big trouble i think, hoping

[Chuck - Raymarine - Moderator]

silentfaith,

Unfortunately, while the P79 instrument transducer may be applicable ST60, i40, i50, iTC-5, and ST290 Depth Pods, the i40/ST40 Depth/Bidata Instruments do not output sufficient power to be used with in-hull depth transducers. Should an i40/ST40 Depth/Bidata Instrument be installed onboard the vessel then it should be interfaced to a thru-hull transducer. Should hauling the boat be a concern, and should your hull thickness/composition be able to accommodate the P79, then you may want to instead consider installing an i50 Depth Display, as it is designed with sufficient power to be used with in-hull transducers such as the P79. Regarding product pricing, I suggest that you shop the Internet for the best price.