Using Technology to Keep Air Clean
Ships sailing within emission control areas (ECAs) – including all that visit Alaska – must either use fuel limited to 0.10% sulfur or technology to achieve equivalent sulfur emission goals. Many of cruise operators have aggressively pursued the installation of stack emission control system technology or converting to cleaner-burning emission LNG.
Alaska was also the first cruise destination to partner with cruise lines to allow ships to plug into local shoreside power while docked in communities with sufficient infrastructure. In Juneau, shore power is available at one dock, allowing the vessel moored there to reduce emissions by plugging into the city’s hydroelectric power. This practice, which results in a significant reduction in fuel emissions, has been adopted by cruise ports around the world.
Alaska cruise vessels also use onboard opacity-monitoring technology to observe air emissions. Data collected is useful in allowing environmental engineers to continue to improve their air systems.