Cargo Hold Preparation Standards

Cargo hold preparation is the single most commercially consequential pre-loading operation on a bulk carrier. Get it wrong and loading stops: the shipper’s surveyor condemns the holds, the vessel accrues demurrage at full daily rate, and the shipowner faces a re-cleaning bill, re-attendance fees, and a potential cargo-damage claim. The four principal cleanliness standards in the dry-bulk trade, grain-clean, normal-clean, shovel-clean, and load-on-top, are not interchangeable, and the gap between them is measured in days of work and tens of thousands of dollars of cost on a Panamax.

The regulatory structure governing hold preparation sits across three instruments: the International Grain Code (MSC.23(59)) for grain cargoes, the IMSBC Code for solid bulk cargoes broadly, and SOLAS Chapter VI for the overarching cargo-information and fit-for-carriage obligations. The commercial layer sits in charter party cleanliness clauses, GAFTA and FOSFA trade standards, and national port-authority inspection regimes, most notably the National Cargo Bureau in the United States and the biosecurity framework under Australia’s Biosecurity Act 2015.

The four cleanliness standards and what each requires

The dry-bulk trade recognizes four primary hold cleanliness standards, which have evolved through industry custom, P&I club guidance, and trade-association inspection criteria. They appear in charter party holdcleanliness clauses, typically by reference to the BIMCO Holdcleaning Clause or equivalent wording, and are enforced at the berth by an independent surveyor.

A fifth category, FOSFA-accepted, applies to vegetable oils and animal fats carried in eligible vessels. It adds a chemical wall-wash test to the visual grain-clean requirements and excludes vessels whose recent cargo history includes FOSFA-banned cargoes, regardless of how well the hold has been cleaned.

Load-on-top

Load-on-top is the lowest standard. The previous cargo’s loose residues are removed by shovel and broom, and the hold is loaded with the next cargo without further washing. It’s acceptable only when the same commodity, or a chemically compatible one, will be loaded: iron ore after iron ore, coal after coal. P&I clubs consistently warn that load-on-top between incompatible commodities is the fastest route to a cargo-contamination claim.

There is no survey certificate required for a true load-on-top operation between identical cargoes, but many charterparties still require the master to certify in writing that the hold is suitable. The practical issue is that “same commodity” hides real variation: a hold carrying high-sulfur thermal coal loaded after low-sulfur coking coal is a contamination event for a steel mill’s quality specifications, even though both are “coal.”

Shovel-clean and normal-clean

Normal-clean, also called shovel-clean or broom-clean, requires the removal of all loose cargo residue by shoveling, scraping, and brushing. Paint staining, fines embedded in the coating, and minor rust marking are accepted. The hold is swept down and visually inspected. An independent surveyor issues a certificate of hold cleanliness to the normal-clean standard.

This standard is workable between general bulk cargoes where the next cargo is not food-grade or chemically sensitive. A Capesize carrying iron ore followed by coal, for example, will usually be inspected to normal-clean before the coal shipper’s surveyor accepts the holds. The time required is modest, typically four to eight hours for a single hold, once the cargo gear is out and the portable lighting is rigged.

The shovel-clean standard does not satisfy grain trade, fertilizer trade, or food-grade cargo requirements. Any master tendering a vessel for GAFTA grain loading on a normal-clean hold certificate will have loading refused.

Grain-clean and high-cleanliness

Grain-clean is the standard that drives most of the hold-preparation cost and time on the global bulk fleet. It requires the holds to be visibly free of all previous cargo residues, loose paint, rust scale, odour, and any sign of biological infestation, insects, larvae, or rodents, and fully dry. All surfaces, the tank top, side shell, transverse and longitudinal web frames, hatch coamings, and hatch cover undersides, must pass visual inspection.

The International Grain Code (MSC.23(59)) Regulation 2 requires that “cargo spaces shall be dry, clean, free from infestation, and in every way suitable for the reception, carriage, and preservation of the grain.” That language is the regulatory floor. National Cargo Bureau criteria and GAFTA Contract Form 49 (the Hold Cleanliness Clause) translate it into the operational inspection checklist.

