Key takeaways
- Establish the status of the proposed treatment before checking its arithmetic.
- Reconcile the reviewed period with the rate and account coverage.
- Identify credits or adjustments already applied to the same event.
- Review related expenses separately rather than folding them into hire automatically.
- Send finance a precise implementation instruction and reconcile the result.
Separate entitlement from calculation
Steamship Mutual's off-hire guidance addresses contractual restrictions on deductions and the distinction between anticipated and accrued off-hire. Check the current text and obtain advice before withholding hire or implementing a disputed adjustment.
For the commercial review, establish what the proposed figure represents. It might be an internal estimate, a counterparty claim, a reviewed position or an agreed account correction. Each can contain identical arithmetic while carrying a different decision status.
The account preparer should not be asked to resolve that status through calculation. Give the preparer the approved assumptions and identify any uncertainty that remains. If the entitlement question is unresolved, an illustrative calculation can support discussion without becoming a payment instruction.
This separation also improves escalation. A disagreement about whether an event qualifies requires a different review from a mismatch between the approved period and the amount entered in the ledger.
Check the time basis before applying the rate
The calculation should use the period or time measure that has actually been reviewed. Do not replace it with the full incident duration, the repair invoice period or a rounded duration from an email summary. Trace the input to the authorised assessment.
Confirm the units. A rate expressed for a day requires an explicit method for converting the approved time input. If the actual contract provides a different calculation basis, that basis must govern the reviewed calculation. The preparer should not select a familiar spreadsheet convention without checking.
Where the relevant rate changes across the proposed interval, identify the applicable segments before calculating. A single blended figure can conceal an incorrect allocation even when the total looks plausible. Obtain clarification if the commercial agreement does not make the rate treatment clear.
Keep any approximate boundary visible. A precise currency result should not suggest greater certainty than the underlying time evidence supports. If the principal authorises a provisional figure, preserve that status in the account instruction.
Reconcile the account history
An adjustment should be checked against what has already happened financially. The same event may have appeared as a provisional credit, a later correction or a settlement entry. Reviewing only the newest calculation can miss that history.
Use an event reference to connect the entries, but inspect their substance as well. Similar descriptions do not necessarily concern the same period, while differently worded descriptions may refer to the same economic adjustment. The reviewer needs a reconciliation rather than a text match.
Identify whether an existing credit is to remain, be reversed or be increased. Those are different posting instructions. A revised total should not be entered as an additional credit unless that is the intended and authorised treatment.
The reconciliation should also identify the account against which an adjustment is applied. An agreed amount does not, by itself, answer the separate implementation question of where and how the parties intend it to appear.
Illustrative example: correcting a duplicate-credit risk
In this ILLUSTRATIVE fictional example, assume the parties have already approved a hire adjustment for 9 hours at a daily rate of USD 24,000. They expressly use 24 hours per day for this calculation. The legal basis and time boundaries are assumed, not established by the arithmetic.
The approved total is 9 ÷ 24 × USD 24,000 = USD 9,000. An earlier provisional credit of USD 6,000 has already been applied for the same event and is to remain in place. The additional credit required is therefore USD 9,000 − USD 6,000 = USD 3,000.
| Account component | Fictional amount |
|---|---|
| Approved total adjustment | USD 9,000 |
| Existing credit retained | USD 6,000 |
| Additional credit to post | USD 3,000 |
| Total if the full revised amount were wrongly added | USD 15,000 |
| Excess credit in that error | USD 6,000 |
The arithmetic error would not be in the time-rate calculation. It would arise from treating the revised total as an additional transaction. The reviewer prevents it by reconciling the intended final position with the amount already applied. Taxes, commissions, other expenses and exchange differences are excluded from this fictional model.
Keep other expenses outside the hire line until reviewed
A vessel incident may generate expense invoices as well as a proposed hire adjustment. The reviewer should identify each category and its claimed basis separately. A repair-related narrative does not make every expense part of the hire calculation.
Do not add an invoice merely because it shares the event reference. Ask whether it has been separately reviewed, whether the amount is supported and what treatment the principal has authorised. This prevents a clean hire calculation from concealing an unresolved reimbursement claim.
Similarly, do not assume that an agreed hire figure settles every other consequence of the incident. If the parties intend a broader settlement, its scope needs appropriate review and clear implementation. The account worksheet should reflect that reviewed scope rather than supply it by implication.
Separate lines help the counterparty understand the claim and allow the principal to negotiate components without losing the relationship between them.
Route exceptions before the account is issued
| Review finding | Decision required | Appropriate next action |
|---|---|---|
| Time input differs from the reviewed period | Which input is authorised? | Return to the commercial reviewer |
| Rate basis is unclear | Which contractual rate applies? | Clarify the agreement and obtain advice if needed |
| Existing credit covers the same event | What final balance is intended? | Reconcile before posting |
| Related expense lacks an agreed basis | Is it part of this adjustment? | Review the expense separately |
| Counterparty disputes treatment | What action is authorised meanwhile? | Escalate to the principal and adviser |
| Posting differs from the instruction | What correction is needed? | Investigate and reconcile the ledger |
This original routing table is designed to stop account preparation from silently resolving issues outside its scope. It also avoids unnecessary escalation of a simple posting mismatch as though it were a new contractual dispute.
Confirm the implemented result
After posting, compare the resulting account position with the approved instruction. Checking only that a transaction exists is insufficient; confirm that its direction, amount and relationship to prior entries produce the intended result.
Where a correction reverses an earlier item, retain the relationship between them. A reader should be able to reconstruct the final position without assuming that every visible credit remains effective. Clear reconciliation is especially useful when the account moves between teams or systems.
If the counterparty's statement differs, identify the specific unmatched entry or interpretation. Avoid sending the entire incident history when the immediate question is whether an approved credit has been recognised. Escalate back to the substantive dispute only where that is the actual cause of the mismatch.
Common mistakes
A common error is treating the reviewed total as a fresh credit without subtracting a retained earlier adjustment. Another is applying a convenient rate or duration rather than the authorised calculation basis.
Do not confuse an internal estimate with permission to withhold hire. Keep unrelated expenses distinct and verify the final ledger position after implementation. Correct arithmetic is only one part of a correct account.
Where Zeaclub fits
Zeaclub provides a multi-party shared workspace for owners, charterers, brokers and port agents.
Zeaclub offers digitalised procedures across the voyage workflow.
Explore Zeaclub
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 correct calculation justify deducting hire?
No. Entitlement and any restrictions on deduction need separate review under the actual contract. Arithmetic can quantify an assumed or approved position without establishing the right to implement it.
Why review prior credits for the same incident?
They may already satisfy part of the intended adjustment. The new posting should reconcile to the approved final position, rather than add the revised total on top of an existing credit.
Should incident expenses be included in the hire adjustment?
Only through a separately reviewed and authorised basis. Identify their nature and treatment clearly instead of assuming that every cost connected with the incident belongs in the hire line.
What should the final posting check confirm?
Confirm that the implemented entries produce the authorised result, including the treatment of earlier credits or reversals. A transaction's presence alone does not show that the account is correct.