Review of Tripp 40

Basic specs.

The Tripp 40 is a large sailboat designed by the American maritime architect William Tripp, III in the early nineties. The Tripp 40 is built by the American yard Carroll Marine 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 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.

Engine

The boat is typically equipped with an inboard Yanmar diesel engine.

The fuel tank has a capacity of 95 liters (25 US gallons, 20 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 Tripp 40 is 2.08, indicating that this boat would not 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 7.9 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 Tripp 40 is about 263 kg/cm, alternatively 1473 lbs/inch.
Meaning: if you load 263 kg cargo on the boat then it will sink 1 cm. Alternatively, if you load 1473 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 Tripp 40 is 3.33.

Compared with other similar sailboats it is slimmer than 54% of all other designs. It seems that the designer has chosen a slightly more speedy hull design.

D/L (Displacement Length Ratio)

What is Displacement Length Ratio?

The DL-ratio for Tripp 40 is 129 which categorizes this boat among 'ultra light racers'.

92% 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 Tripp 40 with ISO 8666 reference sail is 24.0, with a 135% genua the SA/D is 27.4.

The SA/D ratio indicates that it is faster than 98% of all similar sailboat designs in light wind.

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	40.1 m	(131.7 feet)	12 mm	(1/2 inch)
Jib/genoa halyard	40.1 m	(131.7 feet)	12 mm	(1/2 inch)
Spinnaker halyard	40.1 m	(131.7 feet)	12 mm	(1/2 inch)
Jib sheet	12.3 m	(40.3 feet)	14 mm	(0.55 inch)
Genoa sheet	12.3 m	(40.3 feet)	14 mm	(0.55 inch)
Mainsheet	30.7 m	(100.6 feet)	14 mm	(0.55 inch)
Spinnaker sheet	27.0 m	(88.6 feet)	14 mm	(0.55 inch)
Cunningham	5.6 m	(18.5 feet)	12 mm	(1/2 inch)
Kickingstrap	11.3 m	(37.0 feet)	12 mm	(1/2 inch)
Clew-outhaul	11.3 m	(37.0 feet)	12 mm	(1/2 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

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References

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