In Genesis 49:13 (NASB)
“Zebulun will reside at the seashore; And he shall be a harbor for ships, And his flank shall be toward Sidon.
In Joshua 19:10-16 (NASB)
10 Now the third lot came up for the sons of Zebulun according to their families. And the territory of their inheritance was as far as Sarid. 11 Then their border went up to the west and to Maralah, and it reached Dabbesheth and reached to the [a]brook that is opposite Jokneam. 12 Then it turned from Sarid to the east toward the sunrise as far as the border of Chisloth-tabor, and it proceeded to Daberath and up to Japhia. 13 From there it continued eastward toward the sunrise to Gath-hepher, to Eth-kazin, and it proceeded to Rimmon which stretches to Neah. 14 Then the border circled around it on the north to Hannathon, and it ended at the Valley of Iphtahel. 15 Included also were Kattah, Nahalal, Shimron, Idalah, and Bethlehem; twelve cities with their villages. 16 This was the inheritance of the sons of Zebulun according to their families, these cities with their villages.
Considering Zebulun's territory isn't at the seashore, what's the intent of the sea reference in this Genesis passage?