Hydrophone submarine detection, World War I. British Royal Navy lieutenant operating a hydrophone listening device on board an armed trawler that is on anti-submarine patrol during World War I (1914-1918). A hydrophone is an underwater microphone, being used here to detect the sound of a submarine's engines. The headphones are being used to listen, while the microphone has been lowered into the water (lower right). For a hydrophone in use, see image C036/0820.

px px dpi = cm x cm = MB
Details

Creative#:

TOP20028279

Source:

達志影像

Authorization Type:

RM

Release Information:

須由TPG 完整授權

Model Release:

N/A

Property Release:

N/A

Right to Privacy:

No

Same folder images:

Same folder images