Key takeaways
- Distinguish a fixed despatch rate from a rate defined by reference to another term.
- Review the amendment's actual scope and negotiation history.
- Do not assume that changing demurrage automatically answers the despatch question.
- Calculate competing interpretations using the same supported time-saved input.
- Resolve the commercial wording rather than negotiating from unexplained totals.
Identify the rate mechanism in the actual bargain
BIMCO's published RUSWOOD form contains a form-specific relationship between despatch and demurrage rates. That does not establish the arrangement in another charter. Check the current text, recap and amendments to identify whether the rate is fixed, linked or otherwise qualified.
A fixed amount and a reference-based rate may produce the same result at the time of fixing. They can diverge when another term changes. The reviewer should therefore preserve how the rate was expressed, not merely the number entered into the original spreadsheet.
If an internal summary expanded a reference into a fixed figure for convenience, identify that transformation. The calculated figure may have been a working value rather than a separately negotiated term. Conversely, an expressly agreed fixed amount should not be treated as a floating reference merely because it originally matched a familiar ratio.
The dispute requires the actual agreement and context. The account preparer should not decide it by selecting whichever historical field is easiest to retrieve.
Read the amendment for what it changes
A later rate discussion may focus on demurrage alone, or it may address the broader delay and early-completion bargain. The review should identify the stated scope, the parties' communications and any qualifications.
Do not infer agreement from an internal calculation prepared during negotiation. A broker or operator may model the effect of a revised rate without authority to accept it. The adviser needs the communications that establish the parties' actual positions.
Also compare the recap and clean charter. A revised demurrage figure may appear in one document while an earlier despatch figure remains in another. The inconsistency should be raised for review rather than silently resolved in the account.
Where the amendment is ambiguous, state the precise question: does the despatch term retain a fixed amount, or does its reference continue to operate on the amended rate? That is more useful than describing the parties as merely disagreeing about the total due.
Keep the time-saved input constant for comparison
A rate dispute should be isolated from a separate dispute about time saved. Use the same expressly stated time input when comparing rate interpretations, unless the example is intended to analyse both issues.
Otherwise, the numerical difference becomes difficult to explain. One party may use a different rate and a different completion endpoint, while the other believes the disagreement concerns only the amendment. A comparison should identify the contribution of each changed premise.
Confirm the unit and currency as well. A daily rate requires a stated method for applying part of a day. Do not compare a rate in one currency with a total in another without an expressly supported conversion basis. The worked example below uses one currency and a simple agreed pro rata assumption to keep the rate question visible.
Worked fictional amendment dispute
This ILLUSTRATIVE example assumes an original demurrage rate of USD 18,000 per day and an original despatch rate calculated at half that figure, or USD 9,000 per day. Demurrage is later amended to USD 24,000 per day. The parties dispute whether despatch remains fixed at USD 9,000 or continues at half the amended rate, USD 12,000.
Assume 16 hours of payable time saved solely for comparison, with a 24-hour pro rata daily-rate method.
| Interpretation | Despatch rate | Calculation | Amount |
|---|---|---|---|
| Original despatch amount remains fixed | USD 9,000 per day | 16 ÷ 24 × USD 9,000 | USD 6,000 |
| Link follows amended demurrage rate | USD 12,000 per day | 16 ÷ 24 × USD 12,000 | USD 8,000 |
| Difference | USD 3,000 per day | USD 8,000 − USD 6,000 | USD 2,000 |
The comparison shows the effect of the disputed rate mechanism. It does not decide which interpretation is correct or whether the assumed time is payable under an actual charter. No taxes, interest or other charges are included.
The principal now has a defined commercial issue to assess with advice. The arithmetic makes the difference transparent without substituting for interpretation of the negotiated terms.
Build a focused dispute record
| Record | Question it helps answer | Caution |
|---|---|---|
| Original recap | How was the despatch rate expressed? | A summary may omit a qualification |
| Original calculation | What value was used at fixing? | A working value is not necessarily an agreed fixed rate |
| Amendment exchange | What change did the parties discuss and accept? | Preserve complete context |
| Clean charter or addendum | How was the decision recorded? | Check for inconsistent retained figures |
| Account instructions | What method did the preparer apply? | Internal instructions do not settle external agreement |
| Counterparty response | What interpretation is actually disputed? | Avoid assuming a broader objection |
The record should let an adviser distinguish the legal question from administrative inconsistencies. If the documents are clear but the spreadsheet uses an old input, the issue may be an implementation error. If the documents support competing positions, the principal needs advice and a commercial decision.
A focused record also helps avoid unnecessary argument about custom. General familiarity with a rate relationship does not replace the actual terms. Use the source agreement and obtain advice on any properly relevant contextual issue.
Resolve the rate and update every dependent account
Once the position is agreed or an authorised interpretation is adopted, update the calculation and explain the basis. Preserve any continuing dispute rather than describing the result as mutually accepted when it is not.
Check related summaries, forecasts and payment requests. A resolved rate issue can remain embedded in an older commercial estimate and mislead the person approving the final account. Identify which files rely on the superseded input.
If the parties compromise on a payment amount without agreeing the rate interpretation, record that distinction with appropriate review. The settlement should not automatically become a precedent for another fixture or an assertion that the original wording had a settled meaning.
The useful outcome is a clear statement of the adopted rate mechanism, its authority and its application to supported time saved. A single total without that explanation leaves the same dispute ready to recur.
Common mistakes
The main error is treating a calculated reference value as though it were necessarily a separately agreed fixed rate. The opposite error is assuming that every rate described informally as half must follow every later demurrage amendment.
Do not mix a rate dispute with an unlabelled change to time saved. Avoid resolving inconsistent documents through an unexplained spreadsheet choice. Finally, distinguish an agreed interpretation from a commercial compromise so the account's basis remains accurate.
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Educational information only; not legal, financial or trading advice. Contract wording and applicable rules control. Verify current requirements and obtain qualified advice before acting.
Frequently asked questions
Does a demurrage amendment automatically change despatch?
Do not assume that. Review how despatch is expressed and what the amendment actually changes. The fixed-versus-linked question requires the agreement, context and appropriate advice.
Is the original spreadsheet rate evidence of a fixed agreement?
It may show the value used at that stage, but its contractual significance needs review. The figure may simply implement a reference-based term rather than establish an independently negotiated amount.
How should competing rates be compared?
Use the same supported time-saved input, unit and currency, and label each interpretation. This isolates the commercial effect of the rate question without concealing other changed assumptions.
Can a settlement resolve the amount without resolving the interpretation?
The parties can consider that approach with appropriate terms and advice. Record the settlement's actual scope so the agreed payment is not misrepresented as a wider conclusion about the original wording.