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==Power sources==

==Power sources==

Various different power sources have been used on submarines over the years.  The ''Hunley'' was powered by its crew turning a crank which was connected to the propeller.  Petrol engines have also been used, but they gave way to diesel engines.  Hydrogen peroxide was used in some German submarines during [[World War II]].  More recently nuclear power has been used.  It should be noted it this context that the term "nuclear submarine" refers to a submarine that uses nuclear power for propulsion, not necessarily one which carries nuclear weapons.

Various different power sources have been used on submarines over the years.  The ''Hunley'' was powered by its crew turning a crank which was connected to the propeller.  [[Gasoline|Petrol]] engines have also been used, but they gave way to [[diesel engine]]s.  [[Hydrogen peroxide]] was used in some German submarines during [[World War II]].  More recently [[nuclear power]] has been used.  It should be noted it this context that the term "nuclear submarine" refers to a submarine that uses nuclear power for propulsion, not necessarily one which carries [[nuclear weapon]]s.

==United States Navy==

==United States Navy==