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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 propellerinduced pressure fluctuations and underwater radiated noise.

Expertise areas
Publications
Paper
Prediction of underwater radiated noise from propeller cavitation during concept design

17 Oct 2022

There is growing concern about the impact of underwater radiated noise (URN) on marine life. One of the main sources of URN of ships is propeller ...
Paper
The SOUNDS project: towards effective mitigation of underwater noise from shipping in Europe

20 Jun 2022

Continuous underwater noise from shipping has been identified as one of the main contributors to ambient noise levels in the oceans. Notwithstanding ...
Paper
Predicting cavitating propeller noise in off-design conditions using scale-resolving CFD simulations

15 Jun 2022

There is increasing awareness about the harmful impact of underwater radiated noise of shipping on the marine environment, with propeller cavitation ...
Paper
Progress in the prediction and mitigation of propeller cavitation noise and vibrations

16 Nov 2020

Comfort on board passenger vessels and pleasure craft is a primary design consideration. Furthermore, underwater radiated noise from vessels is ...
Paper
Noise measurements of a cavitating propeller in different facilities - Results of the round robin test programme

1 Oct 2020

Mitigation of shipping noise is a topical issue in marine engineering because of the dramatic increase in the levels of anthropogenic underwater ...
Paper
Noise measurements of a cavitating propeller in different facilities - Results of the round-robin test programme

9 Oct 2019

Mitigation of shipping noise is a topical issue in marine engineering because of the dramatic increase in the levels of anthropogenic underwater ...
Paper
Calibration of flush-mounted hydrophones using various signal types

9 Oct 2019

Measurements of cavitation-induced underwater radiated noise (URN) are carried out on a regular basis in MARIN’s Depressurised Wave Basin ...
Paper
Round Robin test on the underwater radiated noise of a cavitating ship propeller in open water

11 Oct 2017

Due to concerns about its effect on marine life, shipping noise is receiving increasing attention within the maritime industry. The primary noise ...
Paper
Validation of underwater radiated noise predictions for a merchant vessel using full-scale measurements

27 Aug 2017

Underwater radiated noise (URN) was previously primarily of interest in connection with the signature of naval vessels. Recently it has become ...
Magazine
Capturing the invisible

17 Aug 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

17 Aug 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

4 Sep 2016

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

19 Aug 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
Acoustic Reverberation Measurements in the Depressurized Wave Basin

1 Oct 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
Determining Statistical Properties of Quasi-steady Measured Signals

1 Oct 2015

Quasi-steady measurement methods are becoming more commonplace in MARIN's model test basins for testing the open water performance of propellers, ...
Paper
Computational and Experimental Prediction of Propeller Cavitation Noise

21 May 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

5 Jun 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

25 Oct 2013

Inboard noise and underwater radiated noise are becoming more and more important factors during the design of ships. Model tests are often used to ...
Paper
Systematic Propeller Optimization Using an Unsteady Boundary-Element Method

25 Oct 2013

A propeller parameterization method and itsapplication to optimize a propeller geometry in an effectivewake field is presented. The parameterization ...
Paper
A quasi-steady method for efficiently conducting open water model tests

17 Sep 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

1 Sep 2013

0
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

20 Apr 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
The influence of the wake scale effect on the prediction of hull pressures due to cavitating propellers

15 Jun 2011

In this paper, the scale effect on the wake field of ship models is shown to be an important cause of prediction inaccuracies of hull pressure ...
Paper
Computation of hull-pressure fluctuations due to non-cavitating propellers

24 Jun 2009

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

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