Which preposition to use with shoreline

for Occurrences 1%

On such runs one man steers the boat and watches the forested shoreline for three or four hours at a time, while his mate reads or sleeps; then they change off.

of Occurrences 1%

Mary saw the shoreline of Scotland become dimmer and dimmer.

to Occurrences 1%

It is a pleasant June morning out on the Beauport slopes; the breeze comes laden with perfume from shady Mount Lilac; and it is good to bask here in the meadows and look out upon the grand panorama of Quebec, with its beautiful bay sweeping in bold segments of shoreline to the mouth of the River St Charles.

Which preposition to use with  shoreline