Inherent Vice in Cargo Insurance: When the Exclusion Applies
Interlink編集部Inherent Vice and Insurance Exclusion concerns loss, damage or expense caused by an inherent vice or characteristic of the insured cargo itself.
ICC(A), ICC(B) and ICC(C) 1/1/09 contain a common Clause 4.4 exclusion for loss, damage or expense caused by inherent vice or nature of the subject-matter insured.
The mere discovery of decay, deterioration, rust, mould, self-heating, fermentation, separation or other quality damage does not automatically establish Clause 4.4. The analysis must determine whether the loss was caused by the nature of the cargo itself or by an external event such as entry of sea water, rain wetting, refrigeration failure, interruption of power, collision or failure of a container.
Ordinary leakage, ordinary loss in weight or volume and ordinary wear and tear are addressed separately under Clause 4.2. Insufficient or unsuitable packing or preparation is addressed under Clause 4.3, while loss caused by delay is addressed under Clause 4.5. Those issues may overlap factually but should not be treated as a single inherent-vice exclusion.
This article focuses on ICC 1/1/09 Clause 4.4 and examines its causation structure, competing external events, its relationship with Clauses 4.2, 4.3 and 4.5, cargo-specific issues, evidence, loss mitigation and preservation of third-party rights.
Scope of This Article
| Item | What This Article Covers | What Other Articles Cover |
|---|---|---|
| ICC Clause 4.4 | The analytical structure of the inherent vice or nature exclusion | Excluded Losses under Cargo Marine Insurance examines the overall exclusion structure |
| ICC(A) | Why Clause 4.4 remains relevant under broad ICC(A) cover | ICC(A) examines the coverage structure and other principal exclusions |
| Ordinary loss and leakage | The distinction between Clause 4.4 and Clause 4.2 | Excluded Losses under Cargo Marine Insurance examines Clause 4.2 |
| Insufficient packing | How cargo characteristics and deficient preparation may compete as causes | Insufficient Packing and Insurance Exclusion examines Clause 4.3 |
| Delay | The relationship between deterioration through passage of time and Clause 4.4 | Delay Damage examines Clause 4.5 |
| Frozen and chilled cargo | Distinguishing inherent quality characteristics from a temperature-control casualty | Temperature-controlled cargo articles examine temperature conditions and endorsements |
| Used cargo | Distinguishing inherent condition from pre-existing damage and ageing | Used Cargo and evidential articles examine pre-shipment condition |
| Carrier liability | Separating cargo-policy exclusions from third-party liability | Carrier Liability and Subrogation examine recovery against responsible parties |
| Post-casualty response | Cause investigation, mitigation, evidence and third-party rights | Claims and recovery articles examine procedural requirements |
Basic Structure of Clause 4.4
Clause 4.4 is concise when compared with Clause 4.3. It does not contain separate wording concerning the identity of a particular operator, timing of an act or the Assured's knowledge. The central issue is causation: whether the relevant loss, damage or expense was caused by inherent vice or nature of the subject-matter insured.
| Element | What to Confirm | Practical Significance | Main Evidence |
|---|---|---|---|
| Existence of loss | The actual decay, rust, mould, deterioration, self-heating or other damage | First establish what actually happened | Photographs, testing and Survey Report |
| Nature of the cargo | Physical, chemical and biological characteristics and quality limitations | Identify the cargo's internal tendency to change or deteriorate | Specifications, SDS, quality certificates and manufacturer data |
| Pre-shipment condition | Moisture, temperature, freshness, rust, quality and existing deterioration | Determine whether the cause was already present before transit | Pre-shipment photographs, inspection and quality testing |
| Transit environment | Temperature, humidity, duration, ventilation and ordinary environmental variation | Assess whether the cargo could deteriorate from its own nature under those conditions | Temperature and humidity logs and storage records |
| External event | Water entry, machinery failure, loss of power, collision or container failure | Identify a cause independent of the cargo's own nature | Casualty reports, machinery logs and container photographs |
| Causation | Whether the internal characteristic or the external event caused the particular loss | Do not apply Clause 4.4 merely from the physical result | Chronology, expert evidence and data logs |
| Multiple causes | Whether an external event activated or accelerated an inherent characteristic | The analysis may require more than a binary choice | Casualty evidence, scientific testing and expert opinion |
Distinguishing Clauses 4.2, 4.3, 4.4 and 4.5
Facts surrounding an inherent-vice dispute often appear to overlap with other general exclusions.
