Review of Agari 39

Basic specs.

sail specifications
The Agari 39 is a large sailboat designed by the Dutch maritime architect E. G. van de Stadt.

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The boat is equipped with 5 berths.


The boat is typically equipped with an inboard diesel engine at 48.0 hp (35 kW), which gives a max speed about 7.9 knots.

The transmission is a shaft drive. A shaft drive will in the long run require less maintenence than other types of drive e.g. a sail drive.

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 Agari 39 is 2.11, 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 8.0 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 Agari 39 is about 294 kg/cm, alternatively 1650 lbs/inch.
Meaning: if you load 294 kg cargo on the boat then it will sink 1 cm. Alternatively, if you load 1650 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 Agari 39 is 20.7.

Low High 14% 0 50 100
Comparing this ratio with similar sailboats show that it is more comfortable than 14% of all similar sailboat designs. This is a comfort value significantly below average.

L/B (Length Beam Ratio)

What is L/B (Length Beam Ratio)?

The l/b ratio for Agari 39 is 3.00.

Slim Wide 79% 0 50 100
Compared with other similar sailboats it is more spacy than 79% of all other designs. It seems that the designer has chosen a significantly more spacy hull design.

D/L (Displacement Length Ratio)

What is Displacement Length Ratio?

The DL-ratio for Agari 39 is 146 which categorizes this boat among 'ultra light racers'.

Heavy Light 88% 0 50 100
88% of all similar sailboat designs are categorized as heavier. A light displacement requires less sailarea and has higher accellerations.



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
Jib sheet 12.0 m(39.3 feet)14 mm(0.55 inch)
Genoa sheet 12.0 m(39.3 feet)14 mm(0.55 inch)
Mainsheet 30.0 m(98.3 feet)14 mm(0.55 inch)
Spinnaker sheet26.4 m(86.5 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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