Show MAKING OCEAN TRAVEL SAFE eleven british vessels are cond con I 1 scantly engaged encased in detecting 1 seacoast changes Cli anoe few people realize how low useless every ship on oil the sea bea from rom a dread naught to a trawl steamer would bo be but for tho the labor of tho the if coasts and sens rena were unmapped disasters dis naters would bo be continually overtaking ocean oceangoing going ships for submerged rocks shoals sea currents rand and many other similar to tile tho mariner could not bo be located 1 every nation possessing a coastline retains special vessels for tho the purpose of sea bea surveying equipped with various necessary sary instruments and a carefully trained staff groat great britain has about eleven ships engaged in such work both in home waters and in foreign sm seab arid and nearly a thousand men aro are employed says london tit aits the sea surveying vessels voy ago 6 round tho ilia coastline making frequent soundings arid and especially watching for any dangerous chango in the shapo shape of at the sea boa bottom for tile tho latter Is continually shifting as tides tide 8 arid and currents collect sand at one point and deposit it at another nn other while the action of the waves Is continually changing the contour of our coastline tho speed with which tho the chart makers work can bo be gauged from the fact that in cne year british hy drog raphers surveyed survoy od miles of coastline arid and rounded bounded 2819 square miles of ocean in the same period whenever possible sea bea captains lend a helping hand to the alio chart makers by recording tho the presence of any unrecorded rock or abdal which they may observe during their voyage tile the sea surveyors then investigate tile tho marin ors ers story and this often monna moans voyages at a moments notice to distant parts of tho globo globe such expeditions are hastily carried out for it tin uncharted chart rocks lurk near shipping lanes they can causo cause gravo grave disaster it if not located immediately on one occa occasion slot a n largo large granite rock for five years stood eight feet below the water close to a crowded shipping croutc which no chart recorded until it was accidentally discovered |