688 Attack Sub

SONAR IDENTIFICATION GUIDE:

American and Allied Ships:

Submarines:
688 Class Attack Sub - 3 narrow peaks
Trafalgar Class Fast Attack Sub - 2 wide + 1 narrow peak

Torpedoes:
Mark 48 Torpedo - 1 wide peak (right)
Mark 50 Torpedo - mixed peaks (right)
Spearfish Torpedo - narrow peaks (right)

Military Surface Vessels:
Oliver Hazard Perry Class Frigate - 1 wide peak (left)
Forrest Sherman Class Destroyer - 1 narrow peak (far left)
Kidd Class Guided Missile Destroyer - mixed peaks (left)
Nimitz Class Aircraft Carrier - mixed peaks (left)
Iowa Class Battleship - 1 wide peak (left-center)

Civilian Surface Vessels:
Merchant Ship - 1 narrow peak
Cargo Ship - 1 wide peak (far left)
Sacramento Class Oiler - 1 very wide peak (far left)
Tanker - 2 peaks spread apart

Soviet and Allied Vessels:

Submarines:
Alpha Class Attack Sub - 1 wide + 1 narrow peak
Victor III Class Fast Attack Sub - 1 wide peak (center)
Akula Class Fast Attack Sub - 1 very wide peak (center)
Foxtrot Class Diesel Sub - 2 peaks spread apart
Charlie II Guided Missile Sub - 1 very wide peak
Oscar Class Missile Sub - mixed wide peaks
Typhoon Class SSBN - 1 narrow peak (right)

Torpedoes:
450mm Torpedo - 1 wide peak (right)
533mm Torpedo - 1 wide peak (right)

Military Surface Vessels:
Koni Class Frigate - 2 peaks spread (left)
Kirov - 1 wide peak (far left)
Krivak II - 1 narrow peak
Slava Class Cruiser - 2 narrow peaks
Kara Class Missile Cruiser - 1 wide peak

(Source: Lemon Amiga)