No person shall live on board any vessel within the Sacramento marina. This prohibition against living on vessels shall not prevent the use of vessels in the marina for eating and sleeping purposes for a period not to exceed three days in any seven-day period. One or more persons on board between the hours of one a.m. and six a.m. shall be considered as living aboard that night; unless the vessel enters or leaves the Sacramento marina during that time. (Ord. 2006-059 § 1)