National Geographic : 1938 Dec
© National Geographic Society Finlay Photograph by B.Anthony Stewart SAILING SKIPPERS. NEARING ST. MARY'S, DREAD PORTH CRESSA'S REEFS AND THE JAGGED ROCKS OFPENINNIS HEAD During fogs, the booming roar heard here every five minutes above the surf comes from the lighthouse onBishop Rock, sixmiles outtosea. Keepers on this familiar landmark to transatlantic travelers explode charges of tonite to warn off mist-blinded ships. Largest vessel ever wrecked onthe islands was the 660-foot Minnehaha, bound from New York to London, which crashed in a fog, April, 1910.Ships' boats and craft from Bryher saved passengers and crew. The greatest tragedy occurred in 1707 when four ships of the British fleet were wrecked and some 2,000 sailors drowned.