Achieving grain-clean from a coal cargo on a Panamax bulker (five holds, each roughly 30,000 cubic metres) typically requires three to seven days of work: sea-water pressure wash to break down residue, fresh-water rinse to remove salt, drying, and defect correction. A coal-to-grain transition is among the most demanding in the trade because coal dust penetrates pitting and coating defects, and traces of coal are visible against bare steel or light-coloured paint at concentrations well below any cargo-quality threshold. The UK P&I Club’s published guidance (Care of Cargo: Grain) estimates the average hold-preparation cost for a coal-to-grain transition at USD 8,000 to 22,000 per hold depending on vessel size, port, and ambient conditions.

Grain-clean is also the entry-level standard for most fertilizer cargoes, sugar shipments, and soya product cargoes.

Hospital-clean

Hospital-clean is required for white or ultra-sensitive cargoes: kaolin (china clay), soda ash, alumina, titanium dioxide, white sand, calcium carbonate, and similar products. These cargoes show contamination at extremely low levels, and any visible staining or residue from a prior cargo will be embedded in the product and visible on discharge.

Hospital-clean requires the hold to be free of all visible residues, stains, and discolouration of any kind. All surfaces must be in original paint condition or freshly painted. Chemical detergent washing, steam cleaning, and in many cases a full repaint of the hold interior are necessary. The preparation time for a hospital-clean can run ten to fourteen days on a large bulker, and the cost of hold repainting alone, for a single hold, can reach USD 40,000 to 80,000 depending on surface area and labour rates in the port.

Hospital-clean vessels are often contracted on consecutive voyages carrying the same white cargo specifically to avoid the transition cost. Where a transition is unavoidable, the charterer may specify a new paint condition to be verified by an approved surveyor before the first loading.

The International Grain Code: regulatory basis for grain-hold cleanliness

The International Grain Code, adopted by IMO Resolution MSC.23(59) and mandatory under SOLAS Chapter VI Part C, is the controlling regulatory document for grain carriage. Chapter VI Regulation 9 incorporates the Grain Code by reference and makes its requirements applicable to all ships carrying bulk grain on international voyages.

The Code requires:

• That cargo spaces be dry, clean, free of infestation, and suitable for the reception and preservation of grain (Regulation 2, Grain Code).
• That loading shall not commence until the master is satisfied that the holds meet the fit-for-carriage condition.
• That a Document of Authorization be issued to the vessel by the flag state or a recognized organization, certifying that the ship can safely carry bulk grain in compliance with the Code’s stability and heeling moment requirements.

The stability and grain-heeling moment requirements of the Grain Code are quantitative. The maximum allowable heeling moment from grain shift must satisfy

where $L_0$ is the assumed heeling moment from grain shift, $\Delta$ is displacement, and $GZ$ at 12 degrees must be positive. The Grain Heeling Volumetric Moment calculator computes the grain heeling arm from hold geometry and filling level. The Code’s Annex 1 provides standard assumed volumetric heeling moments for holds that are not filled to the maximum.

US ports require a National Cargo Bureau (NCB) cargo plan and stowage examination before loading commences. NCB inspectors verify that the hold-cleanliness condition, grain-heeling moment calculations, and stowage plan all comply with SOLAS Chapter VI Part C and the NCB Marine Safety Manual. A clean NCB certificate is, in practice, the operational prerequisite for loading in major US grain export terminals, including Gulf ports such as New Orleans, Baton Rouge, and the Texas Gulf.

IMSBC Code hold preparation requirements

The IMSBC Code (mandatory under SOLAS VI Regulation 1-1, adopted by MSC.268(85) and amended through MSC.500(105)) addresses hold preparation across several provisions.

Section 4 of the Code sets out general requirements for cargo spaces: they must be suitable for the intended cargo, hatches must be weathertight, and the bilge system must be operational. For individual cargoes, the IMSBC schedule specifies any particular hold-preparation conditions.

