In May 2019, Sea Spirit was retrofitted with new Rolls Royce zero-speed (Stabilization At Rest) fin stabilizers, providing high-performance roll damping while underway, drifting or at anchor. They incorporate a time-tested leading-edge design that eliminates vibration and noise and are fully compatible with environmentally acceptable lubricants (EAL) and feature quad main seals for additional redundancy.
Sea Spirit uses available high-quality low-sulfur marine gas oil (MGO) for its cruises in the polar regions. From 1 January 2020, the limit for sulfur in fuel oil used on board ships operating outside designated emission control areas will be reduced to 0.50% m/m (mass by mass) from 3.50% m/m. This limit is set in Annex VI of the International Maritime Organization (IMO) International convention for the Prevention of Pollution from Ships (MARPOL). The m/v Sea Spirit already complies with these requirements - we always use MGO with sulfur content equal to or less than 0.50%.
50 Years of Victory is propelled by electric motors using electricity generated by nuclear reactors, bringing CO2 emissions almost down to zero.