The Merchant Shipping (Smooth and Partially Smooth Waters) Regulations 1987
These Regulations replace the Merchant Shipping (Smooth and Partially Smooth Waters) Rules 1977 as amended in 1977, 1978 and 1984. They extend the winter and summer partially smooth water limits for Lerwick to the northward and specify a new winter area of partially smooth waters in Dales Voe and a new area of smooth waters at Aberystwyth. In other respects the limits of smooth and partially smooth waters remain unchanged.