They have made all thy ship boards of fir trees of Senir: they have taken cedars from Lebanon to make masts for thee.
They have made all thy ship boards of fir trees of Senir - or 'Shenir,' the Amorite name of Hermon, or the southern height of Antilibanus (Deuteronomy 3:9); the Sidonian name was Sirion. "All thy ... boards:" dual in Hebrew, 'double-boards'-namely, placed in a double order on the two sides of which the ship consisted (Vatablus); or referring to the two sides or the two ends, the prow and the stern, which every ship has (Munster).
They have taken cedars from Lebanon to make masts for thee - "cedars," most suited for "masts," from their height and durability.