With strong winds and rainy clouds on the horizon, FEUP UAV was forced to postpone their flights to the next day.

Meanwhile, the team on shore run a couple of tests with the lauv-noptilus vehicles inside the harbour. Even though the operational area inside the harbour was quite small it proved to be suficient for the maneuvers required to tune the vehicles' navigation control. This task allowed to improve the vehicles' navigation and, therefore, reduce the error on the vehicles' estimated position while dead-reckoning and thus decrease the bathymetry position error.