turrets can only control by Cameras.
1G Front turret.
2G Back turret.
3G Front flak gun.
4G Back flak gun.
warning:
activate them all at once will and fire the Cannons will shoot both directions and wasting your ammo when activate one at a time or for front camera activate 1G turret and 3G flak gun, for the back camera Activate 2G turret and 4G flak gun.
enjoy my build :)

             Disclaimer 

this is story/lore is not real and only fictional enjoy reading

Lore:
In 1941. The empire of japan has plan to camp any Philippines island they occupied half of the Philippines right side in the Philippine seas Philippines want to send all thier military power to push back the Japanese but they have no warships to counter the Japanese fleets and including the occupied island with fortified bunkers and the Philippines military budget is still low so they can't build two vehicles such as ships and tank all at once knowing how low their budget is
So the engineers and military navy brute force their thoughts and brute way to build an amphibious ship that can go sea and land desperate to fight off the japan
so they begin the first prototype
building the hull of the ship and decided which wheels or tank tracks for the land
after 3 months later they finally finished building the hull of the ship and tank threads (I know the build in here is wheels instead of tracks because I'm on Android and can't download mods)
is what they decided for the land so they add a giant 2 engine one is for the propeller of the ship for sea and one is for the tank threads and so They begin drive and testing of the ship on the sea and all of the test results are successful
Now for the weapons do the low budget of the military they only put 3 turrets two on the front, one in the back and 2 flak gun both front and back of the ship.
And each turrets has 2 300mm cannons and each flak guns has 4 50mm cannons then the Engineers name the ship "PN-1 battleship" stands for "Philippines nany-1 battleship"
they finalize the build the details and other requirements of the ships and they only built 4 of them and then in June, 5, 1942
They are now entered service and immediately send the 4 landship to take back the Philippines island
one by one the fortified bunkers of the Japanese is immediately got destroyed and including the ships deploying troops to raid deep enemy bunkers.
As for the Japanese naval war vessels they send few to destroy the 4 land Ship but unfortunately for them the cannons of the landship are too overwhelming because how much it can penetrate the armor of the Japanese ships and they continue to retrieve the island one by one pushing the empire of japan back for now, so will they be victorious against japan or they will fight until they will deplete their resources time will tell.