I actually read this document recently for my work on grounding equipment on ocean going vessels. Surprisingly, there is very little in Mil-std-1310 (1) about g

I actually read this document recently for my work on grounding equipment on ocean going vessels. Surprisingly, there is very little in Mil-std-1310 (1) about ground loops on ships. Ships are interesting from a grounding perspective because your grounds are generally attached to the steel hull which represents the "common electrical potential". People get confused when comparing ships to land based (e.g. building) grounds in which two or more grounds in, say a building's earthen foundation, could have very different potentials for a variety of reasons and thus ground loops can be present in shielded cables grounded at both ends. On ships, however, unless there is some strange disconuity, the ship's hull is a common potential and generally no ground loop will be generated, so you can generally have a doubly grounded cable with little risk of organic noise. 1.) http://quicksearch.dla.mil/qaDocDetails.aspx?ident_number=36209 http://quicksearch.dla.mil/qaDocDetails.aspx?ident_number=36...