Essay about Invention of SUBMARINES | use of submarines.
🟠 What is submarine ?
The submarine is a vessel which is closed by all sides and capable of floating both on and under water surface .It can go very deep into the sea.
🟠 History of submarines :
The first submarine was designed by Carnelius Van Drebbele of Holland in 1620. It
was made up of wood and wrapped leather.
It will go 2 to3 meter deep in sea .
Later many researches were made to create submarine at last in 1880 a submarine was made and propelled by steam engine .
Later submarine were modified for diesel engine in 1St world war submarines were used successfully .
In 2nd world war it use in sea warfare .
In 2nd world war it use in sea warfare .
🟠 Developed modern submarines
Now a days Nuclear power submarines were used it was made by metal sheets and modern equipment like sonars , radars, Periscope etc
Missiles were use to destroy enemy ships
Periscope is used to sea under water surface.
Submarines are useful in Oceanography ( study of ocean) .
Submarines are useful in Oceanography ( study of ocean) .
It used in search and rescue missions.submarines are useful in defense purpose of every nation.
Used to repair underground water cable , network cable etc.
Used to repair underground water cable , network cable etc.
Use to check ocean environmental changes and ocean pollutions .
Now a days submarines are important for navy in all countries,