Linked from

The 27 pages that link to Sonar, each with the reason it gives.

• Battle of the AtlanticRelated: Sonar enabled escorts to track submerged U-boats that radar could not detect.

• SoundRelated: Sonar exploits how sound travels through water and reflects from objects.

• Sound waveRelated: Sonar infers distance and shape from sound waves reflected by underwater targets.

• ReflectionRelated: Returned sound reflections provide range and structural information underwater.

• Toothed whaleRelated: Some naval sonar can disrupt toothed-whale behavior and is linked to strandings.

• Anti-submarine warfareRelated: Active and passive sonar reveal submarines through echoes or sounds they emit.

• Longitudinal waveRelated: Sonar pulses travel through water mainly as longitudinal sound waves.

• Purse seiningRelated: Sonar helps locate schools and estimate their depth before setting the net.

• Ice fishingRelated: Portable sonar can reveal fish depth and underwater structure beneath an ice hole.

• Purse seineRelated: Fishing vessels use sonar to locate schools before setting the net.

• Marine geologyRelated: Acoustic sounding transformed the coverage and precision of seafloor maps.

• Depth chargeRelated: Sonar supplies the target bearing and range needed to place a depth charge attack.

• U-boatRelated: Allied escorts used sonar to search for submerged U-boats.

• WarshipRelated: Warships use sonar to find submarines and navigate underwater hazards.

• Big-game fishingRelated: Fish finders use sonar to reveal bait schools, depth changes, and fish beneath a boat.

• MesoplodonRelated: Military sonar has been associated with mass strandings of some beaked whales.

• Acoustic techniquesRelated: Echo timing and direction reveal underwater objects and seafloor structure.

• Frederic John WalkerRelated: Sonar gave Walker’s escorts the contact needed to prosecute submerged U-boats.