Marine Loss Control · API MPMS Ch. 17.9 / IP HM 49
| # | Vessel TCV | Shore TCV |
|---|
Use consistent units for all entries (bbl, m³, or tonnes). Exclude post-drydock and onboard-only voyages per §8.3.
How the VEF is built from voyage history, major-error and ±0.30% qualifying, and how it is applied in marine custody transfer
A vessel-specific factor = total vessel TCV / total shore TCV over qualifying voyages, applied to the ship's measured volume for loss control and custody reconciliation (API MPMS 17.9).
VEFL is computed from loading voyages, VEFD from discharge voyages. Same algorithm; only the ratio source differs.
A minimum of five qualifying voyages (up to the most recent 20). Major errors (ratio outside 0.98–1.02) are rejected and voyages outside ±0.30% of the mean do not qualify.