a proceeding not much facilitated by the vapors partly mantling the hull, through which the far matin light from her cabin streamed equivocally enough; much like the sun—by this time hemisphered on the rim of the horizon, and, apparently, in company with the strange ship entering the harbor
This description of the ship eerily parallels ones encounter with an attractive stranger, astounded by their beauty and mystery. Reminds me of moments where you glimpse upon someone and catch a whiff of their scent or the way light hits their eyes and you want to know more. This metaphor of the "vapors partly mantling the hull" best exemplifies this idea. Their image is not fully in view and you want to know more about them.