Houseboat stability test - how it went

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Writer: Helena Bergström

You may recall that we decided to do a stability test of the houseboat after the remodelling? But I think we forgot to tell you about the results ... It was a proper test that started when the boat was on land. A number of guys came here with measurement equipment, scanned the boat with a laser and got the two million measuring points, which was then entered into a computer programme.

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About our houseboat

The houseboat was originally built as a passenger sloop, presumably with the capacity to carry quite a few passengers. But then it became a houseboat, with a much larger living area built on top of the hull. And now, in the latest remodelling, we have made the superstructure slightly higher and also wider. So what does that mean for stability?

Admittedly, the boat will not be sailing the high seas, but will remain moored at a relatively sheltered jetty. Furthermore, there will hardly ever be more than 10 people on board at any one time. Nevertheless, we would like to know that it will remain upright even in stormy weather...

Stability test company

We hired a company called Saltech, which the marina recommended we contact. They came with measuring equipment to scan the boat while it was on land. They took lots of measurements, which were entered into a computer programme and then used to calculate the stability.

Step 2 was carried out with the boat in the water. Large drums of water (equivalent to the weight of six people) were placed on different sides of the boat and the slope was measured. The final step included calculations in the computer programme.

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Step 1 was completed while the houseboat was on land.

The result

What is the result? Well, the houseboat initially rocks relatively easily, but then stabilises.

"The moment at which the houseboat wants to right itself is constantly increasing at the angles of heel that can occur in normal use. Total loss of stability only occurs at 56 degrees of heel. The overall assessment of stability is that the risk of capsizing is very low."

stability test of a houseboat

In other words, we have nothing to worry about. Doing this test was not exactly cheap, but it feels good to have done it properly and now we have everything in black and white in an 18-page report ...

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