| Clause or Issue | Main Question | Typical Example | Distinction from Clause 4.4 | Main Evidence |
|---|---|---|---|---|
| Clause 4.2 | Ordinary leakage, ordinary loss in weight or volume or ordinary wear and tear | Ordinary evaporation, ordinary weight loss or wear | A separate provision from damage caused by inherent vice or nature | Normal tolerance, weight, volume and historical data |
| Clause 4.3 | Insufficient or unsuitable packing or preparation | Inadequate moisture protection, unsuitable container or securing | The deficiency lies in packing or preparation rather than the cargo itself | Packing design, operator, timing and causation |
| Clause 4.4 | Inherent vice or nature of the cargo | Self-heating, spontaneous fermentation or inherent deterioration | The causal characteristic exists within the cargo itself | Cargo characteristics, pre-shipment condition and causation |
| Clause 4.5 | Loss caused by delay | Deterioration after prolonged delay or missing a usable period | Determine whether passage of time or delay is the causal mechanism | Planned and actual schedule and product life |
| Pre-existing damage | Damage that existed before the insured transit | Old rust, scratches or malfunction of used machinery | Before reaching Clause 4.4, the claimant must establish new transit loss | Pre-shipment photographs, inspection and maintenance records |
For example, a reduction in the weight of liquid cargo may involve ordinary evaporation under Clause 4.2, a change caused by the chemical nature of the cargo under Clause 4.4, or abnormal leakage caused by damage to the container. The applicable clause depends on the actual cause.
Relationship with MIA 1906 Section 55
MIA 1906 Section 55(2)(c) also refers to ordinary wear and tear, ordinary leakage and breakage, and inherent vice or nature of the subject-matter insured as excluded causes under English marine insurance law.
The ICC 1/1/09 wording, however, separates ordinary leakage, ordinary loss in weight or volume and ordinary wear and tear in Clause 4.2 from inherent vice or nature in Clause 4.4.
In practice, those categories should therefore not be collapsed into a single description such as “natural loss.” The actual incorporated wording and the particular causal mechanism should be identified.
Distinguishing External Events from Inherent Characteristics
| Visible Loss | Facts Suggesting an External Event | Facts Suggesting Inherent Nature | Important Evidence |
|---|---|---|---|
| Rust on metal products | Sea-water entry, rain wetting, container damage or warehouse leakage | Pre-shipment moisture, corrosive characteristics or deterioration under ordinary environmental conditions | Salt testing, pre-shipment photographs, container condition and treatment records |
| Food deterioration | Reefer failure, power interruption or abnormal temperature | Pre-shipment quality, maturity, product life and inherent deterioration | Temperature logs, production date, quality evidence and inspection |
| Mould on wood, paper or textiles | Rain wetting, leakage or container damage | High initial moisture content, hygroscopic nature or internal moisture | Moisture content, humidity, packing and storage records |
| Self-heating of agricultural cargo | External heating or abnormal water entry | Moisture, respiration, fermentation or another internal process | Pre-loading testing, temperature, moisture and ventilation records |
| Chemical deterioration | Abnormal temperature, contamination or container failure | Chemical instability or reaction through passage of time | SDS, specification, temperature and composition testing |
| Deterioration of frozen cargo | Power failure, machinery failure or setting error | Pre-shipment quality, inadequate pre-cooling or limited product life | Temperature logs, machinery data, loading temperature and quality testing |
| Malfunction of used machinery | Dropping, collision or abnormal vibration | Wear, age-related deterioration, existing rust or malfunction | Pre-shipment Survey, operating records and casualty evidence |
Where an External Event Activates or Accelerates an Inherent Characteristic
Actual cargo losses are not always capable of being classified simply as either an external casualty or inherent vice.
Metal naturally has the capacity to corrode, but severe sea-water entry through a damaged container may cause rapid corrosion. Food naturally deteriorates over time, but interruption of refrigeration may cause rapid physical deterioration within a short period.
