Primarily the IJN & USN used subs for "battle." Reconnaissance and picking off special warships (flagships, carriers, etc.) was their mission. DKM primarily used their subs for merchant ship sinkings.
the battle of butthed island
The role of submarines during the second world war was primarily the destruction of enemy commerce, and occasionally heavy naval units such as battleships, cruisers, and aircraft carriers. Since the battle of the atlantic was fought primarily against German Submarines which were targeting Allied merchant vessels, there would have been very little point to using submarines.
Submarines typically use air tanks. Oxygen is very dangerous and very flammable. It's use is very limited on submarines for that reason.
submarines and bats both use sonar. Calvin was here
oceanographers use submarines to take pictures of sea life and things that have been found or things that they are looking for.
The marines do not use submarines. Only the Navy does.
Most submarines have propellers that spin, pushing them forward. A few smaller research submarines use a water jet for propulsion.
Submarines.
The Germans were the first to use Submarines in World War 1. Now i believe that the marines now do at times.
During World War II, submarines played a crucial role in naval warfare, particularly with Germany's U-boats and the Allies' submarines like those from the United States and the United Kingdom. U-boats targeted merchant ships in the Atlantic, disrupting supply lines and contributing to the Battle of the Atlantic. Allied submarines, especially in the Pacific, effectively attacked Japanese shipping and naval forces, significantly weakening their logistics. The use of submarines marked a shift in naval strategy, emphasizing stealth and surprise in maritime combat.
We know one Japanese sub was there for certain; it sunk the carrier Yorktown and destroyer Hamman with one torpedo salvo. Japan deployed about 13 submarines for the Midway operation, including the I-168, which sank Yorktown and Hamman as mentioned above. The U.S. had 19 submarines stationed on patrol lines around Midway but they had little direct impact on the battle.
Sinking ships; exploring the depths.