Send Hans Cozijn a message
Introduction
Experienced professional with a background in hydrodynamics and naval architecture MSc More than two decades of experience in scale model tests and numerical simulations for floating offshore structures Specialities include floater motions coupled mooring analysis dynamic positioning green water loading autonomous vessels scale model tests timedomain simulations
Expertise areas
Publications
Paper
Control design for a multi-regime 6-DOF underwater vehicle- development of MARIN’s modular AUV
Sep 16, 2019
Reading time 5 minutes
MARIN is designing and building a modular autonomous underwater vehicle (mAUV). The vehicle will serve as a platform for research projects to be ...
Paper
Design of an Underwater Vehicle for use in Basin Experiments, Development of MARIN's Modular AUV
Sep 16, 2019
MARIN is designing and building a modular autonomous underwater vehicle (mAUV). The vehicle will serve as a platform for research projects on ...
Magazine
MARIN develops a modular Autonomous Underwater Vehicle
Sep 13, 2019
Reading time 6 minutes
MARIN is designing and building a modular Autonomous Underwater Vehicle (mAUV) in order to gain a better understanding of the challenges involved in ...
Paper
Robust thrust allocation algorithm considering hydrodynamic interactions and actuator physical limitations
Nov 9, 2018
The dynamic positioning (DP) system is responsible for the station keeping of vessels in several offshore operations. The forces required by the DP ...
Paper
Determining Thruster-Hull Interaction for a Drill-Ship Using CFD
Jun 25, 2017
In this paper CFD results are presented for the thrusterhull interaction effects for a drillship with 6 azimuthing thrusters. The results using ...
Paper
Thruster-wave Interaction during DP Stationkeeping - Model Tests in Open Water and under a Ship Hull
Jun 25, 2017
Wave orbital motions may cause variations in the inflow conditions of thrusters, resulting in variations in thrust and torque. Physical scale model ...
Magazine
Joint R&D in Offshore JIPs
Apr 22, 2016
Reading time 6 minutes
The offshore industry works closely together to share knowledge,
experience and costs. Here we give an update on the latest Joint
Industry Projects. ...
Paper
Past, Present and Future of Hydrodynamic Research for DP Applications
Oct 1, 2015
MARIN has been involved in model testing for DP vessels for almost 4 decades. In 1976 a first project was carried out in which the main propeller of ...
Paper
PIV Measurements in Thruster-interaction Research
Oct 1, 2014
During DP operation the thrusters of the vessel counteract the wind, wave and current forces, so that the vessel can maintain its required position ...
Paper
An advanced thrust allocation algorithm for DP applications, taking into account interaction effects and physical limitations
Jun 8, 2014
The Dynamic Positioning (DP) system is responsible for the stationkeeping and manoeuvrability of a vessel in offshore operations. The forces ...
Paper
Thruster-Interaction Effects on a DP Shuttle Tanker - Wake Flow Measurements of the Main Propeller and Bow Tunnel Thrusters
Jun 1, 2014
This paper discusses thruster interaction effects for a DP shuttle tanker, equipped with two main propellers and rudders, as well as two bow tunnel ...
Paper
Thruster-interaction Effects on a DP Semi-submersible and a Drill Ship: Measurement and analysis of the thruster wake flow
Jun 9, 2013
Thruster-interaction model tests were carried out in MARIN's Deepwater Towing Tank. Detailed PIV measurements were performed of the wake flow ...
Paper
The Wake Flow Behind Azimuthing Thrusters, Measurements in Open Water, Under a Plate and Under a Barge
Jul 1, 2012
The wake flow behind a ducted azimuthing thruster was investigated. The thruster wake is an important factor in thruster interaction effects. Model ...
Magazine
Giant six-legged robot gives MARIN model the shakes
Apr 20, 2012
Reading time 3 minutes
Headlines are of course, designed to grab the attention of the reader. But luckily all is not as it seems... Report introduces MARIN's new hexapod ...
Paper
An Innovative Oil Pollution Containment Method for Ship Wrecks Proposed for Offshore Well Blow-outs
Jun 19, 2011
In the aftermath of the PRESTIGE disaster, an innovative system for the prompt intervention on oil pollution sources (primarily ship wrecks) at ...
Paper
A Generic Optimization Algorithm for the Allocation of DP Actuators
Jun 19, 2011
In this paper we present a generic optimization algorithm for the allocation of dynamic positioning actuators, such as azimuthing thrusters and ...
Paper
The DIFIS System for Removal of Oil from Shipwrecks Evaluation of operational conditions, survival conditions and system deployment
Jan 1, 2011
This paper describes a system for the recovery of oil from ship wrecks, even in very large water depths. The system is light-weight, completely ...
Paper
Analysis of the Velocities in the Wake of an Azimuthing Thruster, using PIV Measurements and CFD Calculations
Oct 12, 2010
The wake flow behind a ducted azimuthing thruster was investigated, both in open water conditions and with the thruster placed under a schematical ...
Paper
DIFIS Concept for the Removal of Oil from Ship Wrecks - Hydrodynamic scale model tests for operational, survival and offloading conditions and system deployment
Jun 20, 2010
DIFIS (Double Inverted Funnel for the Intervention on Ship wrecks) is a concept developed to recover hydrocarbons from ship wrecks, even in very ...
Magazine
New initiatives probe thruster interaction effects
Apr 26, 2010
Reading time 9 minutes
MARIN has a long history in research into the performance of thrusters during Dynamic Positioning
(DP) operations. Research on ducted propellers ...