In those situations, the mere existence of an inherent characteristic does not by itself resolve the Clause 4.4 issue. The nature of the external event, its effect on the cargo, the time between the event and damage, and the deterioration that would otherwise have occurred should be investigated, with causation determined under the actual wording and governing law.
| Loss | Possible External Cause | Possible Internal Cause | Main Analytical Question | Evidence |
|---|---|---|---|---|
| Rapid rusting | Sea-water entry | Corrosive nature of metal | To what extent did external water cause or accelerate the corrosion? | Salt evidence, wetting pattern and corrosion development |
| Frozen food deterioration | Loss of power | Natural food deterioration | What is the chronological connection between temperature abnormality and deterioration? | Temperature log and quality testing |
| Mould on timber | Rain-water entry | High initial moisture | Was external water or pre-shipment moisture the material source? | Moisture readings, wetting marks and packing |
| Chemical separation | Abnormal high temperature | Chemical instability | Would the product have changed under normal conditions? | Temperature, chemical analysis and specification |
| Agricultural self-heating | Water entry or ventilation failure | Moisture, respiration and fermentation | How did pre-loading condition interact with the transit environment? | Moisture, temperature and ventilation data |
Cargo-Specific Clause 4.4 Issues
| Cargo Type | Common Loss | Cargo Characteristics to Review | External Events to Review |
|---|---|---|---|
| Food and perishables | Decay, fermentation, discolouration and quality loss | Freshness, maturity, production date and product life | Temperature deviation, power failure and storage abnormality |
| Metal products | Rust, corrosion and discolouration | Material, pre-shipment moisture, surface condition and corrosion tendency | Sea-water or rain-water entry and warehouse leakage |
| Wood, paper and textiles | Mould, warping and discolouration | Moisture content, hygroscopic characteristics and pre-shipment storage | Leakage, rain wetting and abnormal humidity |
| Liquid cargo | Deterioration, separation and quantity reduction | Volatility, chemical stability and ordinary loss characteristics | Leakage, container damage and abnormal temperature |
| Powders, agricultural products and feed | Caking, fermentation, self-heating and infestation | Moisture and biological or chemical properties | Water entry, external heating and ventilation abnormality |
| Frozen and chilled cargo | Thawing, deterioration and loss of freshness | Loading temperature, quality, pre-cooling and product life | Refrigeration failure, power interruption and setting error |
| Chemicals | Separation, solidification, reaction and discolouration | Stability, storage requirements and shelf life | Abnormal temperature, contamination and container casualty |
| Used machinery and equipment | Rust, wear and malfunction | Existing condition, age and maintenance | Dropping, collision and new wetting |
How to Analyse Rust Losses
Rust is a common loss in which Clause 4.4 may be raised, but the proposition that “metal rusts naturally” is not by itself sufficient to determine the exclusion.
Possible causes should be separated, including:
- rust existing before shipment;
- moisture already present within the cargo or packing;
- humidity changes during ordinary transit;
- moisture or anti-rust preparation;
- entry of sea water or rain water; and
- container or warehouse leakage.
Salt testing, distribution of corrosion, wetting marks, container damage, pre-shipment photographs and anti-rust treatment records should be considered together to distinguish inherent cargo characteristics, Clause 4.3 packing or preparation issues and external casualties.
How to Analyse Frozen and Chilled Cargo
Poor quality on arrival does not itself identify the cause of loss in frozen or chilled cargo.
Where no refrigeration failure, power interruption or abnormal set point is identified and the recorded transit temperature remains appropriate, the analysis should consider pre-shipment quality, pre-cooling, production date, remaining product life and the natural characteristics of the cargo.
Conversely, where a clear machinery or power failure is followed by a rapid rise in cargo temperature and deterioration, causation involving the external event must be examined rather than relying solely on inherent nature.
Temperature records are important but are not always conclusive. Sensor position, supply air, return air, cargo core temperature, pre-loading temperature, pre-cooling evidence and quality testing may all be material.
Delay and Inherent Vice
Delay and inherent characteristics may both become relevant where food or another time-sensitive cargo has a limited useful life.
If a voyage is extended by ten days and the cargo deteriorates through the ordinary passage of time, both Clause 4.5 and Clause 4.4 may require consideration depending on the facts.
Where a refrigeration failure occurs during the delay and creates an abnormal temperature excursion, however, a separate external casualty must also be investigated.
