This report is Deliverable 8.2 in the NeXOS project. It describes the efforts made in validating the new sensors systems developed in NeXOS, namely three different types of optical sensors, two types of acoustic sensors, sensors for fisheries and the new anti-fouling system. Additionally, data availability and timeliness though the Sensor Web Enablement software/hardware features, developed by NeXOS, was validated. The validations took place on different observation platforms operated by the NeXOS Consortium, under realistic user scenarios, in real sea conditions over a limited time. Validation serves as the final step before the demonstrations in Work Package 9. The systems described herein, were functionally and scientifically validated in the sea, however, not necessarily, where the demonstrations will take place. All systems passed the scientific validation criteria used in the NeXOS project. The results are presented in a template format in order for make overview and reporting easier.