"M and W" shore mounted leading beacons, installed at Port of Mackay, Australia, are constructed of slats and employ reflected rays of sun to warn vessels of proximity of underwater pipe and cable, so that latter may not be damaged by dropped anchors; principle of design is explained; how reduction in cost was effected.
Marine beacons
Dock Harbour Authority
Dock and Harbour Authority ; 29 , n 331
1948
2 pages
Aufsatz (Zeitschrift)
Englisch
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