The analysis should therefore avoid reducing the issue to either “it deteriorated because it was late” or “it was perishable, so it is excluded.” Delay, inherent characteristics and any external event should be examined separately.
Used Cargo — Distinguishing Pre-Existing Damage from Clause 4.4
Used machinery, vehicles and equipment may already have rust, wear, deformation or operational defects before shipment.
That does not automatically create a Clause 4.4 issue. The first question is whether new loss or damage occurred during the insured transit.
If new deterioration is established, the analysis can then consider whether it progressed because of age-related or inherent characteristics or because of wetting, impact or another external event during transit.
Pre-shipment Survey, pre-shipment photographs, maintenance records, operational testing, arrival photographs and expert inspection are particularly important.
Clause 4.4 Application Flow
- Confirm the policy and applicable ICC.
Review ICC(A), ICC(B), ICC(C), the wording version and special terms. - Identify the cargo precisely.
Confirm composition, specification, use, production date and other relevant characteristics. - Establish the actual damage.
Document decay, rust, mould, self-heating, separation or other deterioration. - Establish pre-shipment condition.
Review quality, moisture, temperature, rust, freshness and existing deterioration. - Identify inherent characteristics.
Determine how the cargo may naturally change or deteriorate under particular conditions. - Establish the ordinary transit environment.
Review temperature, humidity, duration, ventilation and storage. - Investigate external events.
Look for water entry, power interruption, machinery failure, collision or container damage. - Construct a chronology.
Organise shipment, transport, abnormalities and discovery of damage. - Review Clause 4.2 separately.
Do not confuse ordinary leakage or ordinary weight loss with Clause 4.4. - Review Clause 4.3 separately.
Determine whether deficient packing or preparation rather than the cargo itself caused the loss. - Review Clause 4.5 separately.
Determine whether delay or passage of time is the causal issue. - Analyse multiple causes.
Consider whether an external event activated or accelerated an inherent characteristic. - Mitigate the loss and preserve evidence.
Prevent further deterioration while preserving samples and data. - Preserve third-party rights.
Notify carriers, warehouses and temperature-control operators where appropriate. - Submit the evidence for insurance review.
Organise the information required to analyse causation under Clause 4.4.
Cases That Frequently Cause Practical Problems
| Case | Main Issue | Evidence | Decision Point | Initial Action |
|---|---|---|---|---|
| Rust on metal components | Sea-water wetting versus cargo moisture or inherent characteristics | Salt testing, pre-shipment photographs and container condition | Do not determine Clause 4.4 from the existence of rust alone | Preserve rust and moisture samples |
| Frozen food deterioration | Equipment casualty versus pre-shipment quality or inherent deterioration | Temperature logs, pre-cooling and quality certificate | Review cargo-side factors even where temperature appears normal | Secure raw temperature data and samples |
| Mould on timber | External wetting versus high initial moisture | Moisture content, humidity and leakage evidence | Identify the source of moisture | Measure moisture promptly |
| Self-heating agricultural cargo | Internal fermentation versus external environmental abnormality | Moisture, temperature, ventilation and pre-loading test | Begin with pre-loading condition | Prioritise safety and preserve samples |
| Loss in liquid cargo weight | Ordinary loss versus abnormal leakage | Weight, container, seal and historical data | Distinguish Clause 4.2 from Clause 4.4 | Preserve container and measurement data |
| Chemical separation | Inherent instability versus abnormal temperature | SDS, specification, temperature and chemical testing | Establish stability under ordinary conditions | Preserve representative samples |
| Rust or malfunction in used machinery | Existing condition versus new transit damage | Pre-shipment Survey and maintenance record | Establish new loss before analysing Clause 4.4 | Inspect before repair |
| Food quality loss following delay | Delay versus cargo characteristics versus another casualty | Schedule, temperature and product life | Separate Clause 4.4 from Clause 4.5 | Secure quality evidence and casualty chronology |
Application Scenario 1 — Rust on Metal Components with No Recorded External Wetting
Scenario: Precision metal components insured for JPY 38 million are exported from Kobe to Rotterdam under ICC(A).
On unpacking, substantial rust is found on several components and repair or replacement is estimated at JPY 7 million. The container has no obvious hole or recorded water-entry incident, and the carrier reports no known wetting casualty.
The insurer raises the possibility that residual moisture on the cargo or its susceptibility to corrosion under ordinary transit conditions caused the damage and considers Clause 4.4.
