(19) "Structure" means an institutional, residential, commercial,
or industrial building.
"Structure" means any structure located upon any tidewaters of this state, whether such structure is floating upon such tidewaters and is made fast by the use of lines, cables, anchors, or pilings, or any combination thereof, or is built upon pilings embedded [...]
"Structure" means any structure located upon any navigable stream or river of this state, whether such structure is floating upon such navigable stream or river and is made fast by the use of lines, cables, anchors, or pilings, or any combination thereof, or is [...]