As ports globally aim to decarbonize, the focus shifts to electrifying vessels for emissions-free maritime trade. The phased strategy builds on prior ground vehicle and port electrification efforts. By the 2040s, advancements in battery technology and renewable energy generation are set to revolutionize maritime operations, with inland shipping and short-sea routes transitioning to battery-electric solutions. Ocean-going vessels will rely on hybrid propulsion systems and biofuels within designated emission control zones. Port bunkering infrastructure will shift entirely to bio-derived fuels like hydrotreated vegetable oils (HVO), ensuring sustainable shipping practices. Differing opinions exist on the choice between biodiesel and biomethanol, both offering benefits. Future projections indicate the potential for fully electric ships on transatlantic routes, signaling a significant shift towards a decarbonized shipping sector.