Knowledge of the sea - Skilful sailors. Solomon probably bore the expenses and his friend, the Tyrian king, furnished him with expert sailors; for the Jews, at no period of their history, had any skill in maritime affairs, their navigation being confined to the lakes of their own country, from which they could never acquire any nautical skill. The Tyrians, on the contrary, lived on and in the sea.

Huram

2 Chronicles 9:10,13 And the servants also of Huram, and the servants of Solomon, which brought gold from Ophir, brought algum trees and precious stones...

1 Kings 9:27,28 And Hiram sent in the navy his servants, shipmen that had knowledge of the sea, with the servants of Solomon...

1 Kings 10:22 For the king had at sea a navy of Tharshish with the navy of Hiram: once in three years came the navy of Tharshish, bringing gold...

Hiram
Ophir conjectures respecting the situation of Ophir are endless. Grotius conjectures it to be a part of Arabia called Aphar by Arrian; while Bochart and others have placed it in the island of Ceylon. Calmet supposes it to have been situated in Armenia; but his late editor places it at the head of the Indus. Josephus says that Ophir is in the Indies, called the Gold country; by which he is supposed to mean Chersonesus Aurea, now Malacca, opposite Sumatra; and Le Poivre observes that the inhabitants of these places call their gold mines `ophirs.'

took thence

Ecclesiastes 2:8 I gathered me also silver and gold, and the peculiar treasure of kings and of the provinces: I got me men singers and women singers...

Chronicles
The comparative indifference with which Chronicles is regarded in modern times by all but professional scholars seems to have been shared by the ancient Jewish church. Though written by the same hand as wrote Ezra-Nehemiah, and forming, together with these books, a continuous history of Judah, it is placed after them in the Hebrew Bible, of which it forms the concluding book; and this no doubt points to the fact that it attained canonical distinction later than they. Nor is this unnatural. The book …
John Edgar McFadyen—Introduction to the Old Testament