The shipper argues that unobserved condensation or external moisture during transit may have caused the rust.
The existence of rust alone does not determine Clause 4.4. The investigation should review pre-shipment surface condition, anti-rust treatment, moisture within the packing, chloride testing, container condition, ambient humidity and the distribution of corrosion.
If inadequate moisture or anti-rust preparation is identified, Clause 4.3 may also become relevant. Inherent nature and deficient preparation should not be merged into a single exclusion without analysing the contractual basis of each.
Application Scenario 2 — Frozen Food Deteriorates Despite Apparently Normal Temperature Records
Scenario: Frozen seafood insured for JPY 75 million is shipped from Singapore to Tokyo.
After arrival, part of the cargo shows discolouration and quality deterioration, and the cargo owner claims JPY 22 million.
The reefer records show no substantial abnormality in set point, supply air or return air, and no machinery failure or power interruption is recorded.
The insurer therefore examines pre-shipment quality, pre-cooling, time since production and the inherent product-life characteristics of the cargo under Clause 4.4.
Normal reefer data should not itself determine the exclusion. Pre-loading cargo temperature, production date, freezing history, quality testing, storage before loading and arrival inspection should also be examined.
If cargo-core measurements or an independent data logger reveal an abnormality not shown by the reefer machinery record, the possibility of an external temperature-control problem should be reconsidered.
Application Scenario 3 — Used Machinery with Uncertain Existing Deterioration
Scenario: Used industrial machinery insured for JPY 18 million is exported from Osaka to Jakarta.
On arrival, the buyer identifies operational failure, surface rust and electrical defects and claims repair costs of JPY 5 million.
Only limited external photographs were taken before shipment, and no detailed operating test or Pre-shipment Survey was performed.
The first question is therefore not Clause 4.4 but whether new loss or damage during the insured transit can be established.
If new damage is demonstrated, the next issue is whether it progressed from age-related deterioration or existing rust, or whether it was caused by impact, wetting or abnormal vibration during transit.
Used cargo requires separate analysis of pre-existing condition, inherent characteristics and new transit damage. Combining those questions can lead to an incorrect Clause 4.4 analysis.
Freight Forwarder Involvement
These Standard Five Classifications are not legal classifications established by statute or universally accepted by the industry. They are an analytical framework used in this series to organize the scope of a freight forwarder's contractual and operational involvement.
| Standard Five Classifications | Typical Involvement | Connection with Inherent Vice | Limit to Confirm | Main Action |
|---|---|---|---|---|
| 1. Simple Intermediary | Connects the shipper, insurer and carrier | Transmits cargo, temperature and quality information | Should not independently determine technical cargo characteristics or the exclusion | Transmit material information accurately |
| 2. Cargo Transportation Service Provider | Performs pickup, storage, temperature control or handling | The transit environment may be relevant to the deterioration | Insurance exclusion and operational responsibility are separate questions | Preserve temperature, storage and work records |
| 3. NVOCC / House B/L Issuer | Issues a House B/L and acts as Contracting Carrier | May face transport liability for custody and handling | Clause 4.4 does not automatically eliminate carrier liability | Review House B/L, casualty stage and handling records |
| 4. Door-to-Door Single Contractor | Contracts for the whole transport chain | Integrates temperature and storage information across multiple stages | Door-to-door contracting does not itself guarantee cargo quality | Organise records for each stage and subcontractor |
| 5. Agent / Coordinator for Specific Operations | Coordinates local inspection, storage or survey | Supports collection of quality, temperature and casualty evidence | Should not exceed delegated authority by deciding cause or coverage | Secure local inspection and official evidence promptly |
The Standard Five Classifications do not by themselves determine Clause 4.4 or legal liability.
The actual analysis should also determine whether the freight forwarder acted as Contracting Carrier, Actual Carrier or merely as an arranger, and the extent of its responsibility for temperature control, storage or communication of cargo information.
