Docket documents screen: outstanding documents by container and supplier, each marked discrepancy, missing or awaited, with its due date.
Documents — what's verified, what's awaited, and by when.

House bill of lading vs master bill: which one is yours

A house bill of lading (HBL) is the bill an NVOCC or forwarder issues to the importer. The master bill (MBL) is the one the vessel operator issues to that NVOCC, who is the shipper on it. On a consolidated shipment CBP requires different parties on each: the house bill must name the foreign supplier as shipper, not the forwarder. Your free time and your recourse follow the house bill.

House bill of lading
The bill of lading an NVOCC or freight forwarder issues to an importer for cargo it has booked on somebody else's vessel. The master bill covers the same container between the vessel operator and the NVOCC, who appears on it as the shipper.
One container, two bills, different parties on eachCarrier on the document: Master bill (MBL) — The vessel operator; House bill (HBL) — The NVOCC. Shipper on the document: Master bill (MBL) — The NVOCC or forwarder; House bill (HBL) — The foreign supplier. Consignee: Master bill (MBL) — May be the NVOCC; House bill (HBL) — Who takes delivery. Importer is a party: Master bill (MBL) — no; House bill (HBL) — yes. Free time written in: Master bill (MBL) — The vessel operator's tariff; House bill (HBL) — The NVOCC's own tariff. Quantity declared as: Master bill (MBL) — Lowest packaging unit; House bill (HBL) — Lowest packaging unitMaster bill (MBL)House bill (HBL)Carrier on the documentThe vessel operatorThe NVOCCShipper on the documentThe NVOCC or forwarderThe foreign supplierConsigneeMay be the NVOCCWho takes deliveryImporter is a partyFree time written inThe vessel operator's tariffThe NVOCC's own tariffQuantity declared asLowest packaging unitLowest packaging unit
One container, two bills, different parties on each The rows are what CBP requires on a consolidated shipment's manifest. The importer is a party to the house bill only.

Two documents can describe the same container, and only one of them is yours.

A house bill of lading is the bill an NVOCC issues to the importer. An NVOCC is a non-vessel-operating common carrier, which includes most freight forwarders selling ocean carriage. A master bill of lading is the bill the vessel operator issues for the same box, and the party named as shipper on it is the NVOCC. The importer is not on it at all.

Most desks discover this when something needs chasing and the vessel operator declines to discuss the shipment at all.

The Federal Maritime Commission’s definition is unusually plain about the double role. Under 46 CFR § 515.2, an NVOCC is

a common carrier that does not operate the vessels by which the ocean transportation is provided, and is a shipper in its relationship with an ocean common carrier.

A carrier to you, a shipper to the ship. The same section lists “issuing bills of lading or other shipping documents” among the services it describes, so the house bill is not a courtesy copy. It is the contract of carriage the NVOCC sells.

Who contracts with whom on a consolidated shipmentForeign supplier → NVOCC → Vessel operatorForeign supplierNVOCCVessel operatorHouse billMaster bill
Who contracts with whom on a consolidated shipment Each arrow is a separate contract of carriage. A claim travels back along the arrow you signed, not along the whole chain.

The tariff rules say the same thing from the money side. 46 CFR § 520.2 defines a shipper to include “an NVOCC that accepts responsibility for payment of all charges applicable under the tariff or service contract”. On the master bill, your carrier is somebody else’s customer.

How to check a house bill against the master bill

This is the part a desk can do unaided, and CBP’s manifest rules are what make it checkable. 19 CFR § 4.7a(c)(4) sets out what the carrier must transmit “from the carrier’s ocean bills of lading, either master or house, as applicable”, and it requires different parties at each level.

The shipper. At master bill level on a consolidated shipment, the NVOCC, forwarder or container station is sufficient. For each house bill in that consolidation, the shipper must be “the identity of the foreign vendor, supplier, manufacturer, or other similar party”, and the regulation then says the quiet part out loud:

by contrast, the identity of the carrier, NVOCC, freight forwarder or consolidator is not acceptable

So a house bill that names your forwarder as the shipper is not a formatting preference. It means the party CBP expects to see, the actual supplier at a foreign address, is missing from the data filed about your cargo.

The consignee. At master bill level the NVOCC may be listed. On a house bill the consignee is “the party to whom the cargo will be delivered in the United States”. Where the goods move to order of a named party, that named party is reported as consignee and any other commercial party on the bill goes in the Notify Party field, which is why the arrival notice can reach a desk that is not the consignee.

