Review of Tresfjord 29

Tresfjord 29 anno 1987. Min båd. fotos er taget i hals havn i limfjorden.

Basic specs.

The Tresfjord 29 is a motorboat designed by the maritime architect Jan Bjerke in the late seventies. Several hundred boats have been produced. The Tresfjord 29 is built by the Norwegian yard K. J. Skogens Båtbyggeri.

Looking for a new boat? Find a Tresfjord 29 or similar boat for sale

Hull

Both the hull and the deck is made of fibreglass. Generally, a hull made of fibreglass requires only a minimum of maintenance during the sailing season. And outside the sailing season, just bottom cleaning and perhaps anti-fouling painting once a year - a few hours of work, that's all.

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 2 cabins, 5-7 berths, a galley, toilet facility and 40 liter waste water capacity.

Engine

The boat is typically equipped with an inboard Perkins 4.236 M engine at 81.0 hp (60 kW).

The transmission is a shaft drive.

The fuel tank has a capacity of 260 liters (68 US gallons, 57 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.

Immersion rate

The immersion rate is defined as the weight required to sink the boat a certain level. The immersion rate for Tresfjord 29 is about 168 kg/cm, alternatively 942 lbs/inch.
Meaning: if you load 168 kg cargo on the boat then it will sink 1 cm. Alternatively, if you load 942 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 Tresfjord 29 is 3.09.

Compared with other similar motor boats it is slimmer than 66% of all other designs. It seems that the designer has chosen a slightly more speedy hull design.

Curiosities

Powerboat?

In Denmark, you are required to have achieved a 'powerboat driving license' in order to sail a powerboat.
In this context a boat is considered a powerboat if:

Danish definition of a powerboat

According to this definition this boat is not categorized as a Powerboat.
Though, if you install a motor of 80 kW (108 hp), then the boat will become a powerboat, and you will need a Danish 'powerboat driving license'

Maintenance

Boat owner's ideas

This section is reserved boat owner's changes, 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.

Finally

We are always looking for new photos. If you can contribute with photos for Tresfjord 29 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.