Energy System Design for a Nuclear-Powered Refuelling Vessel Supporting Unmanned Maritime Vehicles

Master Thesis (2025)
Author(s)

I.C.C. Klomp (TU Delft - Mechanical Engineering)

Contributor(s)

H. Polinder – Mentor (TU Delft - Mechanical Engineering)

S. Durgaprasad – Mentor (TU Delft - Mechanical Engineering)

Faculty
Mechanical Engineering
More Info
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Publication Year
2025
Language
English
Coordinates
52.0022, 4.3736
Graduation Date
09-12-2025
Awarding Institution
Delft University of Technology
Programme
Mechanical Engineering, Multi-Machine Engineering
Faculty
Mechanical Engineering
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Abstract

This paper presents the design and modelling of a next-generation nuclear-powered mother ship capable of serving as a self-sustaining refuelling hub for unmanned maritime vehicles. A 140m vessel equipped with a 130 MWth Very High Temperature Reactor was modelled as an integrated energy system that converts nuclear heat into synthetic diesel (F-76), through high-temperature electrolysis, direct air capture, and Fischer–Tropsch synthesis. An Energy Management System (EMS) was developed to coordinate power balance onboard. The EMS was extended with a mixed-integer linear programming layer, allowing fleet-wide optimisation of refuelling and mission timing for up to six unmanned surface vehicles. Mission scenario simulation results show that the nuclear mothership can maintain long-term autonomous operations with minimal external fuel dependence, providing aself sustaining alternative to conventional refuelling operations.

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