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Master Thesis: “The deterministic and statistical characterizations of ship dynamic stability"

Internship
In the last years the International Maritime Organization (IMO) started the development of 2nd Generation Intact Stability Criteria [1] meant to update the widely adopted Intact Stability Code (IS Code) of 2008. IS Code 2008 covers only the transverse ship stability in static conditions, calm water and zero forward speed; in addition to that a weather criterion is employed to characterize the effect that adverse meteorological conditions have on the stability. The main aim of IMO 2nd Generation Intact Stability Criteria is to extend the IS Code 2008 to also ship dynamic stability problems at sea.
The basic idea behind the development of those criteria is the link between a deterministic description of the phenomenon to a more statistical fashion that characterizes realistic, irregular sea state scenarios. As it appeared in the very last progress of IMO, this connection is not trivial [2].
The objective of this research is to analyze the connection between deterministic and statistical approaches to ship dynamic stability. New ideas and methods are needed to better predict instabilities phenomena; this work will deal with small vessels at high risk of occurrence of instability when sailing in rough sea.

MARIN in-house numerical methods are able to simulate free sailing model tests as well as captive model tests. As first step into the characterisations of the loads acting on the ships in waves the difference between irregular and irregular waves will be available by using these tools.
 
References
[1] Peters, W. and Belenky, V. and Bassler, C. and Spyrou, K. and Umeda, N. and Bulian, G. and Altmayer, B. The Second Generation Intact Stability Criteria: An Overview of Development, Transactions-Society of Naval Architects and Marine Engineers, (2011)
[2] Bonci M., Renilson M., De Jong P., Van Walree F., Van’t Veer R. On the direct assessment of broaching-to vulnerability of a high speed craft, 13th International Conference on the Stability of Ships and Ocean Vehicles (STAB 2018), Kobe, Japan, (2018) https://repository.tudelft.nl/.
 
Duration
The internship is for the duration of 9 months. The start date of the internship period can be determined in consultation with the supervisors.
 
The profile

  • Master student in Naval Architecture.
  • Interest in hydrodynamics and ship motions.

 
Department and supervisor
During the internship you will be connected with the department R&D and Ships of MARIN. The supervisor for this internship, Dr Matteo Bonci, is working as Project Manager at the Ships Department.

 
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