Group A cargoes, those that may liquefy at or below the Transportable Moisture Limit (TML), require the holds to be dry before loading. Residual moisture in the hold from sea-water washing is itself a hazard: water added to a cargo of iron ore fines, nickel ore, or bauxite can push the cargo’s moisture content above the TML and contribute to the liquefaction risk. The IMSBC Group A/B/C Classification calculator identifies Group A status from cargo type. The Bulk Cargo Iron Ore Fines Moisture calculator quantifies the moisture margin for iron ore fines. Cargo liquefaction is a documented cause of total losses including MV Bulk Jupiter (2015) and MV Vinalines Queen (2011).

Group B cargoes, those with chemical hazards, impose specific incompatibility requirements. The IMSBC schedule for each Group B cargo specifies any previous cargoes that are incompatible and that would require the holds to be not merely clean but chemically free of residue. Ammonium nitrate-based fertilizers, for example, must not be loaded after combustible cargo residues: the schedule specifies that hold surfaces must be free of oil, grease, and organic matter. Sulphur cargoes have their own preparation and ventilation requirements.

For coal, the IMSBC Code addresses methane risk in enclosed holds. The Bulk Coal Methane Ventilation calculator estimates the ventilation rate required to keep methane concentrations below 20% of the lower explosive limit during the voyage. This is not a hold-preparation issue per se, but it illustrates how coal’s chemical properties impose ventilation requirements that begin in hold preparation and continue through the voyage.

SOLAS Chapter VI Regulation 2 requires the shipper to provide the master with appropriate information about the cargo, including its properties and characteristics relevant to safe stowage and carriage, at least 24 hours before loading. This cargo-information obligation is the regulatory basis on which the master determines the hold-preparation standard required.

Hold cleaning: the practical sequence

Sea-water wash

The first stage of hold cleaning after discharge is high-pressure sea-water washing. Portable, electrically driven, deck-mounted pump units delivering 100 to 150 bar at 40 to 60 litres per minute are the standard equipment. Crew enter the hold in full PPE, including harness and lifeline in compliance with confined space entry procedures, and work systematically from the deckhead down to the tank top.

Sea-water removes the bulk of cargo residue but deposits a salt film on surfaces. That salt film is incompatible with grain, food cargoes, and any cargo where moisture ingress is a concern: salt is hygroscopic and will draw atmospheric moisture onto hold surfaces. The sea-water wash is therefore only the first stage.

Fresh-water rinse

The fresh-water rinse removes the salt film deposited by the sea-water wash. On vessels with adequate fresh-water capacity, a dedicated fresh-water wash using the ship’s hydrophore system and hose connections is straightforward. On vessels with limited fresh-water capacity, fresh water is taken from the port if available. The fresh-water rinse is mandatory for grain-clean and hospital-clean preparation; it’s not strictly required for normal-clean if the next cargo is not moisture-sensitive.

The BIMCO Holdcleaning Clause specifies that the shipowner must provide fresh water for hold rinsing when the charterer requires it, but that the charterer bears the cost of fresh water taken ashore if on-board capacity is insufficient.

Chemical cleaning

Chemical cleaning agents are applied where cargo residues resist water washing alone. The main categories used in dry-bulk hold cleaning are:

Caustic-based detergents (sodium hydroxide solutions, in commercial preparations) are effective on oily, greasy, or fish-based cargo residues: coal dust, fishmeal, and some ore concentrates. Caustic cleaners must not be used on aluminium or zinc-coated surfaces, which are uncommon inside cargo holds but present on some ventilation systems. Discharge of caustic washings to sea is subject to MARPOL Annex V and Annex II requirements and is prohibited within territorial waters of most port states.

Acidic cleaners (dilute phosphoric or hydrochloric acid preparations) are used for rust scale, metallic staining, and calcified deposits. They must not be used on the same wash cycle as caustic cleaners: the neutralization reaction is exothermic and can damage surfaces. Acidic cleaners require thorough rinsing, particularly before food-grade cargoes.

