In 2025, the passenger ship industry is witnessing significant trends towards sustainability and green energy sources. Green corridors are becoming increasingly prevalent, with initiatives like establishing corridors for DFDS green methanol-fueled ferries between the UK and Netherlands and northwest England and Ireland, as well as the first green corridor in the Baltic Sea focused on Viking Line. The Pacific Northwest to Alaska Green Corridor project aims to explore low and zero-greenhouse gas emissions cruising in the Alaska market. The cruise sector is also embracing green technology, with a focus on methanol as a fuel source. Cruise ships like RCCL's Celebrity Xcel and Disney's Adventure are set to use methanol upon delivery in 2025, and NCL's future vessels will have methanol capabilities. Additionally, SunStone Ships' new Boundless-class ships are being designed for green methanol use. While LNG remains a popular choice for fuel, hydrogen is gaining momentum in the passenger ship industry. Noteworthy projects include the first commercial hydrogen fuel-cell passenger ferry, Sea Change, and Norled's hybrid vessel using batteries and liquid hydrogen fuel cells. The cruise sector is also adopting hydrogen, with installations in vessels like Royal Caribbean International's Icon of the Seas. Overall, these developments reflect a positive shift towards sustainable energy sources in the passenger ship sector, with a focus on reducing emissions and transitioning towards greener alternatives.