The length of time a submarine can stay submerged without resurfacing depends on its design and capabilities. Some modern submarines can stay submerged for several months, while others may only be able to stay submerged for a few days. It is important for submarines to resurface periodically to replenish supplies and allow for maintenance and crew rest.
A submarine, theoretically, can go as long as the food for its sailors last. A submarine can make oxygen, distill water, remove CO2 and other pollutants, and provide almost anything needed to survive at sea and underwater for nearly an indefinite period of time. Modern nuclear-powered submarines' reactors will last without refueling for the life of the submarine - about 20 years. In 1960, the nuclear-powered submarine USS Triton circumnavigated the globe submerged.
A submarine, theoretically, can go as long as the food for its sailors last. A submarine can make oxygen, distill water, remove CO2 and other pollutants, and provide almost anything needed to survive at sea and underwater for nearly an indefinite period of time. Modern nuclear-powered submarines' reactors will last without refueling for the life of the submarine - about 20 years. In 1960, the nuclear-powered submarine USS Triton circumnavigated the globe submerged.
Not long
You need energy to survive, so you cannot survive without energy.
Not for very long. People cannot survive for very long without water, anywhere.
You can survive 2-3 days without any liquids
a man can not survive for a week without water
A bee can typically survive for about 1-2 days without food.
Spiders can survive for several weeks without food and for a few days without water.
A human can survive without food for about 1 to 2 months, as long as they are consuming water.
A Long Time
A foot long submarine sandwich is 0.000189393939 miles long.