Global Flood: My Little Boat Can Evolve into an Interstellar Battleship

【Natural disasters + post-apocalyptic survival + building an ocean base + realistic fiction + hardcore sci-fi tech, no fantasy or magic】 Global sea levels surged, submerging 99% of the land. Civilization collapsed, and all order vanished. Some people went bankrupt just to get a ticket aboard a rescue ship. Others fought until they were bloody and bruised over half a bottle of fresh water. Only Jiang Zhou had unexpectedly obtained a small boat with technology that could be upgraded and evolved without limit. He salvaged wrecks, stockpiled resources, upgraded the hull, and built weapons... Step by step, he transformed his little boat into a supercarrier, a steel city at sea, and an interstellar battleship! While others ran themselves ragged just to get a few barrels of gasoline, he fired up a nuclear fusion reactor, giving him an unlimited energy supply! While others gnawed on bread and drank rainwater, he built an ecological habitat, with every kind of delicacy and fresh fruit and vegetables in abundance! When an apocalyptic tsunami came roaring in and everyone else was panicking in place, he switched on the antimatter engine, and his ten-thousand-meter starship shot straight into the sky! What pirate fleets? What deep-sea monsters? What alien advance forces? Wherever my warship goes, a new order will reign! But for Jiang Zhou, who had only just boarded, there was one problem he had to face right now: How the heck do you drive this thing?