What shipping instructions are
Shipping instructions are the message in which the shipper tells the carrier or freight forwarder exactly what to print on the bill of lading. Not what to carry — the booking already settled that — but who appears as shipper, consignee and notify party, how the routing reads, how the cargo is described, whether the freight is prepaid or collect, and how many originals to issue. The carrier's documentation desk types the B/L from this document. Whatever you write here is what comes back.
That makes the SI the last cheap moment in a shipment. Up to the SI cut-off — usually a day or two before the vessel's cargo cut-off — you can change anything by sending a corrected instruction. After it, the particulars are with the carrier's system and every change is a bill of lading amendment: a fee, a queue, and on a negotiable B/L a set of originals that has to be physically retrieved and reissued before the bank will look at it.
It is not a contract of carriage and it is not a transport document. The B/L is both. The SI is the instruction that produces the B/L, which is why it has no standard legal form — FIATA publishes a model, every major line has its own portal form, and they all ask for the same eleven or so blocks because those are the blocks a bill of lading has.
What has to be on it
The parties, spelled the way they must appear on the B/L. The shipper is you, in your full legal name. The consignee is either a named party — a straight B/L, released to that party and nobody else — or the words "to order of" a bank, which makes the B/L negotiable and is how virtually every letter of credit shipment is consigned. Get this wrong in the wrong direction and you have either handed the cargo away before payment or created a document your buyer's bank cannot process. The notify party is a third, separate role: whoever the carrier telephones on arrival, which is normally the buyer's customs broker.
The routing, in the carrier's own vocabulary. Port of loading and port of discharge with their UN/LOCODEs — the five-character code that is how the port is actually identified in a manifest, not a city name that may map to three terminals. Place of receipt and place of delivery only if the carrier's responsibility genuinely starts inland or continues past the discharge port; naming them casually turns a port-to-port booking into a through movement the rate never covered.
The equipment and the cargo. Container numbers in ISO 6346 format, seals, tare and the verified gross mass. The goods described as customs and the buyer's bank will read them, with an HS code per line — the first six digits are the international part, and the destination classifies duty on that code and not on your description. Weights net and gross. No prices: this document goes to the carrier's documentation staff and persists in their system, and your unit price is nobody's business there.
The freight term and the issuance instructions. Prepaid or collect must agree with your Incoterm — under CFR, CIF, CPT, CIP, DAP, DPU and DDP you carry the main carriage, so the B/L must read prepaid — and then the number of originals, the number of copies, and any remark the buyer's bank has asked to see.
How it fails
The expensive failures are almost never exotic. A consignee named directly on an LC shipment that should have been consigned to the order of the issuing bank. A freight term contradicting the Incoterm, so a CIF sale arrives freight collect and the buyer refuses the cargo. A shipper's name that is the trading name on the SI and the legal name on the invoice — under UCP 600 the bank checks documents against each other, and data that conflicts is a discrepancy even when both statements are true.
Timing failures cost as much. The SI cut-off, the cargo cut-off, the VGM cut-off and the document cut-off are four different deadlines and they are not in the order people assume. SOLAS Chapter VI Regulation 2 makes a verified gross mass a condition of loading a packed container onto a ship: no VGM by the carrier's deadline and your box is rolled to the next vessel regardless of how good your SI was. Advance manifest filings run on their own clock — AMS for the United States, ENS under the EU's import control system, and equivalent regimes elsewhere — and they are filed before departure, not on arrival.
Then there is the description block, which fails quietly. A carrier will not verify what is inside a sealed container; the B/L carries a shipper's-load-stow-and-count clause precisely so the carrier is not bound by your count or your weights. That protects them, not you. If your SI describes the goods loosely and the L/C requires exact wording, the B/L reproduces the loose description, the bank raises a discrepancy on presentation, and the correction now involves a shipping line, a terminal and a courier rather than one email sent before the cut-off.
Where it sits in the document set
Read the pack in the order it is created and the SI stops looking like duplication. The proforma invoice is the offer your buyer takes to their bank. The letter of credit is written against that proforma. The commercial invoice and the packing list describe what actually shipped. The shipping instructions take the parts of all of that which the carrier needs, and only those parts, and hand them over so the bill of lading can be issued. The VGM declaration runs alongside it on the SOLAS track. The B/L comes back. The bank checks the B/L against the credit.
So the SI is a translation job, and the translation has to be lossless in one direction: every party name, port, description and reference on it must be reproducible on the commercial invoice and the packing list without a word changing. Under UCP 600 the documents are examined against each other as well as against the credit, and a B/L that says "Alexandria" where the credit says "Alexandria, Egypt" is the kind of thing that gets a presentation refused while the cargo sits on the water.
It is also the document that decides whether you keep control of the goods. Name a bank as "to order of" and the cargo can only be released against a properly endorsed original — that is your security, and it exists because of a line you typed on the SI. Ask for a sea waybill instead and the cargo is released to the named consignee on identification alone, with nothing to surrender and nothing to hold back. Both are correct choices in different deals. Neither is a choice you want made by whoever fills in the carrier's portal.
Common questions
What is the difference between shipping instructions and a bill of lading?
The SI is what you send the carrier; the B/L is what the carrier sends back. Your instructions have no legal effect on their own — they produce the B/L, which is the contract of carriage, the receipt for the goods and, if it is negotiable, the document of title. That is the whole reason the SI has to be exact: the carrier types the B/L from it, and once the SI cut-off passes, correcting the B/L means an amendment rather than a resend.
Who should be the consignee — my buyer or their bank?
It follows your payment terms, not your preference. Shipping under a letter of credit or documentary collection, the consignee is normally "to order of" the issuing or collecting bank: the cargo is then released only against a properly endorsed original B/L, and that is your security. Naming the buyer directly is a straight B/L — appropriate when you are paid in advance or dealing with a long-standing account, and a way of handing the goods over before payment in every other case. Whatever you decide, the credit will state it, and the B/L has to match the credit word for word.
When do shipping instructions have to be submitted?
By the carrier's SI cut-off for that sailing, which they publish with the booking and which is typically a little ahead of the cargo cut-off. Treat it as the real deadline of the shipment: after it, the particulars are already in the carrier's system and changing them is a bill of lading amendment. The VGM cut-off is separate and independent — SOLAS makes a verified gross mass a condition of loading, so a perfect SI does not save a container whose VGM missed its own deadline.
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