The through hull piping, bracing and safety valves for the main engine exhaust system have been bought and installed.

At low RPM’s the exhausts exit through the bypass above the waterline to keep exhaust back pressures down. Once vessel speed increases the exhausts exit through the underwater section of the exhaust system reducing noise levels and redirecting the exhaust gas away from the hull. There is an underwater cowling designed to produce a venturi effect using the vessels forward motion, which lowers exhaust back pressure extending engine life.