Review of Hinckley 48

Basic specs.

The Hinckley 48 is a large sailboat designed by the American maritime architect William H. Tripp in the mid sixties. The Hinckley 48 is built by the American yard Henry R. Hinckley & Co..

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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 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.

Engine

The boat is typically equipped with a Westerbeke diesel engine.

The fuel tank has a capacity of 378 liters (99 US gallons, 83 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 Hinckley 48 is 1.57, indicating that this boat could - if evaluated by this formula alone - 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 7.8 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 Hinckley 48 is about 276 kg/cm, alternatively 1548 lbs/inch.
Meaning: if you load 276 kg cargo on the boat then it will sink 1 cm. Alternatively, if you load 1548 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.

Motion Comfort Ratio

What is Motion Comfort Ratio (MCR)?

The Motion Comfort Ratio for Hinckley 48 is 47.3.

Comparing this ratio with similar sailboats show that it is more comfortable than 92% of all similar sailboat designs. This is a comfort value significantly above average.

L/B (Length Beam Ratio)

What is L/B (Length Beam Ratio)?

The l/b ratio for Hinckley 48 is 3.71.

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.

D/L (Displacement Length Ratio)

What is Displacement Length Ratio?

The DL-ratio for Hinckley 48 is 402 which categorizes this boat among 'heavy cruisers'.

4% of all similar sailboat designs are categorized as heavier. A heavy displacement combined with smaller water plane area has lower acceleration and is more comfortable.

SA/D (Sail Area Displacement ratio)

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

The SA/D for Hinckley 48 with ISO 8666 reference sail is 14.9, with a 135% genua the SA/D is 17.6.

The SA/D ratio indicates that it is faster than 5% of all similar sailboat designs in light wind.

Maintenance

Rig

Dimensions of sail for masthead 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	39.5 m	(129.5 feet)	14 mm	(0.55 inch)
Jib/genoa halyard	39.5 m	(129.5 feet)	14 mm	(0.55 inch)
Spinnaker halyard	39.5 m	(129.5 feet)	14 mm	(0.55 inch)
Jib sheet	14.7 m	(48.3 feet)	16 mm	(5/8 inch)
Genoa sheet	14.7 m	(48.3 feet)	16 mm	(5/8 inch)
Mainsheet	36.8 m	(120.7 feet)	16 mm	(5/8 inch)
Spinnaker sheet	32.4 m	(106.2 feet)	16 mm	(5/8 inch)
Cunningham	6.1 m	(20.1 feet)	14 mm	(0.55 inch)
Kickingstrap	12.3 m	(40.2 feet)	14 mm	(0.55 inch)
Clew-outhaul	12.3 m	(40.2 feet)	14 mm	(0.55 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.