555.35(B) Marina and Boat Dock Leakage Current Measurement Device - https://www.MikeHolt.com/code. Electric shock drowning (ESD) is a frightening killer and anything that can be done to prevent it should be done. That is the intent of the change in 555.35(B) requiring a leakage current meter to be provided on site at docks and marinas to assist in the maintenance of shore power connections. This isn’t a solution to the problem but a commendable effort was made to keep the owners and users of docking facilities safe.