BAPLIE

BAPLIE (Bayplan/Position List) is an UN/EDIFACT electronic data interchange (EDI) message standard developed by the SMDG (Ship Message Design Group) to transmit the complete container stowage plan of a vessel between ship operators, terminals, and port authorities. Each BAPLIE message contains, for every container position on the vessel, the bay-row-tier slot identifier, the container number, ISO type code, weight, and any special stowage designations including dangerous goods class and segregation requirements. A pre-BAPLIE is issued by the terminal to the ship operator before loading; a post-BAPLIE confirms actual stowage after loading is completed. The chief mate uses the pre-BAPLIE to review the loading sequence and verify that the planned positions satisfy stability, trim, and segregation requirements before authorising loading to commence. The post-BAPLIE becomes the definitive record of cargo carried and is transmitted to the next port as the basis for discharge sequencing. On modern ECDIS-integrated loading computers, BAPLIE data populates the ship's loading instrument automatically, calculating departure stability and longitudinal stress. The OOW should be able to interrogate the stowage plan data to verify the location of reefer containers, dangerous goods, and overweight units relevant to on-watch monitoring responsibilities.