Currency and Upgrades

Currency and Upgrades, which can be bought at a shop, like a water mine, depth charges (for submarines), Cannons, ranging from 20mm cannons to battleship 320mm cannons, and anti-air turrets. Also Differing bombs, like Carpet bombing or one big bomb, and smaller, weaker, but more numerous torpedoes, all available in the shop, You can equip these items in the armory, where you can equip your bought items on your ships.