Sonobuoy
device · 1942 · Electric age
A dropped buoy with a hydrophone.
What it is made of
- Hydrophone — has part. A hydrophone.
- Radio — has part. A radio transmitter.
Principles and materials it uses
- Aluminium — is made of. The housing is aluminium.
device · 1942 · Electric age
A dropped buoy with a hydrophone.