This study provides an empirical overview of the management, drivers, technologies and the quantities of different categories of ship-generated waste. The data presented in this report have been collected from ship audits, interviews, a literature review, an online survey among stakeholders and audits of waste notification forms. For almost every type of ship-generated waste, there is a variety of waste flows and on-board treatment methods. The empirical evidence gathered in this study shows that ships use different treatment methods and often only treat part of a waste stream. This results in a difference between the amounts of waste generated and the amounts landed.