Metcoke: “Dirty Cargo” or a Contractual Grey Area?

 

Metcoke: “Dirty Cargo” or a Contractual Grey Area?

Why Owners, Charterers and Operators should stop using the phrase “dirty cargo” without first reading the charter party

⚓ SHIPOPSINSIGHTS EXECUTIVE EDITORIAL

 

A charterer sends a cargo nomination:

“Metallurgical Coke — 50,000 MT.”

The commercial desk sees it as another routine dry-bulk cargo.

The Master sees something different: a carbonaceous cargo that can leave residues and may require proper post-discharge cleaning.

The operator sees a third issue:

What will the next cargo be, and who pays for getting the holds ready for it?

And the chartering manager may ask the most important question of all:

“Does the NYPE actually classify metcoke as a dirty cargo?”

That question deserves a careful answer.

The short answer is:

Metcoke is commonly treated operationally as a dirty cargo because of its hold-residue and cleaning characteristics. But NYPE does not contain a universal rule that simply says “metcoke = dirty cargo.” The contractual consequences depend on the actual wording of the NYPE and its rider clauses.

That distinction can be commercially significant.

1. The First Mistake: Confusing Cargo Characteristics with Contractual Classification

There are actually three different questions being mixed together in many chartering discussions:

1. What is the cargo?

Metcoke, or metallurgical coke, is produced from coal through a carbonisation process and is principally used in steelmaking.

2. What is its IMSBC classification?

Met Coke is generally carried under the proper bulk cargo shipping name “Coke” and is classified as Group C under the IMSBC framework, meaning it is not classified as a cargo presenting the Group A liquefaction hazard or Group B chemical hazard. (Safety4Sea)

3. Is it a “dirty cargo” under the charter party?

That is a contractual question, not an IMSBC question.

And this is where operators need discipline.

Group C does not mean “clean cargo.”

Likewise, “dirty cargo” is not an IMSBC hazard classification.

The two concepts should never be used interchangeably.

 

2. Operationally, Metcoke Can Be a Dirty Cargo

From the shipboard perspective, the issue is much more straightforward.

Metcoke can leave carbonaceous residues in the cargo spaces. Practical cargo-hold cleaning guidance for metcoke calls for removal of solid residues and sweeping, with freshwater/chemical cleaning potentially required depending on the condition of the holds after discharge. (Safety4Sea)

This matters particularly when the vessel is moving from:

Metcoke → Grain

or another cargo requiring a substantially higher cleanliness standard.

The Master and Chief Officer therefore should not look at metcoke simply as:

“Group C — no special hazard.”

That answers one question.

It does not answer:

“What condition will the holds be in after discharge?”

This is where operational experience matters.

The practical distinction is:

Safety classification ≠ hold-cleanliness classification

A cargo can be relatively straightforward from an IMSBC hazard perspective while still creating a significant cleaning requirement.

 

3. NYPE 2015 Does Not Automatically Say “Metcoke = Dirty”

This is the contractual heart of the issue.

BIMCO – NYPE 2015 describes NYPE 2015 as the widely used standard time charter party for the dry-cargo sector. The standard form addresses cargo employment, vessel readiness and cargo-related obligations, but the commercial consequences of a particular cargo often depend on the specific wording incorporated into the charter and its riders. (BIMCO)

For example, NYPE 2015's delivery provisions require the vessel's holds to be clean and ready to receive the intended cargo, or, if no intended cargo is specified, any permissible cargo. (assagenti.it)

But that does not create a universal contractual table saying:

Coal = dirty
Petcoke = dirty
Metcoke = dirty

Therefore, if a fixture discussion simply says:

“Dirty cargoes permitted”

the next question should be:

“What does this charter party mean by dirty cargo?”

That is where the rider becomes critical.

 

4. The Rider Clause Can Change the Commercial Answer

This is where a good operator earns his money.

Suppose the rider says:

“Charterers shall not order the vessel to carry dirty cargoes.”

Now Charterers nominate metcoke.

The immediate reaction should not be:

“Metcoke is dirty, so reject it.”

Nor should it be:

“Metcoke is Group C, so it is clean.”

Both responses are too simplistic.

The operator should examine:

• The exact cargo exclusion wording
• Any definition of dirty cargo
• Permitted cargo list
• Excluded cargo list
• Hold-cleaning clause
• Redelivery condition
• Next employment requirements
• Any special cargo clause
• Any rider dealing with coal/coke/petcoke
• Any requirement concerning grain cleanliness

The commercial principle is simple:

The cargo's physical characteristics tell you what may happen operationally. The charter party tells you who bears the contractual consequences.

