If visual inspection of the exhaust and drainage status is not good, it may be disabled after the judgment of the Chief Engineer in order to maintain the environment of the commercial port area.
If the smoke exhaust and drainage conditions are poor through visual inspection, in order to maintain the environment of the commercial port area, it shall be stopped after the judgment of the chief engineer<br>
If the visual inspection of smoke drainage conditions are not good, in order to maintain the environment in the commercial port area by the captain of the ship after the judgment of the deactivation