Tubes are made from GRV (glassfiber reinforced vinylester). The new stern thruster tunnels are build in sandwich construction.
Glass fibers are reinforced with foam-filled polyester.
Because of this choice, they not only look good but also help reduce noise.
The large radius at the tunnel ends reduces turbulence at high speeds.
Height – 240mm
ID – 110mm
Length – 278mm
Width – 180mm