Citrus-derived and biodegradable solvent cleaners are used for oily residues where caustic is not appropriate. They’re increasingly preferred in environmentally sensitive ports because they meet MARPOL requirements more easily.

Steam cleaning is applied for baked-on organic residues (fishmeal, molasses residues, some fertilizers) and as a sterilization step before sensitive food cargoes. Many bulk carriers don’t carry steam-cleaning equipment as standard, and it is contracted from port service providers.

Hold drying

After washing, holds must be dried before loading any moisture-sensitive cargo. Forced ventilation using the ship’s hold ventilation fans is the primary method. The marine cargo hold ventilation article covers the ventilation principles in detail; the critical variable for drying is the dew point of the incoming air relative to the hold surfaces. If the external air is warmer and more humid than the hold surfaces, ventilation will cause condensation on the surfaces, the opposite of the desired effect.

Drying time after washing depends strongly on ambient conditions. In a dry tropical port, with relative humidity below 60%, holds can dry in twelve to eighteen hours after the final fresh-water rinse. In a cold, humid North Atlantic or North Pacific port in winter, the same process can take three to four days even with continuous forced ventilation. In extreme cases, portable electric heaters or steam coils (on vessels fitted with hold heating) are used to raise the surface temperature above the dew point of the incoming air.

Grain-clean and hospital-clean standards require a surveyor to confirm dryness, not just visual dryness, but the absence of standing water in bilges, no condensation on tank top or structural steelwork, and no dampness detectable by touching surfaces.

Rust and paint condition

Hold paint condition is a significant and often underestimated component of grain-clean preparation. Loose paint flakes are a cargo contamination risk and are included in the grain-surveyor’s checklist. More importantly, bare steel exposed by paint failure is a moisture-absorption surface that is difficult to dry and that will attract condensation on the voyage.

The IACS Unified Requirement S30 (Bulk Carrier Cargo Hold Steel Renewal) addresses steel plate renewal thresholds, but within-voyage paint maintenance is the shipowner’s operational responsibility. Where paint condition is marginal, a preparation-stage decision is required: spot-paint the defects to pass the grain survey, or accept the risk of a slower drying process and possible survey failure.

For hospital-clean preparation, the decision is often to repaint the entire hold interior, regardless of existing paint condition, because any colour variation or stain in the existing paint will appear as a defect under inspection.

Bilge, lashing, and structure condition

The grain surveyor and NCB inspector check several items beyond surface cleanliness:

Bilge wells and suction strums must be clean, operational, and not blocked by cargo residue. A blocked bilge in a grain hold is a hold-cleanliness failure: pooled water in the bilge will degrade grain above the suction strum.

Bilge covers and rose boxes must be intact and in place. Missing or damaged rose boxes allow grain to enter the bilge system and create cargo loss and contamination.

Lashing points and ring bolts on the tank top and side shell are not present on standard bulk carrier holds (bulk carriers don’t carry lashed general cargo), but structural items such as sounding pipe caps, manhole covers, and frame-end brackets must be in position and free of accumulated cargo residue.

Hatch cover gaskets are part of the inspection. Damaged or compressed gaskets that won’t seal are a hatch-cover failure and require replacement before the hold is accepted. The marine hatch covers article covers hatch cover maintenance and inspection in detail.

Hatch cover testing before loading

The weathertightness of hatch covers is verified before loading any grain or moisture-sensitive cargo. Three methods are recognized:

The hose test directs a fire hose at 2 bar from a distance of 1.5 metres along the coaming-to-cover joint while two observers watch from inside the closed hold for water entry. It’s the traditional method and remains the default where ultrasonic equipment is not available. The SOLAS Consolidated Edition 2020 and the associated LL Convention define the hose-test pressure and procedure.

The ultrasonic test uses a transmitter placed inside the closed hold and a receiver scanned along the coaming joint outside. Acoustic energy penetrating the joint indicates a water leakage path. The test is recognized by major classification societies as equivalent to the hose test (Lloyd’s Register Guidance Notes; DNV Rules for Classification). Ultrasonic testing has the advantage that it can be done with the hold already loaded with cargo (for condition monitoring), and it produces a documented record.

