Highly directive underwater acoustic receiver

Hinge-modified flextensional transducer

Horizontal geophone transducer assembly

Housing for a seismic sensing element and a seismic sensor

Housing for a sonic transducer

Hybrid-drive multi-mode pipe projector

Hydraulic antivibratory devices

Hydraulic vibrator with wide dynamic range

Hydroacoustic apparatus

Hydrogen generator

Hydrophone

Hydrophone

Hydrophone

Hydrophone and process for manufacturing it

Hydrophone arrangement

Hydrophone arrangement and bunker for housing same

Hydrophone array

Hydrophone array

Hydrophone array module

Hydrophone array with individually switchable hydrophone...