Noise and vibration training course upgraded

Noise and vibration onboard training course has been completely overhauled. Credit: NMT

A long-running course for marine designers and engineers on assessing noise and vibration has been “completely overhauled”, with a view to make it more engaging and interactive for designers, superintendents, surveyors, inspectors, suppliers, and consultants who deal with vibration and sound topics.

The Noise and Vibration Onboard training course is run by Netherlands Maritime Technology (NMT) and developed in partnership with independent research organisation TNO and Maritime Research Institute Netherlands (MARIN).

NMT said that nuisance caused by noise and vibrations on vessels is a key challenge in maritime design and engineering. Excessive vibrations can lead to equipment damage and crew fatigue. According to NMT, noise can have such a detrimental effect on board that clients in many newbuilding projects now require strict controls on sound levels. This means designers and engineers must be able to assess specialist advice and incorporate it into the design. An NMT spokesperson told SAS that its “completely overhauled” course now involves carrying out measurements on a pontoon on the Delftse Schie waterway.

Lex Vredeveldt, senior scientist naval architect at TNO’s structural dynamics research group said, “We have hired a pontoon on which we can place a small cabin. During the training course, we cause the pontoon to vibrate with an exciter and place sound sources on it. We then show how you can measure the response and what you can do to improve the situation. During the training, we will also make calculations related to the setup and solutions.”

He added that the new course gives a “solid introduction to the field without ever becoming boring”. He continued, “When we’re doing a project together onboard a vessel and working with sensors, excitation devices, and sound sources, participants actually become really enthusiastic. If you know what you’re doing in terms of physics, it’s easier to find the patience to get to know the relevant calculation methods, measurement methods, and experimental techniques.”

The course has not been validated externally, but is said to be taught by “top of the bill trainers” and is “well recognised in the maritime community”.