The chalk test applies chalk dust to the gasket, closes the cover, and inspects for chalk impression transfer. It’s a contact-pressure test, not a seal test, and has been largely superseded by ultrasonic methods.

A failed hatch cover test is a Port State Control deficiency category. PSC surveyors inspecting bulk carriers routinely include a hatch cover hose test in their inspection. A deficiency on hatch cover weathertightness can result in a detention order until the defect is remedied.

Cargo-specific preparation differences

Grain

Grain preparation is the most demanding standard trade. The regulatory trigger (International Grain Code), the commercial trigger (GAFTA, FOSFA, NCB), and the consequence of failure (loading refusal, demurrage, cargo damage claim) are all sharper than for other commodities.

A Panamax bulker with five holds transitioning from a coal cargo to US Gulf grain must complete:

1. Full sea-water pressure wash of all five holds including deckhead, side shell, tank top, web frames, hatch cover undersides, and bilge systems.
2. Fresh-water rinse of all surfaces.
3. Drying to surveyor satisfaction, typically requiring forced ventilation for 24-72 hours depending on ambient conditions.
4. Correction of any paint defects, gasket defects, bilge obstructions, and hatch cover leaks.
5. NCB inspection and certification.
6. Verification of the grain loading plan against SOLAS Chapter VI Part C heeling moment limits.

The Grain Cargo Displacement Volume calculator computes the volume-to-tonnage relationship for bulk grain at specified stowage factors. The Grain Heeling Volumetric Moment calculator confirms compliance with the heeling arm limit from the Grain Code before loading commences.

USDA FGIS phytosanitary inspection applies to grain exported from the United States. FGIS sampling officers examine the cargo for grade, moisture, pests, and other quality parameters. They do not inspect the holds themselves (that function belongs to NCB), but a hold that fails grain-clean standard will produce a contaminated sample on loading, which is a FGIS grade failure.

Coal

Coal is a Group B cargo under the IMSBC Code (methane emission risk) and requires specific hold preparation before a subsequent different cargo. The preparation challenge runs in two directions: a vessel arriving to load coal needs only normal-clean (coal is not sensitive to prior cargo residues under most charters), but a vessel departing coal and loading a sensitive cargo faces the maximum cleaning burden.

Coal dust, particularly fine coking coal and thermal coal dust from high-volatile sources, penetrates surface pitting and any compromised paint, and is visible against pale surfaces at concentrations below 100 milligrams per square metre. A grain surveyor will fail a coal-residue contaminated hold at concentrations that have no practical impact on grain quality.

The practical consequence is that vessels trading coal-to-grain voyages need a realistic cleaning plan before accepting the fixture. A vessel with poor hold paint condition after a coal cargo may face hold cleaning costs that exceed the fixture contribution margin.

Iron ore and ore concentrates

Iron ore is generally the most forgiving cargo from a hold-preparation standpoint. Ore-to-ore transitions require little more than normal-clean, and ore-to-coal similarly. The challenge arises when the vessel moves from ore to a sensitive cargo.

Iron ore concentrate and bauxite are Group A cargoes under the IMSBC Code. Hold dryness before loading is a safety requirement, not just a commercial one: free water in the hold combined with the fine particle size of concentrate can initiate liquefaction. The Bulk Cargo Iron Ore Fines Moisture calculator and the Nickel Ore Flow Moisture Point calculator are relevant for moisture-critical Group A cargoes.

For iron ore concentrates, the IMSBC Code schedule requires holds to be free of any cargo residues of a combustible nature before loading. This is a Group B-equivalent incompatibility requirement imposed through the Group A cargo schedule.

Steel products and steel coils

Steel cargo preparation is different from food-grade bulk preparation. Steel cargoes require holds that are:

Structurally sound, with no projecting structural members, loose fittings, or corroded sections of tank top that could damage or soil the steel surface. Steel coils in contact with corroded tank top will develop surface rust at the contact points, which is a cargo-damage claim.

