I have run across several references to Aristotle's arguments for a spherical earth which claim that he noted that ships sink over horizon hull-first. For instance, Isaac Asimov writes in his essay The Relativity of Wrong:
There were reasons, to be sure, to find the flat-earth theory unsatisfactory and, about 350 B.C., the Greek philosopher Aristotle summarized them. First, certain stars disappeared beyond the Southern Hemisphere as one traveled north, and beyond the Northern Hemisphere as one traveled south. Second, the earth's shadow on the moon during a lunar eclipse was always the arc of a circle. Third, here on the earth itself, ships disappeared beyond the horizon hull-first in whatever direction they were traveling.
However, Aristotle's arguments for the sphericity of the earth appear in On the Heavens, Book II, Part 14, and I see no reference to ships sinking below the horizon.
Did Aristotle in fact make this argument somewhere else, and if not, who was the first person to take this as evidence of a spherical earth?