Ship Manoeuvring

• Shipbuilding, Semester 3, position 4

Within the course, students are introduced to the basic principles of ship manoeuvrability, in order to ensure safe control of the ship's trajectory during navigation. In this context, students are familiarized with standard procedures for assessment and criteria for evaluating the manoeuvrability of existing ships. Additionally, they become acquainted with the relevant regulations established by ITTC and IMO governing ship manoeuvrability. Students are comprehensively introduced to both theoretical and experimental methods utilized in ship design, with the aim of achieving the necessary manoeuvring characteristics. In addition, students acquire essential knowledge of the technical specifications of existing control devices utilized for steering the ship during navigation.

1. The student gains a comprehensive understanding of the fundamental challenges associated with ship manoeuvrability, along with the basic manoeuvring characteristics specific to seagoing displacement ships. 2. The student can effectively apply comprehensive knowledge in mathematics, rigid body dynamics, fluid mechanics and basic engineering principles to determine and analyze the manoeuvring performances of a ship. 3. The student is trained to critically assess how primary and secondary characteristics of hull form and control devices affect manoeuvrability, employing fundamental principles of natural sciences. This analysis aims to optimize ship design to enhance manoeuvrability. 4. The student is qualified to select and apply appropriate empirical, numerical, and experimental methods to assess the impact of basic parameters of hull form and control devices on the manoeuvring capabilities of the ship, considering the limitations of the waterway, as well as the constraints of the chosen methods. 5. The student can choose and critically evaluate relevant technical literature and other sources of information for solving complex problems in the field of marine hydrodynamics with a particular focus on ship manoeuvrability. 6. The acquired knowledge enables the student to address complex engineering challenges and meet specific design requirements imposed by contemporary trends in naval architecture, particularly those related to ship manoeuvrability. This is notably apparent in the case of full-form ships, which may lack directional stability, necessitating the implementation of innovative technical solutions within confined spaces to ensure the vessel's safety.

The theoretical teaching emphasizes introducing students to the fundamental principles of ship manoeuvrability, along with essential mathematical formulations concerning: 1) basic principles of ship handling and manoeuvring; 2) theoretical approach – involves developing methods for numerical assessing ship manoeuvrability and analyzing the advantages and limitations of these methods; 3) experimental approach – involves discussing standard manoeuvrability tests, including model tests (free model tests and captive model tests), and full-scale tests of existing ships (such as spiral and reverse spiral tests, pull-out tests, Z tests, turning tests, etc.); Students are introduced to mandatory regulations concerning manoeuvrability, as well as to various technical solutions, i.e. control devices commonly used to regulate the ship’s course during navigation.

Within practical teaching, the emphasis is placed on applying theoretical knowledge to everyday engineering practice. Practical guidance is provided on conducting standard manoeuvrability tests for existing ships. Students are introduced to both active control devices (such as side jet propulsors, pump pushers, and steering propulsion devices) and passive control devices (including various types of rudders). Additionally, recommendations are provided for ship design and the selection of appropriate control devices to enhance manoeuvring characteristics and meet criteria outlined by IMO regulations. During practical teaching, various computational tasks are considered, to apply the theoretical concepts discussed.

There are no prerequisites.

Extracts from lectures (handouts). Detailed reports from measurements. Manufacturer's product brochures. Internet resources. Relevant books and professional papers. Relevant IMO documents.

Total assigned hours: 75

New material: 30
Elaboration and examples (recapitulation): 0

Auditory exercises: 30
Laboratory exercises: 0
Calculation tasks: 0
Seminar paper: 0
Project: 0
Consultations: 0
Discussion/workshop: 0
Research study work: 0

Review and grading of calculation tasks: 5
Review and grading of lab reports: 0
Review and grading of seminar papers: 0
Review and grading of the project: 0
Test: 5
Test: 0
Final exam: 5

Activity during lectures: 5
Test/test: 55
Laboratory practice: 0
Calculation tasks: 0
Seminar paper: 0
Project: 0
Final exam: 40
Requirement for taking the exam (required number of points): 30

Extracts from lectures (handouts); E. Lewis, (editor): Principles of Naval Architecture (Chapter IX – Controllability), SNAME, Jersey City, 1988.; J. Brix: Maneuvering Technical Manual, Seehafen Verlag, Hamburg, 1993.; A.F. Molland, S.R. Turnock: Marine Rudders and Control Surfaces, Butterworth – Heinemann, 2007; Relevant IMO Documents