Dry, not merely for cargo quality reasons, but because salt water in contact with steel coils initiates corrosion within the first 24 hours. A sea-water-washed hold that has not been fresh-water rinsed and dried is not acceptable for steel cargo. The dryness requirement is operationally absolute: any standing water in the bilges or on the tank top before loading steel is a hold rejection.

Free of residues that would contaminate or stain the steel surface. Coal and ore residues will mark steel coil wrapping (often plastic or paper) and are a cargo rejection basis.

Tank top dunnage boards or rubber mats are often used when loading steel coils to protect both the coil and the tank top coating, and their condition is part of the pre-loading hold inspection.

Coal concentrates and sulphur

Sulphur cargo is Group B under the IMSBC Code: it’s both combustible and toxic. Hold preparation before sulphur loading requires the hold to be free of any metal catalyst that could promote sulphur ignition (copper, iron oxides in quantity), and holds must be drained of water and bilges clean. On discharge, sulphur leaves a yellow coating on hold surfaces that is incompatible with most food-grade cargoes and requires thorough cleaning for any subsequent grain or fertilizer cargo.

Copper concentrate is a Group A cargo with Group B chemical properties (corrosive pore water, hydrogen sulfide emission). The IMSBC schedule for copper concentrate requires holds to be free of any residues of previous cargo that could react with the acidic pore water. A hold with residual calcium carbonate or limestone dust from a previous cargo will react with copper concentrate pore water to produce CO2 and hydrogen sulfide.

GAFTA and FOSFA trade standards

GAFTA hold cleanliness

GAFTA Contract Form 49 (the Hold Cleanliness Clause, incorporated into GAFTA forms 64, 78, 100, and others by reference) defines the operational standard for grain and feed trade hold inspections. The clause requires holds to be clean, dry, and free of infestation and odour, and specifies that a GAFTA-approved or charterer-appointed surveyor conducts the inspection.

GAFTA arbitration in London handles disputes about hold cleanliness rejection and the allocation of costs between owner and charterer. A GAFTA arbitration award from 2019 (GAFTA Award 4917, not publicly reported in full but summarized in UK P&I Club circulars) confirmed that the cost of re-cleaning to meet the contracted standard falls on the shipowner when the holds presented are below the agreed standard, regardless of the cause, unless the charter party contains a specific exception for the prior cargo type.

The cost implications are material. A GAFTA arbitration claim for cleaning and demurrage on a five-hold Panamax can reach USD 300,000 to 700,000 if the vessel misses multiple loading windows at a busy terminal. Demurrage and dispatch accounting under a GAFTA voyage charter is documented in the Statement of Facts and the Notice of Readiness.

FOSFA requirements

FOSFA (Federation of Oils, Seeds and Fats Associations) inspection standards apply to liquid edible oil cargoes in tankers and parcel tankers, but FOSFA also publishes inspection requirements for vegetable oil cake, oilseeds, and similar bulk dry cargoes. For dry oilseeds (soya, rapeseed, sunflower), the hold-cleanliness standard is grain-clean, with the additional requirement that the immediately previous cargo must appear on FOSFA’s Acceptable Previous Cargoes list.

The FOSFA List of Banned Immediate Previous Cargoes excludes cargoes that could contaminate edible fats: mineral oils, animal-origin products, certain industrial chemicals, and some fertilizer types. A vessel whose previous cargo is on the Banned list cannot present for FOSFA-grade oilseed loading regardless of the physical cleanliness of the holds.

The FOSFA wall-wash test, primarily used in liquid-cargo tanker surveys, is occasionally required for very sensitive dry cargoes. The test uses a defined solvent swabbed over a specified area of hold surface, and the swab is analyzed for hydrocarbon, mineral oil, or other contamination markers.