 

5. A Better Way to Think About Metcoke

Instead of asking only:

“Is metcoke dirty?”

ask five questions.

Question 1 — Is it permitted?

Does the charter allow metcoke?

Question 2 — What condition must the holds be in?

Is the vessel required to be clean-swept, washed, grain-clean, or at another specified standard?

Question 3 — What cleaning will actually be required?

Sweeping?

Washing?

Chemicals?

Freshwater rinsing?

Manual removal of stubborn deposits?

Question 4 — Who pays?

Owners?

Charterers?

Shared?

Specific lump sum?

Question 5 — Who bears the time consequence?

Is the cleaning performed during the charterers' employment?

Is the vessel on hire?

Does a specific clause allocate the time?

This is where the real money is.

 

6. Hold Cleaning Is Not Just a Technical Issue — It Is a Commercial Issue

Consider this voyage sequence:

Load Metcoke

↓

Discharge Metcoke

↓

Hold cleaning

↓

Position for next cargo

↓

Next cargo: Grain

Now imagine the vessel reaches the next loading port and fails the hold inspection.

The problem is no longer simply:

“The holds are dirty.”

It can become:

• Delayed loading
• Additional cleaning
• Surveyor attendance
• Port costs
• Potential off-hire exposure
• Lost next employment
• Laytime complications
• Commercial disputes
• Potential cargo contamination claims

This is why BIMCO has developed specific hold-cleaning and residue-disposal clauses.

BIMCO Hold Cleaning/Residue Disposal Clause for Time Charter Parties expressly addresses charterers' requests for crew to clean holds and provides for charterers' responsibility for cleaning costs and time under that clause. It also addresses cargo-related residues and disposal. (BIMCO)

That is a powerful reminder:

Cleaning should not be treated as an afterthought. It should be treated as part of the employment economics.

 

7. The Master Sees Residue. The Operator Sees the Next Voyage.

This is one of the most important differences between shipboard and shore-based thinking.

The Master may report:

“Metcoke discharged. Holds require cleaning.”

The operator should immediately ask:

“What is the next cargo?”

Because the required cleaning standard depends heavily on what comes next.

Metcoke → Iron Ore

The practical cleaning requirement may be very different from:

Metcoke → Grain

And:

Metcoke → Fertilizer

may create another set of considerations.

Therefore, the cargo should never be assessed in isolation.

The correct operational question is:

“What is the cargo-to-cargo transition?”

That is where hold preparation becomes commercially important.

 

8. The Chartering Desk Should Think Beyond “Cargo Allowed”

At the time of fixing, charterers and owners often focus on:

Cargo quantity + load port + discharge port + freight/hire.

But experienced operators look one step further.

Before agreeing to a cargo, ask:

Cargo Risk Checklist

Cargo

• Exact commodity name?
• Metcoke or petcoke?
• Proper Bulk Cargo Shipping Name?
• Cargo declaration available?

IMSBC

• Correct IMSBC schedule?
• Group classification?
• Any cargo-specific precautions?

Operations

• Dust/residue characteristics?
• Hold preparation?
• Cleaning requirement?

Commercial

• Who pays cleaning?
• Who bears cleaning time?
• What happens if the next hold inspection fails?

Employment

• What is the next cargo?
• What cleanliness standard will be required?

Contract

• Is the cargo expressly permitted?
• Is it expressly excluded?
• Does a rider define “dirty cargo”?

This is where a routine nomination becomes a professional risk assessment.

 

9. Don't Confuse Metcoke With Petcoke

This is another area where terminology can create mistakes.

Metallurgical Coke

Produced from coal through carbonisation.

Under the IMSBC framework, Coke is classified as Group C. (Safety4Sea)

Petroleum Coke

A refinery-derived product and a different cargo with different regulatory characteristics. Petroleum coke is treated separately under the IMSBC framework and can fall within Group B requirements depending on the cargo condition/type. (ClassNK)

Therefore:

Metcoke ≠ Petcoke

The distinction matters for:

• Cargo declaration
• IMSBC compliance
• Safety precautions
• Charter party description
• Operational planning
• Hold cleaning
• Claims prevention

A chartering recap that simply says “coke” may therefore be insufficiently precise.

 

10. The Leadership Lesson: Don't Let Labels Replace Thinking

There is a broader lesson here for maritime management.

Experienced professionals sometimes use shorthand:

“That's dirty cargo.”

“That's a clean cargo.”

