The International Maritime Organization has released a series of free publications for governments, ports, ship owners and operators to support efforts to reduce ship and port emissions. Products include guidance for governments in terms of establishing and implementing rules, guidance for ports for setting up emissions reduction strategies, and technical guidance for ship owners and operators in selecting options to reduce emissions. Specific guidance is offered for use of liquid natural gas, methanol, as well as for developing a Ship Energy Efficiency Management Plan (SEEMP).