This FAQ is especially for yacht owners and their guests, particularly those who, during their vacations, have experienced annoying and nerve-wracking situations on board: annoying hums, strange and unwanted noises reaching the cabins—perhaps at night—that haven’t been resolved despite corrective actions. Is there a solution?
We had two ways to approach this topic: either give you a boring, very general, and technical explanation on how to solve the problem, or tell you about one of our recent experiences. We decided for the latter: the protagonist of this story is a beautiful 56-meter sailing yacht.
Background
Last year, in October our yacht was docked at a famous Spanish shipyard, ready for winter maintenance activities. This year, there was a specific request directly from the owner: solve the cause of his INSOMNIA and that of his guests.
The shipyard’s project manager is a very expert in the subject: he knows that classic soundproofing panels aren’t enough to solve the ‘NOISE’ problem the owner was complaining about. To delete it at the root, it is necessary to isolate the cause, and to do that, he has to conduct an analysis of the yacht’s vibro-acoustic behavior (in other words, carry out a campaign of noise and vibration measurements to identify the problem cause).
Noise and vibration campaign: what is it?
It’s a precise operation involving measurement and data analysis across the entire speed range of the sailing yacht (SY), using sensitive instruments like:
- Multichannel data acquisition system with dedicated software
- Piezoelectric accelerometer
- Tachometer
- Microphone
Our technician, who is in charge of this project, not only has 25 years of experience in the field but is also a naval engineer accredited as a category III vibration expert according to ISO 18436 by the VIBRATION INSTITUTE. So, he knows his job!
Flashforward to June 2024: finally, silence!
A few months have passed, and something significant happened after the first round of measurements and the analysis carried out by the VULKAN technician. The figure we show below highlights the measurement points investigated on board, and the table shows the noise levels recorded before and after the corrective action was taken.
What happened?
To find out, you’ll have to wait until next month!
If you have questions and would like to discuss specific topics, contact us: [email protected]
Vulkan auscultates and supports
– FAQ n.1 What is a hybrid vessel?
– FAQ n.2 Is a yacht always COMFORTable?
– FAQ n.3 Does rubber get old?
– FAQ n.4 What does COMFORT means?
– FAQ n.5 Is there only 1 hybrid?
– FAQ n.5 BIS Is there only one hybrid?
– FAQ n.6 Batteries on a trip toward safety, autonomy and sustainability
– FAQ n.7. Are you yachting comfortably?
– FAQ n.8. Noise is keeping me awake: what can I do?
– FAQ n.9. To erase noise, you need rubber!
– FAQ n.10. If you don’t think about maintenance… your yacht will do it for you (when you least expect it!)
– FAQ n.11. Do you think of maintenance?
(Vulkan auscultates and supports, FAQ n.8. Noise is keeping me awake: what can I do? – Barchemagazine.com – September 2024)
