Review of Aerodyne 38

Basic specs.

sail specifications
The Aerodyne 38 is a sailboat designed by the maritime architect Rodger Martin together with Steve Koopman in the early 2000. The Aerodyne 38 is built by the South African yard Aerodyne Marine.

Here we would have liked to show you nice photos of the Aerodyne 38.
If you have a photo you would like to share: Upload Image

Looking for a new boat? Find a Aerodyne 38 or similar boat for sale


The hull is a double hull which improves the indoor climate. Especially when the water is colder than the air in the cabin, then the double hull insulates against cold water and reduce the condense water in the cabin.


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.


The Aerodyne 38 is equipped with a fin keel. The fin keel is the most common keel and provides splendid manoeuvrability. The downside is that it has less directional stability than a long keel.

The boat can only enter major marinas as the draft is about 2.35 - 2.45 meter (7.71 - 8.01 ft) dependent on the load. See immersion rate below.


The boat is typically equipped with an inboard Yanmar 3GM diesel engine at 27.0 hp (20 kW), which gives a max speed about 6.7 knots.

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 Aerodyne 38 is 2.32, 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 7.8 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 Aerodyne 38 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 Aerodyne 38 is 16.1.

Low High 4% 0 50 100
Comparing this ratio with similar sailboats show that it is more comfortable than 4% 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 Aerodyne 38 is 2.89.

Slim Wide 85% 0 50 100
Compared with other similar sailboats it is more spacy than 85% of all other designs. It seems that the designer has chosen a significantly more spacy hull design.

Ballast Ratio

What is a Ballast Ratio?

The ballast ratio for Aerodyne 38 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.

D/L (Displacement Length Ratio)

What is Displacement Length Ratio?

The DL-ratio for Aerodyne 38 is 125 which categorizes this boat among 'ultra light racers'.

Heavy Light 93% 0 50 100
93% 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 Aerodyne 38 with ISO 8666 reference sail is 25.3, with a 135% genua the SA/D is 29.4.

Low High 99% 0 50 100
The SA/D ratio indicates that it is faster than 99% of all similar sailboat designs in light wind.

Over- / underrigged

Low High 96% 0 50 100
The Aerodyne 38 has more rig than 96% of all similar sailboats, which indicates that the boat is significantly overrigged.


Bottom Paint

When buying anti-fouling bottom paint, it's nice to know how much to buy. The surface of the wet bottom is about 49m2 (527 ft2).
Based on this, your favourite maritime shop can tell you the quantity you need.

Note: If you use a paint roller you will need more paint than if you use a paintbrush.


Dimensions of sail for fractional rig.

mainsail specifications headsail specifications

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
Mainsail halyard 40.7 m(133.5 feet)12 mm(1/2 inch)
Jib/genoa halyard40.7 m(133.5 feet)12 mm(1/2 inch)
Spinnaker halyard40.7 m(133.5 feet)12 mm(1/2 inch)
Jib sheet 11.5 m(37.6 feet)14 mm(0.55 inch)
Genoa sheet11.5 m(37.6 feet)14 mm(0.55 inch)
Mainsheet 28.7 m(94.0 feet)14 mm(0.55 inch)
Spinnaker sheet25.2 m(82.7 feet)14 mm(0.55 inch)
Cunningham5.0 m(16.5 feet)12 mm(1/2 inch)
Kickingstrap10.1 m(33.0 feet)12 mm(1/2 inch)
Clew-outhaul10.1 m(33.0 feet)12 mm(1/2 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.

Do you have changes/improvements you would like to share? Upload a photo and describe what you have done.


We are always looking for new photos. If you can contribute with photos for Aerodyne 38 it would be a great help.

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