(da)licensing, controlling or prohibiting the display of any pictures, advertisements, news boards or public notices upon a vessel or boat in territorial waters or on inland waterways other than national waterways;(db)licensing, controlling or prohibiting the erection, exhibition, fixation or retention of any sign, device or representation for the purpose of advertisements, which is visible against the sky from some point in any street and is hoisted or held aloft over any land, building or structure at such heights as (regard being had to the traffic in the vicinity, and the likelihood of such sign, device or representation at that height being a distraction or causing obstruction to such traffic) may be specified in the rule or order;