Today cruise tourism represents an important share of tourism market. During 2018 this sector has handled 28.5 millions of passengers at the global level, whit an increasing higher than 600% from 1990 to today. At the same time, cruise sector is responsible of a large amount of impacts for the local communities, host territories, atmosphere and waterways. This sector is a touristic product multi-destination by sea because includes a large number of intermediate ports, selected for touristic attractions in order to satisfying a more detailed demand (e.g. by a medium level target of consumer-users with a fair awareness of environmental implications). This thesis, as a part of for the scientific disciplinary sector SECS-P/13 (Commodities Sciences), offers an opportunity to analyze the relationship between the growth of the cruise market and the management of environmental sustainability. We have tried to understand how sustainability approach it is implemented, both on the product supply’s side (cruise companies) and consumer's product side (cruise passengers). Then, this analysis allowed us to know weaknesses and strengths of this tourism sector. This thesis consists of three parts: a part is a review thesis (First Part - Review), a part is a descriptive and comparative research thesis (First Part - Regulations, Second Part - Impacts and Sustainability Report) and the last part is an experimental thesis (Third part - Applications). With the thesis "Environmental sustainability in cruise tourism. Some applications" we have offered some points of analysis for scientific research, in particular in the field of environmental impacts.