Documents to Review After a Casualty
| Document | What to Confirm | Main Purpose | Caution |
|---|---|---|---|
| Policy and Certificate | ICC, version, endorsements and duration | Establish applicable insurance terms | Do not rely only on the name of the condition |
| Cargo specification and SDS | Physical and chemical characteristics and storage requirements | Identify inherent characteristics | A generic product name may be insufficient |
| Pre-shipment photographs | Rust, mould, appearance and existing damage | Establish pre-shipment condition | Especially important for metal and used cargo |
| Quality certificate and inspection | Freshness, moisture, composition and quality | Establish shipment quality | Confirm test time and sampling location |
| Production and expiry information | Remaining product life | Assess ordinary deterioration over time | Consider the remaining life at shipment |
| Temperature and humidity data | Transit and storage environment | Identify external environmental abnormality | Review sensor position, missing data and accuracy |
| Reefer data | Set point, measurements, alarms and power | Investigate temperature-control casualty | Air readings may differ from cargo-core temperature |
| Container and warehouse records | Leakage, damage and storage conditions | Identify external events | Inspect before return or repair where possible |
| Packing records | Moisture, anti-rust and waterproof preparation | Review the relationship with Clause 4.3 | Do not merge Clause 4.3 and Clause 4.4 |
| Survey Report | Condition, cause and extent of loss | Support causation analysis | Distinguish confirmed facts from inference |
Common Misunderstandings
| Misunderstanding | Actual Practice | Practical Caution |
|---|---|---|
| Rust, decay or mould automatically means Clause 4.4 applies | The same physical result can be caused by an external event. | Investigate cause rather than the result alone. |
| ICC(A) covers inherent vice | ICC(A) contains Clause 4.4. | Do not interpret All Risks as unlimited cover. |
| Any external event prevents Clause 4.4 from being relevant | External and inherent causes may compete and require causation analysis. | Organise multiple causes chronologically. |
| Every natural reduction in cargo quantity is Clause 4.4 | Ordinary leakage and ordinary loss in weight or volume are addressed under Clause 4.2. | Distinguish Clause 4.2 from Clause 4.4. |
| Rust caused by inadequate moisture protection is always Clause 4.4 | Deficient packing or preparation may raise Clause 4.3. | Distinguish cargo characteristics from packing. |
| Normal reefer records automatically prove inherent vice | Sensor position, pre-shipment quality and cargo-core temperature may also be material. | Do not decide from one data source alone. |
| Deterioration following delay is always inherent vice | The Clause 4.5 delay exclusion may also require analysis. | Separate passage of time from cargo characteristics. |
| Malfunction of used machinery is inherent vice | First determine whether the condition was pre-existing or new transit damage. | Establish pre-shipment condition. |
| If the cargo policy applies Clause 4.4, the carrier cannot be liable | Insurance exclusions and carrier liability are separate legal questions. | Preserve third-party rights. |
| A freight forwarder can conclusively decide whether deterioration is inherent vice | Technical causation may require the insurer, surveyor, manufacturer or laboratory. | Separate factual assistance from the final determination. |
Decision Checklist
| Stage of Review | Party to Confirm With | What to Confirm | Action If There Is a Problem |
|---|---|---|---|
| Placement | Shipper, insurer and insurance intermediary | Cargo characteristics, product life, temperature requirements and special terms | Refer unusual cargo to underwriting in advance |
| Before shipment | Shipper, manufacturer and inspection company | Quality, moisture, temperature and existing damage | Preserve inspection, photographs and quality evidence |
| Discovery of loss | Cargo owner, warehouse and delivery company | Extent of rust, mould, decay or deterioration | Preserve photographs and samples before disposal or processing |
| External casualty review | Carrier, warehouse and surveyor | Water entry, impact, temperature abnormality or machinery failure | Obtain casualty and equipment records promptly |
| Cargo-characteristics review | Manufacturer, quality personnel and laboratory | Natural deterioration, heating, fermentation or corrosion characteristics | Obtain technical data or scientific testing |
| Clause 4.2 review | Insurer and manufacturer | Normal leakage or weight-loss tolerance | Separate the issue from Clause 4.4 |
| Clause 4.3 review | Shipper, packing contractor and insurer | Moisture, anti-rust and waterproof packing or preparation | Do not explain the loss solely by inherent nature |
| Temperature casualty | Carrier, reefer operator and warehouse | Temperature, power, machinery and pre-cooling | Preserve raw data |
| Used cargo | Seller, shipper and inspection company | Existing damage, maintenance and operation | Identify new loss first |
| Loss mitigation | Insurer, surveyor and cargo owner | Cooling, drying, isolation and sorting | Mitigate while preserving material evidence |
| Third-party claim | Contracting Carrier, Actual Carrier and warehouse | Casualty stage, responsibility and time limits | Preserve rights without waiting for the insurance decision |
| Legal dispute | Insurer and maritime lawyer | Clause 4.4, causation, concurrent causes and governing law | Preserve expert and factual evidence |
Loss Mitigation and Preservation of Third-Party Rights
A suspected inherent-vice exclusion does not justify leaving the cargo unattended until insurers make a final decision.
