This is where the Learning Path stops being general and starts being practical. Cargo surveys are the single most common reason a marine surveyor gets called — every bulk cargo shipment, every container claim, every damaged consignment eventually needs an independent answer to one question: whose fault was this, and how much is it actually worth?
What You'll Learn in This Lesson
- Why cargo surveys exist, and what's actually at stake in a cargo claim
- The five types of cargo survey, and when each one applies
- The Before / During / After workflow for a professional cargo survey
- The core documentation trail — Bill of Lading, Mate's Receipt, Manifest, and Survey Report
- The most common types of cargo damage, and how to identify them
Introduction to Cargo Surveys, and Why They Matter
A cargo survey exists to answer a question with real money attached: was the cargo in good order when it was loaded, and is it still in that condition when it's discharged? Whenever the answer is no, a cargo survey's findings usually determine who pays — the carrier, the shipper, the insurer, or some combination. Cargo claims run into the billions industry-wide every year, and in almost every one of them, the surveyor's report is the single most influential piece of evidence in deciding the outcome.
The Five Types of Cargo Survey
| Survey Type | When It Happens | What It Establishes |
|---|---|---|
| Loading Survey | During loading, at origin | Cargo condition and quantity at the moment it comes aboard |
| Discharge Survey | During discharge, at destination | Whether the cargo arrived in the condition and quantity it was loaded in |
| Damage Survey | Whenever damage or loss is suspected or reported | Cause, extent, and likely responsibility for the damage |
| Quantity Survey | Alongside loading or discharge | Whether the delivered quantity matches the documented quantity |
| Condition Survey | Independent of a specific voyage | General cargo or hold condition, often for insurance purposes |
A discharge survey compared against the original loading survey is what actually proves whether something went wrong in transit — without both ends of that comparison, a claim has no real baseline to argue from.
The Survey Workflow: Before, During, After
Before: reviewing the Bill of Lading and Mate's Receipt to know what's expected, checking hold cleanliness and readiness where relevant, and confirming the survey scope with whoever commissioned it. During: recording condition and quantity as cargo is handled, photographing anything unusual immediately, and noting stowage practices that could affect the cargo later in the voyage. After: comparing findings against the loading documentation, drafting a report that stands on its own without needing the surveyor present to explain it, and retaining evidence in case the claim is disputed.
Inspection Equipment
A cargo surveyor's kit is deliberately simple but precise: a moisture meter for grain, timber, or other hygroscopic cargoes; a thermometer for temperature-sensitive goods; a camera for photographic evidence; sampling equipment for bulk commodities; and basic measuring tools for verifying dimensions or ullage. The equipment matters less than using it consistently — a moisture reading taken once, in one spot, proves far less than a documented sampling pattern across multiple points in the cargo.
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Cargo Documentation: The Paper Trail That Decides Claims
| Document | What It Proves |
|---|---|
| Bill of Lading | The contract of carriage, and the quantity/condition the carrier acknowledged receiving |
| Mate's Receipt | The ship's own preliminary acknowledgement of cargo received, before the Bill of Lading is finalised |
| Cargo Manifest | The full list of cargo aboard, used to reconcile what should be where |
| Survey Report | The surveyor's independent findings — the document a claim is actually argued from |
Whenever these documents disagree with each other — a Bill of Lading claiming "clean on board" against a discharge survey showing damage — that gap is usually where a genuine claim either gets proven or falls apart.
Common Cargo Damage
- Water Damage — from condensation ("ship's sweat"), rain ingress during cargo operations, or hold leakage
- Rust — on steel or metal cargo, often from inadequate protection or moisture exposure during transit
- Contamination — cross-contamination from a previous cargo in an inadequately cleaned hold, or from an adjacent incompatible cargo
- Shortage — a quantity discrepancy between what was loaded and what was discharged, which may or may not indicate actual loss
- Improper Stowage — cargo damaged by shifting, crushing, or incompatible stowage arrangements during the voyage
Case Study: A Disputed Shortage Claim
Scenario: A bulk grain cargo shows a 1.2% shortage between the loading survey and the discharge survey. The receiver claims this proves cargo loss in transit; the carrier argues it's within normal moisture-loss tolerance.
Exercise: Identify the Cargo Damage
Read each finding and identify the most likely damage type.
1. Steel coils show orange discoloration and pitting after a long voyage through humid conditions.
2. Bagged cargo near the hatch coaming is wet, while cargo deeper in the hold is completely dry.
3. A discharge survey shows 200 fewer bags than the loading survey and Bill of Lading recorded.
4. A food-grade cargo has absorbed a chemical odor from a previous cargo carried in the same hold.
5. Palletised cargo has crushed edges and collapsed stacking, consistent with how it was loaded rather than any external event.
Best Practices
- Loading and discharge surveys always compared directly, not assessed in isolation
- Sampling and moisture readings taken at multiple points, not a single spot
- Every unusual finding photographed at the time it's found
- Documentation trail (Bill of Lading, Mate's Receipt, Manifest) cross-checked against survey findings
- Shortage claims checked against known tolerance ranges for that specific commodity
- Report written to stand on its own, without needing the surveyor present to explain it
Handling a Cargo Claim Right Now?
Talk to an IMT advisor about independent cargo survey support for an active or pending claim.
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Frequently Asked Questions
What is a cargo survey?
An independent inspection recording cargo condition and quantity at loading, discharge, or in response to a damage claim.
Who orders cargo surveys?
Shipowners, charterers, cargo interests, P&I Clubs, and cargo insurers, depending on who needs to establish condition or investigate a claim.
When should a cargo survey be carried out?
At loading and discharge as a matched pair whenever possible, and immediately whenever damage or shortage is suspected.
What documents are required for a cargo survey?
The Bill of Lading, Mate's Receipt, and Cargo Manifest are the core reference documents; the surveyor's own Survey Report is the primary output.
What happens after cargo damage is found?
The surveyor documents cause and extent, the report is used to support or contest a claim, and responsibility is typically allocated between carrier, shipper, or insurer based on the findings.
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