OC-Tech is an ambitious innovation project to develop a multitask catamaran-vessel comprised by different cleaning systems to collect and manage various floating wastes within water bodies, such as hydrocarbons, oils, flotsam, algae, microalgae, microplastics, solid bulky waste, etc. The main benefits of OC-Tech are: (1) Polyvalence and multi-purpose: water cleaning-ship for several types of wastes, and work-ship for other port-related operations, thanks to a broad deck to develop activities such as prospecting, diving, environmental monitoring, beaconing, off-shore assistance, fire protection or port services and cleaning. (2) Efficiency: highly effectiveness in waste collection and separation; up to 70%-80% hydrocarbon separation without emulsion creation, which avoids extra effort in splitting water and hydrocarbons. (3) Easy operation: the cleaning system working in a continuous way avoids the need to return to the port to discharge wastes, leading to fuel and work-hours savings. (4) Profitability: it is expected a cumulative revenue of 21.55 M€ and a cumulative profit of 10.36 M€ by 2023.