Student or Learner
I could perceive the ship coming over the horizon.
Please explain the emboldened parts to me.
The horzion (line) can be considered (our perception of) the curve of the earth - where the land or water is no longer visible due to the earth curving out of view. When the ship draws closer it moves over the curve - over the horizon.
however this is just my interpretation of the phrase. Someone else may be able to offer a better meaning.
I am not a teacher.