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Review of Samurai 28


Basic specs.

sail specifications
The Samurai 28 is a sailboat designed by the maritime architect L. Francis Herreshoff together with Eldredge McGinnis also from in the late fifties. A few hundred boats have been produced. The Samurai 28 is built by the Japanese yard International Marine Japan Ltd..

Here we would have liked to show you nice photos of the Samurai 28.
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Looking for a new boat? Find a Samurai 28 or similar boat for sale

Hull
The hull is made of wood.

Rig
The boat equipped with a ketch rig.

Keel

The Samurai 28 is equipped with a long keel. A long keel provide a 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.

The boat can enter even shallow marinas as the draft is just about 1.19 - 1.29 meter (3.90 - 4.20 ft) dependent on the load. See immersion rate below.


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 Samurai 28 is 1.83, 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 6.3 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 Samurai 28 is about 132 kg/cm, alternatively 742 lbs/inch.
Meaning: if you load 132 kg cargo on the boat then it will sink 1 cm. Alternatively, if you load 742 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 Samurai 28 is 29.8.

Low High 90% 0 50 100
Comparing this ratio with similar sailboats show that it is more comfortable than 90% 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 Samurai 28 is 2.89.

Slim Wide 69% 0 50 100
Compared with other similar sailboats it is more spacy than 69% of all other designs. It seems that the designer has chosen a slightly more spacy hull design.


D/L (Displacement Length Ratio)

What is Displacement Length Ratio?

The DL-ratio for Samurai 28 is 397 which categorizes this boat among 'heavy cruisers'.

Heavy Light 4% 0 50 100
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 Samurai 28 with ISO 8666 reference sail is 16.2, with a 135% genua the SA/D is 19.2.

Low High 54% 0 50 100
The SA/D ratio indicates that it is faster than 54% of all similar sailboat designs in light wind.


Maintenance

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 21m2 (226 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.


Rig

Dimensions of sail for ketch 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
UsageLengthDiameter
Mainsail halyard 25.7 m(84.2 feet)8 mm(5/16 inch)
Jib/genoa halyard25.7 m(84.2 feet)8 mm(5/16 inch)
Spinnaker halyard25.7 m(84.2 feet)8 mm(5/16 inch)
Jib sheet 8.5 m(28.0 feet)10 mm(3/8 inch)
Genoa sheet8.5 m(28.0 feet)10 mm(3/8 inch)
Mainsheet 21.3 m(70.0 feet)10 mm(3/8 inch)
Spinnaker sheet18.8 m(61.6 feet)10 mm(3/8 inch)
Cunningham4.1 m(13.5 feet)8 mm(5/16 inch)
Kickingstrap8.2 m(27.0 feet)8 mm(5/16 inch)
Clew-outhaul8.2 m(27.0 feet)8 mm(5/16 inch)

Boat owner's ideas

This section shown boat owner's changes, improvements, etc. Here you might find inspiration for your boat.

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



Finally

We are always looking for new photos. If you can contribute with photos for Samurai 28 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.



References