Review of Sea Wolf 41

Basic specs.

The Sea Wolf 41 is a large sailboat designed by the American maritime architect William Garden in the late sixties. The Sea Wolf 41 is built by the Taiwanese yard Pacific Far East.

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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.
Some boats has a hull made of Wood.

Keel

The Sea Wolf 41 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.

Engine

The boat is typically equipped with an inboard Perkins diesel engine.

The fuel tank has a capacity of 378.0 liters (99 US gallons, 83 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 Sea Wolf 41 is 1.60, 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 7.5 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 Sea Wolf 41 is about 239 kg/cm, alternatively 1343 lbs/inch.
Meaning: if you load 239 kg cargo on the boat then it will sink 1 cm. Alternatively, if you load 1343 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 Sea Wolf 41 is 45.0.

Comparing this ratio with similar sailboats show that it is more comfortable than 98% 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 Sea Wolf 41 is 3.34.

Compared with other similar sailboats it is slimmer than 54% 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 Sea Wolf 41 is 32%.

This ballast ratio shows a righting moment that is higher than 15% 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 Sea Wolf 41 is 395 which categorizes this boat among 'heavy cruisers'.

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.

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**
Usage	Length		Diameter
Jib sheet	12.4 m	(40.7 feet)	14 mm	(0.55 inch)
Genoa sheet	12.4 m	(40.7 feet)	14 mm	(0.55 inch)
Mainsheet	31.0 m	(101.7 feet)	14 mm	(0.55 inch)
Spinnaker sheet	27.3 m	(89.5 feet)	14 mm	(0.55 inch)

Boat owner's ideas

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

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Finally

We are always looking for new photos. If you can contribute with photos for Sea Wolf 41 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

[Ref 1]: ISO 8666 Small craft — Principal data.
[Ref 3]: ISO 12215-5 Small craft — Hull construction and scantlings.