This page is not finished yet, BUT
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In 1578,the first submarine was designed by William Bourn,but it never got passed the drawing stage,he designed the use of ballast tanks which could be filled with sea water to enable the vessel to submerge.
WE ARE NOW APPROACHING THE TIME WHEN MANY MORE INVENTORS WOULD TAKE AN INTEREST IN THE PROSPECT OF SAILING BENEATH THE SEA.
Simon Lake's Argonaught Jr
1902, The German navy was initially unimpressed by the prospect of under water craft,in fact Admiral Alfred von Tirpitz stated that "The submarine is,at present,of no great value in the war at Sea,and will not waste money on experiments" However Kaiser Wilhelm II was impressed and instructed his brother,an Admiral,to take a ride in one.
The race was now getting serious, we all know how the German U-Boats progressed into an efficient fighting force in both the world wars.Their "wolf packs"sank more tonnage than any others of their time.