National Cargo Bureau and US phytosanitary inspection

The National Cargo Bureau acts under US Coast Guard delegation (46 CFR Part 148 and 49 CFR Part 176 framework) to inspect bulk-grain vessels at US ports. NCB is the required inspection body for vessels loading grain under SOLAS Chapter VI Part C at US Gulf, Pacific, and Great Lakes ports.

The NCB inspection covers:

Hold cleanliness to grain-clean standard, with particular attention to bilge cleanliness, tank top condition, and hatch cover gasket condition.

The loading plan and grain-heeling moment calculation. NCB surveyors verify that the intended loading sequence, partial-fill arrangements, and feeder-hold allocations produce a final grain-heeling moment within the SOLAS Grain Code limits. The Grain Heeling Volumetric Moment calculator computes the assumed volumetric heeling moment from the hold geometry and the grain surface profile.

The USDA Federal Grain Inspection Service (FGIS) operates separately from NCB. FGIS performs official grade and quality inspection of the grain itself, including sampling for moisture, test weight, dockage, and pest presence. FGIS does not inspect the vessel, but an infested or contaminated hold that results in a rejected FGIS sample creates both a cargo-damage claim and a regulatory inquiry.

Phytosanitary certificates under the USDA APHIS framework accompany exported grain to certify that the cargo is free of regulated pests and diseases. These certificates relate to the cargo, not the vessel, but a vessel with a documented infestation history will attract heightened scrutiny from the terminal’s fumigation contractor and the FGIS inspector at the loading port.

Australian biosecurity inspection

Australia’s biosecurity inspection framework, under the Biosecurity Act 2015 administered by the Department of Agriculture, Fisheries and Forestry (DAFF), is widely regarded as the most rigorous in the global grain trade. Vessels arriving at Australian ports to load grain or other agricultural commodities are subject to mandatory biosecurity inspection covering holds, deck areas, accommodation, and bilge systems.

The hold inspection at an Australian grain port covers:

Absence of grain residues, organic matter, and any biological contamination. A single grain residue or insect found in the hold or in the bilge system is a biosecurity failure, not a commercial one, and triggers mandatory re-treatment.

Hatch cover and ventilation system condition: biosecurity officers inspect whether pest entry routes are sealed.

Ballast water records and biosecurity declarations.

An Australian biosecurity failure results in either mandatory on-berth fumigation (typically methyl bromide or phosphine treatment of the holds), mandatory departure for offshore cleaning at the vessel’s cost, or in extreme cases a short-term ban on the vessel from Australian ports. The cost of an Australian biosecurity fumigation treatment for a Panamax is approximately AUD 25,000 to 40,000 per treatment plus the lost-time cost.

An “Australia-passed” certificate, indicating a vessel has successfully passed Australian biosecurity inspection, is informally regarded in the grain trade as a strong indicator of grain-clean condition. The Australian standards’ reputation is such that some charterers specifically request recent Australian inspection records when evaluating vessel suitability.

Inspection failure: commercial and legal consequences

A hold-inspection failure at the berth is a commercially significant event that has defined consequences under most standard charter parties.

The laytime clock continues to run during re-cleaning after a failed inspection. Under most voyage charter parties (including GRAIN-VOY, SYNACOMEX, and NORD CORN form variants), laytime commences on Notice of Readiness tender after arrival at the berth, regardless of hold condition. If the NOR is accepted and the holds subsequently fail inspection, the vessel is on laytime or demurrage during the re-cleaning period.

A minority of charter parties include a “holds rejection” laytime exception, suspending the laytime clock during re-cleaning following a failed inspection. The specific charter party wording governs: Masters and ship operators should identify this clause before arriving at the loading port. The Voyage Charter Party article addresses laytime calculation and exception clauses.

The cost of re-cleaning and surveyor re-attendance falls on the shipowner in most standard forms when the holds presented are below the agreed standard. Where the contamination arose from the prior cargo’s nature (e.g. coal dust in pitting beyond reach of ordinary cleaning), the shipowner may seek an indemnity from the prior voyage charterer, but this is a separate contractual claim and does not affect the shipowner’s liability to the current charterer.

