The Germans were the first to use Submarines in World War 1. Now i believe that the marines now do at times.
The marines do not use submarines. Only the Navy does.
Big ships such as Navy's have periscopes and submarines have it too. If it is high for you to see you will use an periscopes.
It uses echo location for all underwater submarines and when the signal comes back you will be able to see whats in front of you.
1. Ballistic submarines 2. Attack submarines
Echo sounding is used to get indication of any difference in the properties of the water. Fish finding, and depth sounding would be obvious uses. Other uses including locating enemy submarines or warships.
Echo sounding is used to get indication of any difference in the properties of the water. Fish finding, and depth sounding would be obvious uses. Other uses including locating enemy submarines or warships.
Positive Buoyancy. When submarine submerges, it initially uses negative buoyancy to submerge, and then levels out to neutral buoyancy.
SONAR on submarines and shipsUltrasound medical imaging machinesSpeakersHeadphonesMicrophonesHearing aidsDoctor's stethoscope (passive)Megaphone (passive)etc.
Boats, Subs, Submarines, Home.
Yes, North Korea has submarines
Submarines - poem - was created in 1917.
One of our Submarines was created in 1982.