Brazil faces a unique opportunity: to transform a historical bottleneck the natural gas reinjected into pre-salt reservoirs into a platform for development, clean energy, and global leadership.This book presents an innovative proposal: to take industry to the sea through Very Large Floating Structures (VLFS), capable of hosting entire industrial complexes offshore.With technical rigor and clarity, the work examines the feasibility of establishing floating industrial hubs to produce hydrogen, ammonia, and methanol, analyzing costs, technology, logistics, regulation, and international markets.