Tankerman · Cargo Documents — Ullage Report / Dry Certificate
At the start of loading, an inspector and tankerman often establish that the vessel's tanks are empty by issuing a:
- ABill of lading for the next port
- BVessel Experience Factor / dry-tank (OBQ) certificate documenting any on-board quantity before loading✓ Correct
- CCrew list
- DGarbage record
Explanation
Before loading, tanks are gauged for On-Board Quantity (OBQ) — any clingage, residue, or water already present — and documented. After discharge, the Remaining-On-Board (ROB) is similarly recorded. These figures, with the Vessel Experience Factor, reconcile ship and shore quantities and support custody transfer.
Authority: API MPMS Ch. 17 (Marine Measurement)
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