Master Bill of Lading
Also known as: MBL, Master B/L, Carrier Bill of Lading
Definition
A master bill of lading (MBL) is the contract and receipt issued by an ocean carrier (shipping line) directly to a freight forwarder or NVOCC. It covers an entire container that may contain multiple shippers’ cargo consolidated under separate house bills of lading.
Master B/L in Consolidation
The Hierarchy
Ocean Carrier
│
└── Issues MASTER B/L to Forwarder
│
└── Forwarder issues HOUSE B/Ls to Shippers
│
├── House B/L 1 (Shipper A)
├── House B/L 2 (Shipper B)
└── House B/L 3 (Shipper C)
Example
One 40’ container with:
- MBL: Freight forwarder as shipper, destination agent as consignee
- HBL 1: Company A’s 10 pallets
- HBL 2: Company B’s 5 pallets
- HBL 3: Company C’s 8 pallets
MBL vs. HBL Comparison
| Aspect | Master B/L | House B/L |
|---|---|---|
| Issued by | Ocean carrier | Freight forwarder |
| Issued to | Forwarder/NVOCC | Actual shipper |
| Shipper shown | Forwarder | Actual shipper |
| Consignee shown | Destination agent | Actual buyer |
| Tracks | Entire container | Individual shipment |
| Used for | Carrier contract | Shipper contract |
Information on Master B/L
Parties Listed
- Shipper: Freight forwarder (origin)
- Consignee: Freight forwarder’s agent (destination)
- Notify: May be agent or actual parties
Cargo Description
- Total container count
- “Said to contain” or “STC”
- Seal numbers
- Container numbers
- Gross weight of consolidation
Example MBL Description
1 X 40' HC CONTAINER
CONTAINER #: MSCU1234567
SEAL #: ABC12345
SAID TO CONTAIN: CONSOLIDATED CARGO
GROSS WEIGHT: 18,500 KGS
Why Use Master/House B/L Structure
Benefits for Forwarders
- Control over cargo release
- Consolidation efficiency
- Margin on shipping
- Service differentiation
Benefits for Shippers
- Access to consolidation rates
- Single point of contact
- Combined origin services
- Simpler documentation
How Pricing Works
Carrier charges forwarder: $2,000 (full container)
Forwarder charges shippers:
- Shipper A: $800
- Shipper B: $600
- Shipper C: $700
- Total: $2,100
- Forwarder margin: $100
Document Flow
At Origin
- Shippers book with forwarder
- Cargo delivered to CFS (Container Freight Station)
- Forwarder consolidates into container
- Forwarder books with shipping line
- Shipping line issues MBL
- Forwarder issues HBLs to each shipper
At Destination
- Container arrives
- Destination agent presents MBL to carrier
- Carrier releases container
- Container deconsolidated at CFS
- Agent releases cargo against HBLs
- Individual shipments cleared and delivered
Tracking with MBL
Carrier Tracking
- Use MBL number on shipping line website
- Shows container movement
- Vessel schedules and arrivals
- Port operations status
Limitations
- Doesn’t show individual HBL shipments
- Forwarder tracks HBL level
- Ask forwarder for detailed updates
- Use forwarder’s tracking portal
MBL Release Process
Standard Process
- Shipper pays forwarder
- Forwarder instructs origin office
- Origin office arranges MBL release
- Destination agent claims container
- HBL cargo released individually
Telex Release
- MBL surrendered at origin
- Electronic release to destination
- Faster than sending paper
- Most common for consolidations
Common Issues
MBL/HBL Mismatch
- Container numbers don’t match
- Weight discrepancies
- Piece counts differ
- Causes customs delays
Release Timing
- MBL released but HBL held (shipper payment)
- Container stuck at port
- Storage charges accumulate
- Communication critical
Liability Questions
- Carrier liable under MBL terms
- Forwarder liable to shipper under HBL
- Back-to-back liability structure
- Claims flow through forwarder
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