Review of Bristol 51.1 (CB)

Basic specs.

The Bristol 51.1 (CB) is a large sailboat designed by the German maritime architect Dieter Empacher. The Bristol 51.1 (CB) is built by the American yard Bristol Yachts Inc..

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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.

Keel

The boat can enter most marinas as the draft is just about 1.75 - 1.85 meter (5.74 - 6.04 ft) dependent on the load. See immersion rate below.

Engine

The boat is typically equipped with an engine.

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 Bristol 51.1 (CB) is about 494 kg/cm, alternatively 2768 lbs/inch.
Meaning: if you load 494 kg cargo on the boat then it will sink 1 cm. Alternatively, if you load 2768 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 Bristol 51.1 (CB) is 3.24.

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.

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	15.5 m	(50.8 feet)	16 mm	(5/8 inch)
Genoa sheet	15.5 m	(50.8 feet)	16 mm	(5/8 inch)
Mainsheet	38.7 m	(126.9 feet)	16 mm	(5/8 inch)
Spinnaker sheet	34.0 m	(111.7 feet)	16 mm	(5/8 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.