Show SHIPS ALONE platte fougere lighthouse Ugh only unattended one built possesses a powerful fog signal and marks entrance to russell chan nel leading to guernsey capital of st peters port london what Is declared to be the only unattended lighthouse built on a rock possessing a pou powerful tog fog signal is the recently com plated platte fougere lighthouse marking the entrance ep trance to the russell channel leading to the guernsey capital of st peters peter a port pom a spot which figures in victor hogug great ro mance I 1 the tellers of the sea this unattended tower built of ferr ocon crete which rises on a wave washed rock is of irregular octagonal shape measuring 14 feet and 17 feet across the faces and SO 80 feet in height the head bead of the rock on chich it stands Is visible only at low tide while it Is difficult to approach even in the smoothest weather owing to the tides and currents much bluch of the foundation work mark had to be carried out under water the tower is solid tor for a height of 46 feet above the rock and the base Is formed of portland cement placed in iron molds with mith iron bars driven into the solid rock to anchor the concrete firmly on the side to which the building Is exposed to the heaviest seas massive beams of at rolled steel are driven into the rock so as to 0 impart additional strength to the part of the tower where the greatest strains are likely to be set up on the entrance level la Is a corn com apartment part ment containing an electric motor and air compressor while on the floor immediately above Is a duplicate in stall stal atlon lation the firem projects through the top of the tower the he trumpet be ing so turned as to throw the sounds in a horizontal direction over the wa ter on the top of at the tower is a small automatic acetylene gas plant and light these devices many of which are aret the invention of the engl neer in chief mr E 0 catford are sont ont rolled from the shore station one and ind one quarter miles distant by means of 9 submarine cable made specially for the work it Is it 11 inches in diameter and weighs 46 45 tons to the nautical mile the foghorn has been heard 30 30 miles away on the french coast while lz W tp AI w 1 i unattended lighthouse off guernsey the light Is brought into being at sunset and automatically extinguished at dawn the tower and its installation cost 98 8 an ordinary stone structure would have demanded five or six times this amount and would have been far more expensive to maintain thus guernsey a unattended light bouse house has solved a vexed problem |