I don't see any ambiguity at all.
From USCG National Vessel Documentation Center, FAQ Page
IS A DOCUMENTED VESSEL EXEMPT FROM STATE JURISDICTION?
No, all documented vessels must comply with the laws of the state in which they are operated. The vessel's document must be shown to state law enforcement personnel upon their demand. States may require documented vessels to be registered (but not numbered) and to display state decals showing that they have complied with state requirements.