The Cattle - 6:97
It is He Who created the stars for you so that you may find your way in the darkness of the land and the sea. We have explained the verses in detail for a people who know.
Detail of the darkness of the sea:
The Light/24:40
Or it is like the darkness in the midst of a vast sea covered by wave after wave with a dense mist. Darkness piled on top of each other. When a man stretches out his hand, he can hardly see it. He whom Allah has deprived of light has no light at all.