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Review of Finnrose P38




Basic specs.

sail specifications
The Finnrose P38 is a sailboat designed by the British maritime architect Angus S. Primrose in the late sixties. A few hundred boats have been produced. The Finnrose P38 is built by the Finnish yard Ab Åbo Båtvarf - Turun Veneveistämö Oy.

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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.


Interior

The interior is like most other boats made of teak. Teak has the advantage of being naturally very oily and therefore water-repellent, which is suitable on boats.
The boat is equipped with one cabin, 6 berths, a galley, 260.0 liter fresh water capacity and toilet facility.


Rig

The Finnrose P38 is 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.


Keel

Unknown keel type

The keel is made of lead. Compared with iron, lead has the advantage of being 44% heavier, which allows a smaller keel and hence less water resistance and higher speed.

The boat can enter most marinas as the draft is just about 1.55 - 1.65 meter (5.09 - 5.39 ft) dependent on the load. See immersion rate below.


Engine

Finnrose P38 may be equipped with an inboard Yanmar diesel engine at 35 hp (26 kW). The speed is 8.0 knots.

The transmission is a saildrive.

The fuel tank has a capacity of 230.0 liters (60 US gallons, 50 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 Finnrose P38 is 1.77, indicating that this boat could - if evaluated by this formula alone - be accepted to participate in ocean races.


Immersion rate

The immersion rate is defined as the weight required to sink the boat a certain level. The immersion rate for Finnrose P38 is about 254 kg/cm, alternatively 1426 lbs/inch.
Meaning: if you load 254 kg cargo on the boat then it will sink 1 cm. Alternatively, if you load 1426 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 Finnrose P38 is 3.39.

Wide Slim 66% 0 50 100
Compared with other similar sailboats it is slimmer than 66% of all other designs. It seems that the designer has chosen a slightly more speedy hull design.


Ballast Ratio

What is a Ballast Ratio?

The ballast ratio for Finnrose P38 is 36%.

Low High 31% 0 50 100
This ballast ratio shows a righting moment that is higher than 31% of all similar sailboat designs. A righting moment (ability to resist heeling) just below average.


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 11.3 m(37.2 feet)14 mm(0.55 inch)
Genoa sheet11.3 m(37.2 feet)14 mm(0.55 inch)
Mainsheet 28.4 m(93.1 feet)14 mm(0.55 inch)
Spinnaker sheet25.0 m(81.9 feet)14 mm(0.55 inch)

Boat owner's ideas

This section is reserved boat owner's modifications, improvements, etc. Here you might find (or contribute with) inspiration for your boat.

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Finally

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If you have any comments to the review, improvement suggestions, or the like, feel free to contact us. Criticism helps us to improve.



References