Cruise ships are complex systems that strongly resemble municipal communities, as they must manage a significant and diversified amount of waste streams, often while far away from the shore. Different waste management techniques are employed on vessels, such as storage and off-loading, discharge at sea (if possible) and incineration. The scope of this study was to develop a model for a plasma gasification system and to simulate the treatment process of different feedstock compositions, based on the waste date obtained from the literature. A parallel model for an RF plasma torch as part of plasma generation system, i.e. plasma generator was also developed, to assess quantities which are needed by the gasification model.