Requirements with rationale and quantitative rules for EMC on future ships

To ensure the performance on equipment and subsystem level in a naval environment, the conventional approach has been to strictly require national and international military standards on equipment and installations. This approach made Electromagnetic Compatibility (EMC) a cost driver in naval shipbuilding. Many standards lack a clear rationale and scientific reference, appear to be written for old technology and contain more qualitative than quantitative rules.\ud \ud An alternative is a risk based approach, that replaces the strict and extensive acceptance procedures that come with the military standards. Technological developments and diminishing funding dictate the use of Commercial Off The Shelf (COTS) equipment below deck. Civil development produces reliable new technology in large series at a high pace, that is uncommon in the defence industry. The short economic life cycle of (COTS) equipment forbids electromagnetic hardening of individual equipment that is not designed for a military environment. Building adequate electromagnetic environments for this equipment is the only affordable alternative.\ud \ud A protected environment below deck is created by zoning and taking the appropriate protective measures. These measures are based on best practices, which are established techniques. The research in this thesis has aimed at requirements with clear rationale, put in today’s perspective, and installation guidelines with quantitative rules.\ud \ud This thesis consists of two parts. The first part focuses on the what and how. The second part on the how much and why will give a detailed investigation of the application of some best practices to be able to get quantified rules that have the desired effect of meeting the functional requirements. Quantified subjects are: Crosstalk between cables, cable terminations, protection of exposed cables and Radio Frequency (RF) protection of maritime VHF radio