A master bill of lading (MBL) is issued by the ocean carrier to its direct customer, often a forwarder or NVOCC. A house bill of lading (HBL) is issued by that forwarder or NVOCC to the actual shipper. One MBL commonly covers cargo sold under one or many HBLs.
The two documents describe the same physical movement from different contractual positions. On the MBL, the NVOCC or forwarder appears as shipper and its destination agent as consignee. On the HBL, the real exporter and importer appear. Each document binds its own pair of parties.
This layering is why consolidated (LCL) cargo can have many house bills under one master, and why release at destination runs in two steps: the carrier releases to the forwarder’s agent against the MBL, and the agent releases to each importer against its HBL.
Only the MBL and its containers exist in the ocean carrier’s systems, so carrier tracking keys are the MBL, booking, or container number. An HBL number resolves through the forwarder, not the carrier. The practical route in TrackingMCP: get the container or MBL reference from your forwarder once, then follow the physical events directly, for example on ONE or CMA CGM.
A master bill of lading (MBL) is issued by the ocean carrier to its direct customer, often a forwarder or NVOCC. A house bill of lading (HBL) is issued by that forwarder or NVOCC to the actual shipper. One MBL commonly covers cargo sold under one or many HBLs.
Because the carrier issued the master bill to your forwarder and has never seen the house bill number. Track with the container, booking, or MBL reference instead, which your forwarder can supply.
Both, in sequence. The carrier delivers against the master bill to the forwarder’s agent; the agent delivers to you against the house bill. Your rights sit on the house bill.
Track with the master bill or container →
Container tracking API for forwarders →
More in Bills of lading & documents: Bill of lading (B/L) · Telex release · Sea waybill · Switch bill of lading · Arrival notice · Delivery order (D/O) · Letter of credit (L/C) · Browse all 106 terms →