Time-averaged velocity and turbulence intensity at the initial downstream flow from a six-bladed ship propeller

► Jet from six-blade ship propeller with limited existing documentation is studied. ► Six-blade propeller has a lower tangential velocity, but a higher radial velocity. ► Six-blade propeller has its own diffusing mechanism compared to three-blade propeller. ► Axial, tangential and radial velocities and turbulence intensity are investigated. ► Empirical equation to predict the peak of turbulence intensity is proposed.