Question 18 TK01 - Tank Vessel Assistant - Dangerous Liquids

The Correct Answer is D **Explanation for Option D (the person designated as "person in charge"):** Regulations governing tank vessel operations (specifically found in 33 CFR Subchapter O, particularly Part 155 and Part 156 regarding transfer operations) mandate that hazardous liquid transfer operations—which include connecting, disconnecting, and topping off—must be supervised by a designated "person in charge" (PIC). The PIC is responsible for ensuring the safety and regulatory compliance of the entire operation. This designation is crucial because it assigns clear accountability for critical and potentially dangerous phases of cargo transfer. **Explanation of Why Other Options Are Incorrect:** * **A) any certificated tankerman:** While a certificated tankerman must perform certain duties and may assist, the regulations require a *specifically designated* person to take supervisory charge of the entire transfer operation. Not every certificated tankerman automatically holds the supervisory role of PIC for that particular transfer. * **B) the officer of the watch:** The Officer of the Watch (OOW) is responsible for the overall safety and navigation of the vessel. However, during cargo transfer, the specific regulatory duty for supervising the transfer operation itself (connecting, disconnecting, etc.) falls explicitly to the designated Person In Charge, who may or may not be the OOW, depending on the vessel's organization and manning schedule. * **C) the master of the vessel:** The Master is ultimately responsible for the safety of the entire vessel and all operations. However, the regulations require the Master to designate a "person in charge" to directly supervise the transfer. While the Master holds overall authority, they are not required to be physically present supervising every step of the connecting, topping off, and disconnecting process—that is the defined role of the PIC.