וַ֠אֲנַחְנוּ נִכְרֹ֨ת עֵצִ֤ים מִן־הַלְּבָנוֹן֙ כְּכָל־צָרְכֶּ֔ךָ וּנְבִיאֵ֥ם לְךָ֛ רַפְסֹד֖וֹת עַל־יָ֣ם יָפ֑וֹ וְאַתָּ֛ה תַּעֲלֶ֥ה אֹתָ֖ם יְרוּשָׁלִָֽם׃ (פ)
Et nous, nous abattrons des arbres du Liban selon tous tes besoins et te les amènerons par radeaux jusqu’à la mer de Joppé; toi, tu les feras monter à Jérusalem."
Bartenura
באסדא – much wood tied and fastened together on which they float them on the river and people walk upon them, and in the language of the Bible (II Chronicles 2:15), they are called “rafts.”
Rashi
I will make them into rafts. They are referred to as רפסודות in Divrei Hayomim.19II Divrei Hayomim 2:15. And in German, flots, and in O.F., res. They would tie logs together and float them on the water, and sail them [in the same manner] as ships are sailed.