Review of Tümmler 135

Basic specs.

The Tümmler 135 is a large motorboat. The Tümmler 135 is built by the German yard Xylon-Werk Holzverarbeitungs-GmbH.

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Hull

The hull is made of plywood.

Interior

The boat is equipped with 4 berths, a galley and toilet facility.

Keel

Unknown keel type

The boat can enter even shallow marinas as the draft is just about 1.10 - 1.20 meter (3.61 - 3.91 ft) dependent on the load. See immersion rate below.

Engine

Tümmler 135 may be equipped with dual engines at 589 hp (439 kW)..

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 Tümmler 135 is about 352 kg/cm, alternatively 1975 lbs/inch.
Meaning: if you load 352 kg cargo on the boat then it will sink 1 cm. Alternatively, if you load 1975 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 Tümmler 135 is 3.46.

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 categorized as a Powerboat.

Maintenance

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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Finally

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References

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