**Part 2 Innovations Methods in Naval Engineering**

*Chapter Six "Exploring the Potential of the Sea"* presents the definition of naval engineering, which is the branch of engineering that has as the main activity the exploration of the potential of the sea. Although specialized, naval engineering is quite eclectic since it addresses the main aspects of other engineering modalities, directly or indirectly. With the development of oil exploration and production in the ocean, the naval engineer's work has extended to ocean engineering.

*Chapter Seven "Vortex-induced vibration of a marine riser: Numerical simulation and mechanism understanding"* focuses on Vortex Induced Vibration (VIV), which is the main cause of fatigue damage of the riser. The prediction of marine riser VIV is very difficult because of its strong non-linearity, instability, and uncertainty. In recent years, many numerical models of VIV for marine risers have been developed to explore the mechanism of marine riser VIV, providing scientific theoretical basis and practical engineering methods for vibration control and engineering design of marine risers. Combined with the authors' own recent research results, this chapter discusses the research progress and the key issues of marine riser VIV in ocean engineering, including phenomenon mechanism analysis and the development of different numerical research methods.

*Chapter Eight "Stability-of-subsea-pipelines and pipe-in-pipe-systems"* investigates buckle propagation of subsea single-walled pipeline and Pipe-In-Pipe (PIP) systems under hydrostatic pressure, using 2D analytical solutions, hyperbaric chamber tests, and 3D FE analyses. Experimental results are presented using hyperbaric chamber tests, and are compared with a modified analytical solution and with numerical results using finite element analysis for single-walled pipelines and PIPs.

*Chapter Nine "The Influence of Water Quality on the Structural Development of Vessels. Providing Directions for a Smart Dimensioning Process"* presents an extensive literature review articulated with practical approaches. This chapter aims to define

**V**

relevant directions for vessel's structural development processes regarding the water quality (sea or river waters), where they will outline their routes. Therefore, the study looks for a relationship between the vessel's structural coating design process and the quality of the water where they navigate. Moreover, such a process not only will optimize/minimize the costs with the periodic maintenance of the vessel's linings, but also regarding its routes - contributing to the revitalization of their

We hope the selected chapters will help the readers to enhance their understanding

**Nur Md Sayeed Hassan** Central Queensland University,

**Sérgio António Neves Lousada**

Campus Universitário da Penteada,

UMa - Faculdade de Ciências Exatas e da Engenharia,

Cairns Campus, Queensland, Australia

Funchal - Portugal

structural dimensioning.

of engineering pedagogy and processes.

relevant directions for vessel's structural development processes regarding the water quality (sea or river waters), where they will outline their routes. Therefore, the study looks for a relationship between the vessel's structural coating design process and the quality of the water where they navigate. Moreover, such a process not only will optimize/minimize the costs with the periodic maintenance of the vessel's linings, but also regarding its routes - contributing to the revitalization of their structural dimensioning.

We hope the selected chapters will help the readers to enhance their understanding of engineering pedagogy and processes.

> **Nur Md Sayeed Hassan** Central Queensland University, Cairns Campus, Queensland, Australia
