USS Bowfin (SS-287)
The ears of the Boat
On a fully submerged submarine of World War II, radar was rendered useless, and observations through the periscope were, by necessity and design limitations, extremely limited. The submarine had to depend chiefly on listening.
Sonar (SOund Navigation And Ranging) became the ears of the boat by using hydrophones to detect and track targets. There were two main types of sonar listening gear on a World War II submarine like USS Bowfin - sonic and supersonic.
Secrets of the Sub
|How Does A Sub Stay So Quiet|
How do submarines stay so quiet?
Submarines are the ultimate “stealth weapon. Remaining underwater to attack or use its sensors, quietness is critical. Through design, modern nuclear submarines have equipment mounted on special mounts to isolate the noise from the outside and reduce the noise signature of the sub in the ocean. Rotating equipment is checked from the design through operation so it is always quiet and it is immediately repaired if it is not operating quietly. The sub checks itself with its own acoustic sensors and establishes the most quiet lineup of equipment for normal or critical operations. Overall, the reason the submarine is so quiet is because every member of the crew knows how important it is to remain quiet and undetected ensuring the submarine can perform all of its mission.