Craftsman Marine stern thruster tunnels are built from a glassfiber reinforced polyester filled with PU foam.
This sandwich construction creates a great look and helps to reduce noise. Shallow draft vessels might need an additional deflector kit to use the stern tunnel. These additional covers are mounted on the tunnel and minimize the amount of false air being sucked into the tunnel. All Craftsman Marine electric and hydraulic thrusters suitable for a 150mm or a 185mm tunnel can be used with the stern tunnels.