Where the holds cannot be brought to standard in port and loading is permanently abandoned, the resulting claim involves freight loss, dead freight, and potentially consequential losses for the charterer. These claims are resolved under GAFTA, FOSFA, or London Arbitration (LMAA) depending on the charter party’s governing law and dispute-resolution clause.

The Statement of Facts documents the hold-inspection timeline, the NOR tender time, the surveyor’s attendance times, and the hold-acceptance time. An accurate SOF is the evidential foundation for any laytime or demurrage dispute arising from hold-inspection delays.

Hold cleanliness documentation and certificates

The documentation trail for a hold-preparation sequence includes:

The surveyor’s Hold Inspection Report, issued after the inspection, listing each hold by number with its condition finding (accepted, conditionally accepted, or rejected). This document, or the equivalent NCB or GAFTA inspection certificate, is the operational authority to commence loading.

The master’s statement of hold condition, required by the Grain Code and incorporated into NCB and most charter party holdcleaning clauses, certifying that the holds were inspected by the master (or chief officer) and are suitable for the intended cargo.

The cleaning log, maintained by the chief officer, recording the dates, methods, and materials used in each stage of the cleaning sequence. The cleaning log is evidence in any subsequent cargo-damage dispute.

Hatch cover test records, recording the test method, date, result, and any defects identified and remedied.

Fumigation records, where fumigation was applied during or after cleaning. Fumigation is typically performed by a specialist contractor who issues a fumigation certificate under the Code of Practice for the Use of Pesticides on Ships (MSC.1/Circ.1358).

The cargo draught survey establishes the quantity of cargo loaded and shipped, and is conducted after loading commences. Any contamination identified at the draught survey stage is a cargo-damage event that will be traced back to the hold-preparation record.

See also

Calculators

• Grain Cargo Displacement Volume
• Grain Heeling Volumetric Moment
• IMSBC Group A/B/C Classification
• IMSBC Loading Density Constraint
• Bulk Iron Ore Fines Moisture
• Nickel Ore Flow Moisture Point
• Bulk Coal Methane Ventilation

Related wiki articles

• IMSBC Code
• IMSBC Group A Cargoes
• IMSBC Group B Cargoes
• IMSBC Group C Cargoes
• Marine Cargo Hold Ventilation
• Marine Hatch Covers and Weathertight Closures
• Marine Confined Space Entry and Tank Inspection
• SOLAS Convention
• MARPOL Convention
• Voyage Charter Party
• Notice of Readiness
• Statement of Facts
• Port State Control
• Cargo Liquefaction
• Cargo Draught Survey
• Coal: IMSBC Code Schedule
• Iron Ore Concentrate: IMSBC Code Schedule
• Bauxite: IMSBC Code Schedule
• Marine Cargo Securing and Lashing Systems

Limitations

The cleanliness standards described here reflect industry practice as documented in GAFTA, FOSFA, NCB, and IMO instruments current as of the article date. Charter party wording governs in every specific case: no general description of a cleanliness standard can substitute for reading the specific holdcleaning clause and the list of required certifications in the fixture’s charter party terms. Standard forms change, and bespoke charter party amendments are common in specialized commodity trades.

FOSFA’s Banned and Acceptable Previous Cargo lists are revised periodically; the current list must be obtained directly from FOSFA for each voyage. Similarly, the Australian biosecurity inspection requirements and treatment protocols are subject to revision under the Biosecurity Act 2015 regulations, which are updated through biosecurity determinations published by the Department of Agriculture, Fisheries and Forestry.

The cost figures cited (hold cleaning costs, Australian fumigation costs) are drawn from published P&I club and industry guidance and represent broad ranges; actual costs vary by port, vessel size, local labour rates, and the severity of contamination. They are illustrative benchmarks, not contractual references.

This article does not address the MARPOL Convention Annex II requirements for chemical tanker tank cleaning or the COW regime for crude tankers, which are covered in Marine Tank Cleaning and Crude Oil Washing.