Periodically I am asked for recommendations on where to purchase a towed hydrophone array, or how to build one. For years we developed/built towed arrays and have shared these methods (last version available here, note this is somewhat outdated). We also worked with a few companies to develop a volumetric array (see here).
Many researchers do not have the capability to build their own hydrophones, and we no longer conduct surveys using towed arrays and I am not aware of the current state of towed array development.
Is anyone aware of options to build, purchase, or rent towed hydrophone arrays?