The count. Both levels must be manifested at the lowest external packaging unit. Containers and pallets are, in CBP’s words, not acceptable manifested quantities: a container of ten pallets holding two hundred cartons is two hundred cartons. A house bill showing one container against a master bill showing cartons is not two views of the same truth.

The co-loading annotation. If your NVOCC handed the cargo to a second NVOCC, you are entitled to know on the document itself. 46 CFR § 520.11(c)(3):

An NVOCC which tenders cargo to another NVOCC for co-loading, whether under a shipper-to-carrier or carrier-to-carrier relationship, shall annotate each applicable bill of lading with the identity of any other NVOCC to which the shipment has been tendered for co-loading. Such annotation shall be shown on the face of the bill of lading in a clear and legible manner.

Four comparisons, all of them doable from two documents you already hold. None of them needs the vessel operator’s cooperation, which is convenient, because it is rarely offered.

What follows the house bill rather than the master

Three things, and each one costs money when the desk assumes otherwise.

Free time. The allowance that matters is the one in the contract you are party to, and on a house bill that is the NVOCC’s. Its carrier tariff is filed under part 520 and its free time may differ from the vessel operator’s on the identical box. Reading the wrong one is the mistake behind working out how to calculate demurrage charges from a figure nobody can hold you to. Where that figure sits in a service contract instead, it is not published at all.

Recourse. A claim travels back along the arrow you signed. What stands behind it is set by 46 CFR § 515.21: $75,000 of financial responsibility for an NVOCC in the United States, $150,000 for a registered non-US one, which is “strictly responsible for the acts and omissions of its employees and agents, wherever they are located”. A group or association covers its members at the lesser of the per-member amount or $3,000,000 in aggregate. Those are the figures standing behind every house bill that carrier has issued, not behind yours alone.

The terms, in advance. Under 46 CFR § 520.4(a)(5) a published tariff must include sample copies of any bill of lading “showing legible terms and conditions”. Section 520.11(a) adds the surety’s name and the bond number. So the document that will govern your cargo, and the pot of money behind the party issuing it, are both readable before the booking, in a filing rather than in an email you are waiting for.

The four questions, and when to ask them

Which bill will I be issued, house or master. The answer decides every row in the table above.

If it is a house bill, which tariff is my free time in, and is the figure in it or in a service contract I cannot read.

What is the issuing NVOCC’s bond number and surety, from its own tariff.

Has the cargo been co-loaded, and does the annotation appear on the face of my bill.

All four are answerable before the vessel sails and all four are usually answered after the invoice arrives. Chasing them on every shipment, from the booking rather than from the arrival notice, is the work Docket does: demurrage and detention software that counts from the bill you hold.

Questions traders ask

What is the difference between a house bill of lading and a master bill of lading?

Who the contract is between. A house bill of lading is issued by an NVOCC to the importer, so the NVOCC is the carrier on it. The master bill is issued by the vessel operator to that NVOCC, who appears on it as the shipper — 46 CFR 515.2 defines an NVOCC as a common carrier that does not operate the vessels and "is a shipper in its relationship with an ocean common carrier". One container therefore sits under two contracts with two different sets of parties, and the importer is party to only one of them.

How do you check a house bill against the master bill before release?

Compare the parties, the count and the co-loading annotation. On a consolidated shipment CBP requires the house bill's shipper to be the foreign vendor, supplier or manufacturer, and states that the identity of the carrier, NVOCC, freight forwarder or consolidator "is not acceptable" there — so a house bill naming your forwarder as shipper means the manifest data behind it is wrong. The consignee on a house bill is the party to whom the cargo will be delivered. The count must be the lowest external packaging unit, not the container. And where your NVOCC has handed the cargo to another NVOCC, 46 CFR 520.11(c)(3) requires that second carrier's identity to appear on the face of your bill.

Whose free time applies on a house bill of lading?

The NVOCC's, because the NVOCC is the carrier on that document. Its free time sits in its own published tariff, filed under 46 CFR part 520, not in the vessel operator's. The two can differ on the same container, and the importer has no contractual claim on the vessel operator's allowance because it is not a party to the master bill.

Who do I claim against if the cargo on a house bill is lost or overcharged?

The party that issued the bill — your NVOCC. What stands behind that claim is the financial responsibility the Federal Maritime Commission requires under 46 CFR 515.21: $75,000 for an NVOCC in the United States and $150,000 for a registered, non-US NVOCC. The surety's name and the bond number must be stated in the NVOCC's own tariff under 46 CFR 520.11(a), so both are checkable before you ship rather than after a claim.

