This document reports the work conducted during the task 2.2 of the work package 2 of the NEMMO project. The overall goal of the NEMMO project is to improve blade of tidal turbine in composite material for tidal energy generation. The work includes a large test programme at SSPA, including 3 sets of blades, which includes carbon fibre blades from Canoe and bronze blades from SSPA for blade geometry 1 and 2. It also includes testing of constant cross sectional profiles at 0.5R and 0.8R on the original blades. Two types of flow control were tested but reported in T2.3. Furthermore, LDV (Laser Doppler Velocometry) was used to measure the flow field at 3 planes upstream and downstream of the blades. Finally, surface roughness modelling is described. CFD and LES modelling are mainly described in WP1.