Portfolio, Investment & Restructuring
Credit Migration in Maritime Loan Books
Summary
Credit migration records movement of borrowers or exposures between internal risk grades over time.
Why this matters in ship finance
Migration can reveal deterioration before a missed payment or formal default.
The concept
Rating transitions depend on underlying models, macro conditions and observation horizons. CRR requirements govern certain regulated bank rating processes, not every shipping advisory tool.
How it is used in practice
Build transition matrices by segment, age and cycle phase; compare model grades with realised arrears, covenant breaches and write-offs.
Practical issues
Do not treat a migration matrix estimated from sparse, selected shipping loan data as a universal probability law.
How ShipFinance.ai uses this concept
Track grade changes, migration drivers and downstream expected-loss sensitivities.
Key takeaways
- Migration is different from observed default.
- Transition estimates require adequate sample and time windows.
- Early grade movement supports intervention.