In Isaiah 33:23, this signifies something relating to a ship, which signifies doctrine and truths from the Word which serve to communicate and exchange. (Arcana Coelestia 6385)

In Ezekiel 27:5, this signifies that all the knowledges of good and truth which are Tyre, and doctrines from the Word, which are understood by ships, fit together beautifully, each with its own use. (Arcana Coelestia 6385[4])