Unalaska says they have the biggest harbor in the area- including a Naval base.

The main export product is fish-but Ilia only had up to ca 8000 tons of empty space- 1 of the 7 cargo holds at most-and that assumes it wasnt carrying any product from port previous to Ensenada- so doesnt seem cost efficient to go that far out of the way just for ca 7000 tons of fish to take to China or Korea