General course objectives
The aim of this course is to provide an understanding of the methods and analyses that form the basics of both performance monitoring (fuel efficiency) and decision support (safety) with regards to ship operations during sailing in a seaway. These techniques are used by naval architects and engineers in the technical departments of ship owners, in classification societies, and ship consultancies.
Content
The term ‘ship operations’ covers in its general use a wide field of disciplines within shipping and naval architecture. In this course, the term is restricted specifically to aspects dealing with a ship sailing in a seaway on open oceans, where the main problem relates to wave excitations of the ship (including motions, loads and fuel consumption). In particular, the focus is on performance monitoring and decision support systems, used to, respectively, monitor fuel efficiency (retrospectively) and guide crew in decisions focused on safety on-board the ship (in real-time). The course deals with a variety of topics, including seakeeping, human factors affecting ship operations, EEDI (Energy Efficiency Design Index), full-scale measurements, stochastic waves, ocean wave energy spectra, motion transfer functions.
Prerequisites
Recommended prerequisites
41201 Fundamentals of ships and other floating structures. 41271 Ship design. 02402 Introduction to Statistics. 02405 Probability theory. 02101 Introductory Programming/02631 Introduction to programming and data processing. Fundamental knowledge about ships and floating structures. Furthermore, 25 ECTS in math and physics, 5 ECTS in statistics and probability theory, 10-15 ECTS in statics and structural mechanics, 5 ECTS in fluid mechanics. The applicant should have experience with numerical methods and programming using e.g. MATLAB.
Learning outcomes
A student who has met the objectives of the course will be able to:
- explain the purpose and principles of decision support systems for navigational and operational guidance of ships
- carry out time series simulations of ship responses
- describe how wave energy spectra and/or sea state parameters can be obtained and subsequently applied in analyses
- apply Fast Fourier Transformation (FFT) to measured time series of ship responses
- apply risk-based approaches in the prediction of wave-induced statistics of responses
- explain how the fuel efficiency of a merchant fleet is influenced by different factors
- explain how human factors are affecting ship operations during sailing
- compute fatigue damage in the hull girder of a ship on the basis of recorded values of the bending moment in the hull girder
- describe, prepare and discuss results derived from the analysis of full-scale as well as simulated response data
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