Before operating a non-oceangoing ship greater than 100 gross tons it must have a fixed piping system to discharge oily mixtures ashore. This system must include __________.

Correct Answer: Option B — at least one outlet accessible from the weather deck

33 CFR 155.330 requires that the fixed piping system for discharging oily mixtures must include at least one discharge connection accessible from the weather deck. This design allows shore-side personnel to easily connect transfer hoses to the vessel's internal piping system for the safe removal of oily waste.