Can I get a master bill instead of a house bill?

Only by booking directly with the vessel operator, which means being the shipper or consignee on its bill rather than buying space from an intermediary. A full container moving under a forwarder's booking will produce a house bill, because the forwarder is the carrier it contracted with. What you can do is read the house bill's terms in advance: 46 CFR 520.4(a)(5) requires a published tariff to include sample copies of any bill of lading "showing legible terms and conditions".

Sources

  1. 46 CFR § 515.2, Definitions — "Non-vessel-operating common carrier (NVOCC) means a common carrier that does not operate the vessels by which the ocean transportation is provided, and is a shipper in its relationship with an ocean common carrier"; NVOCC services "may include, but are not limited to" purchasing transportation from a common carrier for resale, payment of port-to-port or multimodal charges, entering into affreightment agreements with underlying shippers, and "issuing bills of lading or other shipping documents". Read via the eCFR versioner API at the 19 October 2026 issue · checked 2026-10-24
  2. 46 CFR § 515.21, Financial responsibility requirements — $50,000 for an ocean freight forwarder, $75,000 for a person in the United States acting as an NVOCC, and $150,000 for a registered NVOCC, which "shall be strictly responsible for the acts and omissions of its employees and agents, wherever they are located"; a group or association establishes financial responsibility at the lesser of the per-member amount or $3,000,000 in aggregate. Read via the eCFR versioner API at the 19 October 2026 issue · checked 2026-10-24
  3. 46 CFR § 520.2, Definitions — "Shipper means: (1) A cargo owner; (2) The person for whose account the ocean transportation of cargo is provided; (3) The person to whom delivery is to be made (e.g., consignee); (4) A shippers' association …; or (5) An NVOCC that accepts responsibility for payment of all charges applicable under the tariff or service contract"; and "Co-loading means the combining of cargo by two or more NVOCCs for tendering to an ocean common carrier under the name of one or more of the NVOCCs". Read via the eCFR versioner API at the 19 October 2026 issue · checked 2026-10-24
  4. 46 CFR § 520.4, Tariff contents — a published tariff must "State separately each terminal or other charge, privilege, or facility under the control of the carrier or conference and any rules that in any way change, affect, or determine any part or the total of the rates or charges" and "Include sample copies of any bill of lading showing legible terms and conditions, contract of affreightment, and/or other document evidencing the transportation agreement"; the organization record must state the organization type, "e.g., ocean common carrier (VOCC), conference (CONF), non-vessel-operating common carrier (NVOCC) or agent". Read via the eCFR versioner API at the 19 October 2026 issue · checked 2026-10-24
  5. 46 CFR § 520.11, Non-vessel-operating common carriers — an NVOCC must state in its tariff that it has furnished proof of financial responsibility, the manner of it, "the name and address of the surety company, insurance company, or guarantor" and "the number of its bond, insurance policy, or guaranty"; every NVOCC not in the United States must state its US legal agent for service of process; and on co-loading, "An NVOCC which tenders cargo to another NVOCC for co-loading, whether under a shipper-to-carrier or carrier-to-carrier relationship, shall annotate each applicable bill of lading with the identity of any other NVOCC to which the shipment has been tendered for co-loading. Such annotation shall be shown on the face of the bill of lading in a clear and legible manner." Read via the eCFR versioner API at the 19 October 2026 issue · checked 2026-10-24
  6. 19 CFR § 4.7a(c)(4), Inward manifest; Cargo Declaration data elements — element (v), "The numbers and quantities from the carrier's ocean bills of lading, either master or house, as applicable", manifested as the lowest external packaging unit; element (viii), the shipper from all bills of lading, where "At the master bill level, for consolidated shipments, the identity of the Non Vessel Operating Common Carrier (NVOCC), freight forwarder, container station or other carrier is sufficient; for non-consolidated shipments, and for each house bill in a consolidated shipment, the identity of the foreign vendor, supplier, manufacturer, or other similar party is acceptable … by contrast, the identity of the carrier, NVOCC, freight forwarder or consolidator is not acceptable"; element (ix), the consignee, where "For consolidated shipments, at the master bill level, the NVOCC, freight forwarder, container station or other carrier may be listed as the consignee. For non-consolidated shipments, and for each house bill in a consolidated shipment, the consignee is the party to whom the cargo will be delivered in the United States". Read via the eCFR versioner API at the 19 October 2026 issue · checked 2026-10-24