what can you tell me about the early submersibles?
The first submersible of whose construction there exists reliable information was designed and built in 1620.
Submarine

The first submersible of whose construction there exists reliable information was designed and built in 1620 by Cornelis Drebbel
how old was the last king of england when he died 57 who is george vi? He was King of the United Kingdom. was he part of the military? Yes, he was appointed Officer in Charge of Boys at the Royal Naval Air Service's training establishment at Cranwell. when was this? 1918 when was this above mentioned institute established? 1 July 1914 how is it associated with the ww i? After the Second Battle of Gaza, RNAS aircraft attacked Tulkarm in the Judean Hills. can you mention some of their roles? Fleet reconnaissance and patrolling coasts for enemy ships and submarines. where did the last mode of transportation aforesaid get its name from? It is an armed, submersible warship, the more general meaning is for any type of submersible craft.
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Submarine [SEP] Early submersibles
According to a report in "Opusculum Taisnieri" published in 1562: In 1578, the English mathematician William Bourne recorded in his book "Inventions or Devises" one of the first plans for an underwater navigation vehicle. A few years later the Scottish mathematician and theologian John Napier wrote in his "Secret Inventions" (1596) that "These inventions besides devises of sayling under water with divers, other devises and strategems for harming of the enemyes by the Grace of God and worke of expert Craftsmen I hope to perform." It's unclear whether he ever carried out his idea. The first submersible of whose construction there exists reliable information was designed and built in 1620 by Cornelis Drebbel, a Dutchman in the service of James I of England.