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Review of Pemaquid 25


Basic specs.

boat specifications
The Pemaquid 25 is a small sailboat designed by the maritime architect A. K. Carter in the late sixties. The Pemaquid 25 is built by Jarvis Newman.

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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. And outside the sailing season, just bottom cleaning and perhaps anti-fouling painting once a year - a few hours of work, that's all.

Keel
The boat has a long keel which means better directional stability than a similar boat with a fin keel; on the other hand, better directional stability means also that the boat is more difficult to handle in a harbour with less space.

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 Pemaquid 25 is 1.81, 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 6.1 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 Pemaquid 25 is about 113 kg/cm, alternative 633 lbs/inch.
Meaning: if you load 113 kg cargo on the boat then it will sink 1 cm. Alternative, if you load 633 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 22,000 boat types and 350,000 data points.

Motion Comfort Ratio
What is Motion Comfort Ratio (MCR)?
The Motion Comfort Ratio for Pemaquid 25 is 27.3.

Low High 95% 0 50 100
Comparing this ratio with similar sailboats show that it is more comfortable than 95% of all similar sailboat designs. A comfort value significantly above average.

L/B (Length Beam Ratio)
What is L/B (Length Beam Ratio)?
The l/b ratio for Pemaquid 25 is 2.89.

Slim Wide 62% 0 50 100
Compared with other similar sailboats it is more spacy than 62% of all other designs. It seems that the designer has chosen a slightly more spacy hull design.

Ballast Ratio
What is a Ballast Ratio?
The ballast ratio for Pemaquid 25 is 28%.

Low High 10% 0 50 100
This ballast ratio shows a righting moment that is higher than 10% of all similar sailboat designs. A righting moment (ability to resist heeling) significantly below average.

D/L (Displacement Length Ratio)
What is Displacement Length Ratio?
The DL-ratio for Pemaquid 25 is 337 which categorizes this boat among 'heavy cruisers'.

Heavy Light 10% 0 50 100
10% 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.

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
UsageLengthDiameter
Jib sheet 7.6 m(25.0 feet)10 mm(3/8 inch)
Genoa sheet 7.6 m(25.0 feet)10 mm(3/8 inch)
Mainsheet 19.0 m(62.5 feet)10 mm(3/8 inch)
Spinnaker sheet16.8 m(55.0 feet)10 mm(3/8 inch)


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References