“That's a standard coal trade.”

“That's just normal hold cleaning.”

The danger begins when shorthand replaces analysis.

A strong operator asks:

“What exactly do we mean?”

That single question can prevent a surprisingly large number of disputes.

The same principle applies to:

• “Off-hire”
• “Weather”
• “Safe port”
• “Cargo damage”
• “Hold cleanliness”
• “Deviation”
• “Breach”
• “Normal wear and tear”

Maritime disputes often begin because two parties use the same word but attach different meanings to it.

11. Practical Framework for Owners

Before accepting a metcoke stem under NYPE, the Owners' desk should complete this sequence:

1. CHECK THE CARGO DESCRIPTION

Confirm that the proposed cargo is genuinely metallurgical coke, not petroleum coke or another coke-related product.

2. CHECK THE IMSBC POSITION

Ensure the correct Bulk Cargo Shipping Name and cargo information are provided.

3. CHECK THE NYPE

Read the cargo exclusion and permissible cargo provisions.

4. CHECK THE RIDER

Look specifically for:

“dirty cargo”

“coal/coke/petcoke”

“carbonaceous cargo”

“hold cleaning”

“residue disposal”

5. CHECK THE NEXT CARGO

This determines the practical significance of the cleaning.

6. CHECK TIME AND COST

Do not discuss cleaning only in dollars.

Calculate:

Cleaning cost + port cost + chemicals + freshwater + survey + time + potential off-hire exposure

7. PUT THE AGREEMENT IN WRITING

If there is any uncertainty, clarify it before loading, not after discharge.

 

12. Practical Framework for Masters and Chief Officers

When receiving metcoke orders:

Master

Confirm:

• Cargo description
• IMSBC information
• Loading instructions
• Charter-party limitations
• Next employment where known

Chief Officer

Plan:

• Hold preparation
• Bilge protection
• Dust management
• Discharge monitoring
• Residue removal
• Post-discharge cleaning

Before sailing from discharge port

Document:

• Condition of each hold
• Residual cargo
• Cleaning performed
• Chemicals used
• Freshwater washing
• Photographs
• Any areas requiring additional attention

Good documentation is not bureaucracy.

It is claims prevention.

 

13. Practical Framework for Chartering & Operations Teams

When the fixture desk receives:

“Metcoke cargo available.”

Don't stop at:

“Cargo permitted?”

Ask:

“Permitted under what wording, and with what consequences?”

Then circulate a short internal note:

Cargo: Metallurgical Coke
IMSBC BCSN: Coke
IMSBC Group: C
Operational characteristic: Carbonaceous residue / cleaning consideration
NYPE status: Subject to exact cargo/rider wording
Cleaning: To be assessed based on next cargo and CP clause
Cost/time allocation: Confirm from CP/riders
Next cargo: ______
Special concern: ______

That five-minute discipline can prevent a much larger dispute later.

 

⚓ EXECUTIVE INSIGHT

The most important lesson is not whether someone calls metcoke “dirty” or “clean.”

The more professional question is:

“Dirty under which standard?”

IMSBC classification?

Operational hold-cleaning practice?

Charter-party wording?

Terminal acceptance standard?

Next-cargo cleanliness requirement?

These are different questions.

And they can produce different answers.

Metcoke may be Group C under IMSBC while still requiring meaningful hold cleaning after discharge. (Safety4Sea)

Similarly, a cargo may be operationally “dirty” without automatically becoming a prohibited cargo under a particular NYPE unless the charter party or rider says so.

That is why experienced maritime professionals should resist easy labels.

The cargo tells you what may happen.

The charter tells you who pays.

The next cargo tells you how important the cleaning is.

And the documentation tells you what happened.

That is the difference between moving cargo and managing a voyage.

 

⚓ ShipOpsInsights Practical Rule

Never classify metcoke as “dirty” merely because someone says so.

Identify the cargo correctly. Check the IMSBC requirements. Read the NYPE and riders. Determine the actual cleaning requirement. Identify the next cargo. Then allocate cost, time and risk expressly.

That is not merely good chartering practice.

It is claims prevention by design.

Sources

BIMCO — NYPE 2015 — standard NYPE 2015 reference. (BIMCO)

BIMCO — Hold Cleaning/Residue Disposal Clause for Time Charter Parties — cleaning, residue and time/cost allocation. (BIMCO)

Met Coke — BIMCO/Safety4Sea guidance — metcoke as “Coke” under IMSBC and practical hold-cleaning guidance. (Safety4Sea)