Qarir's fleet, armed with Mangers on board, attack the Death Cult ships, too, and have a naval attack on the coast of the city.
There is no coastal city. By now the main fleet has arrived numbering a total of 150 ships many armed with catapults whom with more range destroy more ships than the mangers can do
150 warships just for your tiny section of the Caspian Sea, when you don't even have a coastal city to dock them? hmmmm.....