Frans Hendrik Lafeber
Team Leader Data Analysis & Prediction
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
A procedure for estimating mitigation effect of air injection on ship underwater radiated noise
25 Aug 2024
Increasing evidence exists that underwater radiated noise from ships has a negative impact on marine ecosystems. This has led to initiatives aimed ...
Paper
Ship URN mitigation by air injection: model-scale experiments and application to full-scale measurement data
17 Mar 2024
It is recognised that continuous underwater radiated noise (URN) from shipping needs to be mitigated in order to minimise impact on marine animals. ...
Paper
Scale Model Measurements of Ship Machinery Noise Mitigation by Air Injection
24 Oct 2023
Underwater radiated noise (URN) from shipping is a main contributor to the rising noise levels in the oceans. There is growing evidence that this ...
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
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
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
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
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 ...
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 ...
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
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
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
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
0Because 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 ...
