Question 304General Subjects - 1st Asst/Chief

The correct answer is D) Locking the door to the space enclosing the toilets with a padlock or door handle key lock to prevent entry when the vessel is entering a "no discharge zone". This is the correct answer because under 33 CFR Subchapter O, which governs marine sanitation devices, the regulations require that when a vessel equipped with a Type II Marine Sanitation Device enters a "no discharge zone", the device must be secured to prevent the discharge of sewage. Locking the door to the toilet space is an acceptable method to prevent access and discharge if it is impractical to close the seacock. The other options, such as warning signs, taping toilet bowls, or announcements, do not physically secure the sanitation device to prevent discharge as required by the regulations.