16.4 feet (5 meter) extension cable for the Sonihull Mono and Duo systems.
Here's what's included.
Here are the many related items for the Sonishfat to fully protect your vessel from fouling.
Single transducer system
Dual transducer system
Protection for 2" - 10" piping
Protect your stern drive or saildrive
Protect your prop shaft & propellers