.8 m	(19.1 feet)	12 mm	(1/2 inch)
Kickingstrap	11.6 m	(38.2 feet)	12 mm	(1/2 inch)
Clew-outhaul	11.6 m	(38.2 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.

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Finally

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References

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