<Li> Tis private: a man may thus go to any coast in the world invisibly, without discovery or prevented in his journey . </Li> <Li> Tis safe, from the uncertainty of Tides, and the violence of Tempests, which do never move the sea above five or six paces deep . From Pirates and Robbers which do so infest other voyages; from ice and great frost, which do so much endanger the passages towards the Poles . </Li> <Li> It may be of great advantages against a Navy of enemies, who by this may be undermined in the water and blown up . </Li> <Li> It may be of special use for the relief of any place besieged by water, to convey unto them invisible supplies; and so likewise for the surprisal of any place that is accessible by water . </Li>

The first submarine was made in which country