In this subtitle the following words have the meanings indicated. “Boat” includes any raft, canoe, floating blind, skiff, or other floating device. “Offshore” means any place on waters of the State below the mean high tide mark on tidal waters or below the mean high water mark on nontidal waters. “Offshore blind site” means a specific location in the water where a person may hunt wild waterfowl from a boat that is tied to or anchored at a stake which has been licensed pursuant to this subtitle. “Offshore stationary blind” means an offshore structure built on pilings or stakes that has been licensed pursuant to this subtitle and used for hunting wild waterfowl. “Waterfowl safety zone” means: An area 150 yards from any occupied dwelling; or A section of shoreline not exceeding 250 yards in length owned by a federal or State unit.