The Civil engineer and architect's journal, scientific and railway gazette (1839)
London : [William Laxton] · leaf 213
t up through the buoyed channel; and vessels requiring a Wyre pilot willbe understood at this lighthouse, if showing a weft at the peak, besides theirpilot-jack at the mast-head; whence, a pilot-jack will also be hoisted untilshe is provided. The Wyre pilot-boats are of sloop and yawl rig, with… … REFERENCE. A, Marl formation ; the screws are 10 feet below low water mark. B, Sub-stratum of sand. C, Low water equinoctial springs. D, Low water ordinary tides, 2 feet above ditto. E, Ditto neap tides, 9 feet ditto. F, Half-tide level, 15 feet ditto. G, High water neaps, 21 feet ditto.H, Ditto…
Architecture · Civil engineering · Science
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