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The Dark Smoke (Permitted Periods) (Vessels) Regulations 1958
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SCHEDULE
| (1) | (2) |
|---|---|
| Class of case | Permitted period for emission of dark smoke |
| 1. Emissions from a forced draught oil-fired boiler furnace, or an oil engine. | 10 minutes in the aggregate in any period of 2 hours. |
| 2. Emissions from a natural draught oil-fired boiler furnace (except in the cases falling within class 4 below). | 10 minutes in the aggregate in any period of 1 hour. |
| 3. Emissions from a coal-fired boiler furnace:— | |
| (a) when the vessel is not under way (except in the cases falling within class 4 below). | 10 minutes in the aggregate in any period of 1 hour. |
| (b) when the vessel is under way | 20 minutes in the aggregate in any period of 1 hour. |
| 4. Emissions from a natural draught oil-fired boiler furnace or a coal-fired boiler furnace in the following cases:— | |
| (a) a vessel with funnels shortened for the purpose of navigating the Manchester Ship Canal; | |
| (b) a tug not under way, but preparing to get under way or supplying power to other vessels or to shore installations; | 20 minutes in the aggregate in any period of 1 hour. |
| (c) a vessel not under way but using main power for the purpose of dredging, lifting, pumping or performing some other special operation for which the vessel is designed. | |
| 5. Emissions from any other source | 5 minutes in the aggregate in any period of 1 hour. |
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