Reasonable measures may include preventing further corrosion of wet metal, transferring refrigerated cargo into an appropriate temperature-controlled environment, safely isolating self-heating cargo or separating sound and damaged goods.
At the same time, washing, drying, disposal or processing before causation evidence has been preserved may destroy evidence of salinity, moisture, microbiological activity, chemical change or other material conditions.
Subject to overriding safety and mitigation requirements, photographs, video, raw temperature and humidity data, laboratory samples, cargo samples, packing materials and survey evidence should be preserved where practicable.
The application of Clause 4.4 is also separate from liability of a Contracting Carrier, Actual Carrier, warehouse operator, temperature-control contractor or another third party.
For example, cargo may be inherently sensitive to temperature while a carrier may separately have failed to maintain a contractually required temperature regime. Claim Notice, evidence and limitation periods should therefore be preserved without waiting for the final insurance determination.
When to Involve an Insurer, Insurance Intermediary or Maritime Lawyer
Routine casualty notification, quality documentation and ordinary coverage enquiries should normally be handled first with the insurer or insurance intermediary. Specialist maritime legal or technical advice should be considered where:
- it is disputed whether an external event or inherent characteristics were the material cause;
- the dispute concerns whether Clause 4.2, 4.3, 4.4 or 4.5 applies;
- sea-water entry and the cargo's own tendency to corrode compete as causes;
- refrigeration failure and inherent deterioration of food compete as causes;
- self-heating, fermentation or chemical reaction requires specialist scientific evidence;
- quality valuation of high-value food, pharmaceuticals or chemicals is disputed;
- pre-existing deterioration and new transit damage to used cargo are materially disputed;
- temperature or humidity records conflict with one another;
- the cargo-policy exclusion and liability of a Contracting Carrier or Actual Carrier are disputed simultaneously;
- foreign samples, equipment data or official evidence must be preserved urgently; or
- insurance, third-party notice or litigation time limits are approaching.
Practical Points
The most important point in applying Clause 4.4 is not to determine the exclusion merely from a general proposition such as “metal rusts” or “food deteriorates.”
The question is what loss actually occurred and whether that particular loss was caused by inherent vice or nature of the insured cargo.
Ordinary leakage and ordinary weight loss belong to Clause 4.2, insufficient packing or preparation to Clause 4.3, and delay to Clause 4.5. They should not all be treated as inherent vice.
Where an external event and an inherent characteristic compete, the pre-shipment condition, transit environment, timing of the casualty, development of damage and scientific evidence should be organised chronologically.
For food, frozen or chilled cargo, metal products, timber, agricultural goods, chemicals and used cargo, records of quality, temperature, moisture, production date and pre-shipment condition are particularly valuable before any casualty occurs.
Summary
ICC 1/1/09 Clause 4.4 is an important general exclusion for loss, damage or expense caused by inherent vice or nature of the subject-matter insured.
Decay, rust, mould, deterioration or self-heating does not automatically establish the exclusion. Cargo characteristics, pre-shipment condition, transit environment, external events and causation must be examined.
Clause 4.4 must also be distinguished from Clause 4.2 concerning ordinary leakage, ordinary loss in weight or volume and ordinary wear and tear, Clause 4.3 concerning packing or preparation, and Clause 4.5 concerning delay.
Where an external event activates or accelerates an inherent characteristic, the case should not be reduced to a simple choice between “external casualty therefore covered” and “inherent vice therefore excluded.” The actual causal relationship must be analysed under the applicable wording.
Finally, application of Clause 4.4 under the cargo policy is separate from liability of a Contracting Carrier, Actual Carrier, freight forwarder, warehouse operator or another third party. Insurance notification, loss mitigation, evidence preservation and protection of third-party rights should therefore proceed in parallel.
