Question 68 GLI02 - Mate of Unlimited Tonnage

The Correct Answer is B **Explanation for Option B (Correct Answer):** Option B is correct because regulatory requirements for vessels that must discharge oily ballast water to a shore facility mandate safety and control mechanisms at the point of operation. Specifically, the fixed piping system for discharge must include a means to immediately stop the pumps being used for the transfer. Placing the control (means to stop the pump) near the discharge outlet ensures that the operator handling the connection to the shore facility can instantly halt the flow in case of a burst hose, accidental disconnection, spill, or emergency, thereby minimizing pollution. This requirement is standard in regulations governing oily waste transfers (such as those derived from MARPOL Annex I requirements). **Explanation of Incorrect Options:** * **A) A containment capacity for at least 5 gallons at the tank vents:** While containment systems are important, having a specific 5-gallon containment capacity at tank vents is not a standard, mandated component of the fixed piping *discharge* system itself. Vent requirements are separate from discharge line controls. * **C) At least two pumps that may be put in line:** The regulation requires control over the pumps being used, but it does not mandate that the vessel must have a specific minimum number of pumps (two) designated for oily ballast discharge, nor that they must be capable of being put "in line" (i.e., operating in series). A single efficient pump is often sufficient, provided it meets flow rate requirements. * **D) At least two outlets accessible from the weather deck:** While having outlets accessible from the weather deck is necessary for transfer, the regulation only mandates the appropriate connection point(s) (often standardized flange connections). Requiring *at least two* outlets is not a specific mandatory regulatory requirement for the design of this fixed piping system. The focus is on pump control at the point of operation.