🔍 Key Concepts

• automatic tank tapes on tank vessels and how they are normally checked before use • difference between checking free movement of the tape vs checking accuracy of the ullage reading • common uses of litmus paste and hand tapes in cargo operations

💭 Think About

• Ask yourself: Which option lets you quickly and safely prove the tape can move freely, without partial disassembly or doing a full calibration? • Which choices are mainly used for accuracy checks or detecting water in the tank, rather than for testing the mechanical freedom of the tape? • In normal pre-transfer checks, what simple operation do engineers or deck officers perform right at the gauge head to verify the tape isn’t stuck or jammed?

✅ Before You Answer

• Eliminate any option that involves unnecessary disassembly for a routine check. • Separate in your mind: what is used to check mechanical movement vs what is used to check measurement accuracy or water interface. • Focus on the control or feature that is part of the gauge mechanism itself and designed to be used frequently during operation.