Albert Barnes Commentary 1 Kings 22:49

"Then said Ahaziah the son of Ahab unto Jehoshaphat, Let my servants go with thy servants in the ships. But Jehoshaphat would not." — 1 Kings 22:49 (ASV)

2 Chronicles 20:35–36 explains that the two kings jointly built the fleet to reopen the trade with Ophir (see the note on 1 Kings 9:28).

Ahaziah therefore had an interest in the ships. When they were wrecked, he apparently attributed the calamity to the lack of skill of his ally’s sailors and proposed that the fleet be crewed in part by Israelite sailors—men who were probably accustomed to the sea, perhaps even trained at Tyre.

Jehoshaphat refused this proposal. He was either offended by the criticism of his subjects’ skill or was accepting the shipwreck, which Eliezer had prophesied, as proof that God was against the entire undertaking.