Hello !

You might be using one or several mods that are causing the issue : here's a link to a related issue, this player was using Endless Mod which caused the same issue https://www.games2gether.com/amplitude-studios/humankind/forums/215-bug-reports/threads/49537-phoenicians-aren-t-getting-their-bireme?page=1#post-358138

You should start a new game without any mods ON, it should fix it !

Cheers !