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Frans Hendrik Lafeber

Team Leader Ships

Data Science & Process Optimisation

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Introduction

Frans Hendrik is Teamleader of the Ships Data Science & Process Optimisation team. He is also involved in (research) projects dealing with cavitation, propeller-induced pressure fluctuations and underwater radiated noise.

Expertise areas
Publications
Paper
Calibration of flush-mounted hydrophones using various signal types

Oct 9, 2019

Measurements of cavitation-induced underwater radiated noise (URN) are carried out on a regular basis in MARIN’s Depressurised Wave Basin (DWB). The ...
Paper
Noise measurements of a cavitating propeller in different facilities: results of the round-robin test programme

Oct 9, 2019

Mitigation of shipping noise is a topical issue in marine engineering because of the dramatic increase in the levels of anthropogenic underwater ...
Paper
Round Robin test on the underwater radiated noise of a cavitating ship propeller in open water

Oct 11, 2017

Model tests to determine propeller-induced hull pressure fluctuations are carried out on a regular basis for many ship types, such as cruise ships, ...
Paper
Validation of underwater radiated noise predictions for a merchant vessel using full-scale measurements

Sep 6, 2017

Many marine animals use sound to sense and interact with their environment: for communication, navigation, finding prey and even for self defence. ...
Magazine
Capturing the invisible

Aug 17, 2017

Reading time 6 minutes

High-speed video allows us to capture processes which occur too fast to be visible to the naked eye. This technology is especially valuable for the ...
Magazine
Supporting silent ships: measuring underwater radiated noise from cavitating ship propellers

Aug 17, 2017

Reading time 6 minutes

Have you ever had problems talking to someone in a noisy environment such as a busy restaurant? The same happens to marine animals, which use sound ...
Paper
Validation of computational and experimental prediction methods

Sep 4, 2016

Validation of computational and experimental prediction methods for the underwater radiated noise of a small research vessel Model tests and ...
Magazine
Accurate predictions for noise levels of cavitating propellers now possible

Aug 19, 2016

Reading time 6 minutes

As underwater radiated noise levels in the oceans increases, MARIN has investigated just how much cavitating propellers are to blame.
Paper
Determining Statistical Properties of Quasi-steady Measured Signals

Oct 1, 2015

Quasi-steady measurement methods are becoming more commonplace in MARIN's model test basins for testing the open water performance of propellers, ...
Paper
Acoustic Reverberation Measurements in the Depressurized Wave Basin

Oct 1, 2015

One method to determine the underwater radiated noise (URN) of the cavitating propeller of a ship is to perform model tests in a cavitation test ...
Paper
Computational and Experimental Prediction of Propeller Cavitation Noise

May 21, 2015

Computational and experimental methods for the prediction of underwater-radiated noise due to propeller cavitation as in use at MARIN are discussed ...
Paper
Berth Scour Protection for Modern Vessels

Jun 5, 2014

The increase in vessel size and vessel types along with new propulsion systems has created an increase in the scour action to berth beds. ...
Paper
Underwater Radiated Noise Measurements for a Cruise Ferry

Oct 25, 2013

Inboard noise and underwater radiated noise are becomingmore and more important factors during the designof ships. Model tests are often used to ...
Paper
A quasi-steady method for efficiently conducting open water model tests

Sep 17, 2013

Open water tests of propellers, pod units and thruster units are usually performed in a steady manner where the forward velocity and propeller ...
Paper
Underwater radiated noise measurements with a silent towing carriage in the depressurized wave basin

Sep 1, 2013

Reading time 4 minutes

Because of the increasing interest in underwater radiated noise levels of ships, noise mitigation measures have been applied to the new secondary ...
Magazine
Silence is golden... especially underwater

Apr 20, 2012

Reading time 3 minutes

MARIN introduces a new silent towing carriage in a bid to further the industry's knowledge about underwater-radiated noise.
Paper
Computation of hull-pressure fluctuations due to non-cavitating propellers

Jun 24, 2009

This paper describes a new coupling procedure of two boundary element methods aimed at computing propeller-induced hull-pressure fluctuations. ...

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