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The Port of Seattle's 2025 cruise season report indicates significant progress towards the 2027 mandate for all home port ships to utilize 100% shore power at dock. In 2025, eight home port ships achieved a record 65% shore power usage during 298 port calls, an increase from 42% in 2024. Additionally, the port collaborated with Carnival Corp. on a biofuel demonstration project, testing biofuel bunkering during three Holland America Line sailings.