The maritime industry is undergoing a rapid transformation driven by decarbonisation and digitalisation, leading to increasingly integrated and complex onboard systems. Ensuring the robustness of these systems, defined here as a ship’s ability to maintain vital functions despite random component or connection failures, is critical, particularly during early design stages where modifications are less costly. This paper presents a novel robustness evaluation method adapted to ship concept design, utilising network theory to model interdependencies across electrical, control, and data acquisition systems. The method incorporates metrics adapted to maritime engineering, enabling efficient assessment of multiple system configurations and identification of vulnerable components. Applied to five inland vessel concepts varying in automation levels, the results confirm that redundant control options substantially improve robustness, and that elasticity-based metrics provide consistent robustness comparisons across networks of differing sizes. Conversely, classical metrics such as natural connectivity and effective graph resistance potentially exhibit sensitivity to network size, limiting their applicability. The study emphasises the importance of integrating robustness evaluation into early design processes to inform the development of safer, more reliable autonomous vessels. It highlights potential directions for future research, including enhanced failure modelling and statistically based simulations. ... Read more

This thesis investigates the implementation of modularity in the early-stage design process of custom luxury yachts, specifically targeting the Feadship fleet between 75 and 110 meters. The research aims to determine whether modular design methods can optimize efficiency and creativity while maintaining the high degree of customization demanded by clients. To address this, the thesis introduces Modular Function Deployment (MFD) as a structured framework for identifying and evaluating yacht systems suitable for modularization.

Key insights from the study demonstrate that MFD, coupled with innovative tools such as the Area Prediction tool and the Arrangement Generator tool, can enhance both design creativity and efficiency. Contrary to concerns that modularity might restrict creativity, these tools offer designers a structured yet flexible platform for exploring numerous configurations. This encourages the exploration of innovative design arrangements that push the boundaries of conventional yacht architecture.

The study also focuses on evaluating how designers can benefit from modular principles. The Area Prediction tool, based on the Random Forest regression model, predicts the surface areas of different yacht modules. The Arrangement Generator tool allows designers to visualize potential layouts, iterating through various combinations rapidly. These tools support designers in generating new, optimized arrangements that maintain high levels of customization. A case study with Feadship designers highlights the fact that modularity offers substantial benefits, although challenges remain in terms of integrating these tools fully into the creative process.

Future research is suggested to explore whether yacht clients will accept modularity without perceiving the designs as less bespoke, how designers can shift from traditional bespoke methods to modular approaches, and how regulatory challenges may be navigated. But more important, the impact of the ongoing energy transition on future yacht designs is considered significant, necessitating future updates to the prediction tools as yacht specifications evolve. ... Read more