Did Gemans invent...

Originally Posted by NightCrawler

So the British came up with hydrophone, and the German use it against them?
Because Hydrophone had a longer range than Sonar.. so the German knows who ever is nearby than the Destroyer....

Specially in early years 39, till the Sonar pops up...

Another question that i stated, what and how did the Americans check underwater when there is a ship nearby? do they pop the scope and look around every 30 minutes?
Or they have there own kind of hydrophone, after all the British invent the hydrophone, and don't want to share with the Americans???

OT,
I know Germany invented V1, V2 rockets, and rocket-fuel, and Jetplanes(Messerschmitt Me 262)
And for the American lucky to bring over Wernher von Braun, to continue making rockets for the NASA....

Actually hydrophones = passive sonar. ASDIC = active sonar.

Only US Fleet Boats could cruise submerged using air search radar (SD), surface search radar (SJ) and periscopes for target and threat detection, something not even a Type XXI could do. This in addition to passive and active sonar. The British did share hydrophone/sonar technology with the USN in the early years but American electronics made their sets smaller and generally more reliable.

American Robert Goddard invented the liquid fueled rocket without which the V2 would have been impossible. Von Braun was probably luckier since the agency that he was responsible for made much use of slave labour from concentration camps. Had he not been whisked off the the USA he may very well have ended up in the Soviet Union or Spandau prison for crimes against humanity.

A serving RAF officer named Frank Whittle developed the turbo jet engine at the same time as German university student Hans von Ohain. The German's flew the first jet powered aircraft but the British were close behind and Whittles' design was superior to Ohain's in many respects.

The German navy's active sonar was inferior to the RN sets in most respects from the start but German passive sets (hydrophones) were first class.