Paper
Motions and Mooring Loads of an LNG-Carrier Moored at a Jetty in a Complex Bathymetry
Jun 1, 2009
The Yemen LNG Company Ltd. is working on the design and construction of an LNG plant in the Republic of Yemen. The LNG plant, located at Balhaf on ...
Paper
Analysis of the tunnel immersion for the Busan-Geoje fixed link project through scale model tests and computer simulations
Jun 1, 2009
In Korea a four lane motorway is constructed between the city of Busan and the island Geoje, reducing traveling times from 1 hour by ferry to just ...
Paper
On the Application of Selected Wave Group Spectra for the Experimental Investigation of Low Frequency Motions of a Moored Structure
Jun 1, 2009
A moored structure shows both wave and low frequency motions in waves. Wave frequency motions are related to the wave elevation and wave power ...
Magazine
DP simulations and model testing - on the spot!
Apr 24, 2009
Reading time 9 minutes
MARIN has a long history in Dynamic Positioning (DP) model testing and computer simulations. In recent years there has been increasing interest in ...
Magazine
MARIN contributes to unique Korean motorway project
Jan 29, 2009
Reading time 3 minutes
In Korea, a four-lane motorway is being constructed between the city of Busan and Geoje island, reducing travelling times from one hour by ferry to ...
Paper
Model Testing and Complex Numerical Simulations for Offshore Installation
Jul 6, 2008
This paper describes the analysis performed for the installation of two top-side modules on the Njord FPU by Saipem UK''s dynamically ...
Paper
Worst Sea - Best Sea Wave Group Spectra from Random Sea States
Jun 15, 2008
The paper presents a proposition called the worst sea-best sea (WS-BS) method that intends to identify wave group spectra that yield time series ...
Paper
Recovery of Oil Trapped in Ship-Wrecks - the DIFIS Concept
May 1, 2008
A method for the prompt and cost-effective intervention and remediation of tanker wrecks dealing with eventual leaks and recovering the fuel trapped ...
Magazine
MARIN leads EU project for the prevention of environmental disasters
Apr 1, 2008
Reading time 6 minutes
MARIN is project coordinator of the European research project Double Inverted Funnel for the Intervention on Shipwrecks (DIFIS), which aims to ...
Magazine
MARIN tests two Prosafe FPSO's destined for Australia and Brazil
Apr 1, 2008
Reading time 6 minutes
Prosafe was awarded two major contracts for the supply and operation of the Ningaloo Vision FPSO for Apache's Van Gogh field, offshore Australia and ...
Paper
Model Tests and Computer Simulations for Njord FPU Gas Module Installation
Mar 1, 2008
Recently, two gas modules have been installed on the Njord FPU, on the Norwegian Continental Shelf, to enable gas exports from the Njord Field ...
Magazine
Deepwater FPSO for Brazil under scrutiny in MARIN's Offshore Basin
Apr 1, 2007
Reading time 3 minutes
Model tests were recently carried out in MARIN's Offshore Basin for a turret-moored deepwater FPSO, to be installed offshore Brazil. Here is an ...
Paper
Heave, Roll and Pitch Damping of a Deepwater CALM Buoy with a Skirt
Jun 19, 2005
The heave, roll and pitch damping of a CALM buoy contains linear contributions (wave radiation) and quadratic contributions (drag loads). The linear ...
Magazine
New publication on Deepwater CALM Buoy
Apr 1, 2005
Reading time 2 minutes
A series of large-scale model tests on the behaviour of deepwater CALM buoys was recently carried out on behalf of Bluewater Energy Services in ...
Paper
Coupled Mooring Analysis for a Deep Water CALM Buoy
Jun 1, 2004
The effect of the mooring loads on floater motions can be significant for small water plane area floaters like CALM buoys. Not only does the mooring ...
Magazine
Big Sweep model tests for Bluewater
Dec 1, 2003
Reading time 2 minutes
MARIN carried out model tests on the Big Sweep LNG offloading system on behalf of Bluewater Energy Services. The
Big Sweep concept consists of an ...
Magazine
MARIN helps improve CALM buoy design
Apr 1, 2002
Reading time 3 minutes
As the deepwater CALM buoy becomes a common solution for offloading from spread moored West of Africa FPSOs, MARIN is carrying out an increasing ...
Magazine
Deepwater innovations offshore Brazil
Apr 1, 2002
Reading time 3 minutes
Brazilian oil company Petrobras has been working together with the university COPEE/UFRJ in Rio de Janeiro on
the development of the Sub Surface ...
Paper
Coupled Mooring Analysis in Large Scale Model Tests on a Deepwater CALM Buoy in Mild Wave Conditions
Jan 1, 2002
This paper describes a series of model tests aimed at gaining insight in the tension variations in the export risers and mooring lines of a CALM ...
Paper
Important Environmental Modelling Aspects for Ultra Deep Water Model Tests
Oct 1, 2001
Model testing for ultra deep water projects requires special attention to the modelling of waterdepth, wind, waves and current. Due to the large ...
Paper
Hydrodynamic Research Topics for DP Semi Submersibles
May 1, 1999
The study of the behavior of dynamically positioned semi submersibles in the time domain can deliver important information on the positioning ...
Other experts
Christian VeldhuisTeam Leader Ships - Simulation & Development | Senior Project Manager | Research coordinator Zero Emission Shipping
Christian VeldhuisTeam Leader Ships - Simulation & Development | Senior Project Manager | Research coordinator Zero Emission Shipping