Omnidirectional sonar can be a game-changer, if you know how to use it correctly.
/-/media/sites/furuno/product_fea
Using Personal Bathymetric Generators
On the water with Raymarine Axiom RealVision 3D sonar in 360
Big Boat Sonar Evolves - InTheBite
SCAN-650 Sector Scanning Sonar
Ruby Engineering
Green radar screen, circular 360 degree scale, vector template
Using Personal Bathymetric Generators
360 degree sonar (video) - Texas Fish & Game Magazine
Ping360 Scanning Imaging Sonar for Underwater ROVs
DIY 360 Degree SODAR Device : 11 Steps (with Pictures) - Instructables
Trawl Sonar TS-360 - Furuno Norge AS
Impact Subsea ISS360 Sonar
HUMMINBIRD MEGA 360 UNIVERSAL - Dive Rescue International