sub marine, under surface , sport
large boats?
Narrow boats.
Most of the boats on the Thames are tourist and pleasure boats and there are very few goods carrying boats left.
As far as I am quite sure, there were definitely ships... and paddle boats.
could a grant apply to liveaboard boats?
a plate -.-
sailboat
Yes, the plural noun 'boats' is a common noun, a general word for any boats of any kind.
convergent
It is a subduction zone.
The indo-australian plate is mostly a convergent boundary with the pacific plate.
Divergent Plate Boundary. (Seafloor Spreading).