"Supports Green Initiatives" designates a hotel's participation in an optional environmental program that includes the use of energy-efficient lighting, guestroom towel/linen re-use, and on-premise recycling. "Supports Green Initiatives" does not represent an official certification of any kind.
Kalmar Nyckel Foundation organizes plenty of events and keep the local communities active through their participation. Quite a few events take place on the ship, Kalmar Nyckel, which is always a fun experience. Check out their website for the history of the ship and more about the foundation.