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A simpler structure, used in tranquil bays and in the less turbulent waters of the Gulf, is the "screw-pile" lighthouse, built upon a skeleton framework of iron piling, the piles having been so designed that they bore into the bed of the ocean like augers on being turned.
But while the preparatory steps for this lighthouse were being taken, a screw-pile lighthouse was begun and completed at Port Fleetwood on the Wyre, near Lancaster; which being the first of the kind ever constructed, deserves particular notice. The preparatory stages were of a similar nature to those already described.
A shoal of flying-fish got up out of the warm, shining water and ran away over the ripples like so many silver rats; yellow tangles of Gulf-weed swam in close squadron on the emerald sea; and on the western horizon screw-pile lighthouses stood up out of the water, marking the nearness of the low-lying Floridan beaches, and reminding one of mysterious Everglades beyond.
Then look at the Hyalonemas, or glass-rope ocean floor by a twisted wisp of strong flexible flint needles, somewhat on the principle of a screw-pile.
He invoked the favour of the Most High upon that journey, implored His blessing on men's toil and on the secret purposes of their hearts; the steamer pounded in the dusk the calm water of the Strait; and far astern of the pilgrim ship a screw-pile lighthouse, planted by unbelievers on a treacherous shoal, seemed to wink at her its eye of flame, as if in derision of her errand of faith.
This beacon was completed in September 1821. Floating Lights Objections to Mitchell’s Screw-moorings Experiments on the Maplin Sand Foundation Erection of Screw-pile Lighthouse Details of the Wyre Lighthouse Proposed Lighthouse on the Goodwin Sands Metallic Lighthouses Advantages of Metal over Stone Details of Cast-iron Lighthouse at Morant Point, Jamaica.
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