From 'Y' to 'SV'
| Legacy (roughly) | Modern SV equivalent (indicative) |
|---|---|
| MEOL(Y) | Marine Engine Operator Licence (Small Vessel) / entry operator level |
| Y4 / Y3 | SV Engineer Officer of the Watch (operational watchkeeping) |
| Y2 | SV Chief Engineer <500 GT / <3000 kW |
| Y1 | SV Chief Engineer <3000 GT / <9000 kW |
| Indicative mapping only — confirm the exact equivalence with the MCA. |
The mapping is indicative and exists to help a holder understand roughly where their legacy grade sits in the modern framework. Because both schemes are built on the same logic of tonnage, power and responsibility, the correspondence is fairly natural — the entry operator grades align, the watchkeeping grades align, and the chief grades align by tonnage. But the exact equivalence, and any bridging required to convert a legacy certificate to a modern one, are determined by the MCA's transition arrangements, not by this table.
WARNING — Indicative, not definitive This mapping is a general guide to help holders understand where they sit. The MCA's transition arrangements determine the exact equivalence and any bridging required — always confirm your own position with the MCA before relying on an equivalence.
NOTE — The same structure makes mapping natural Because the Y-series and the SV scheme share the tonnage/power/responsibility structure, the correspondence between them is fairly natural. That is why an approximate mapping can be given at all — but the detail is the MCA's to set.