[CA] [CA11] AXIOM 9 RV for use with C-70 transducer(s)

[SeaBat]

When a 2006 27' Sea Ray 270 Amberjack was purchased new there was installed a Raymarine C-70 MFD, which was connected to a Digital Sounder Module (DSM) - 300. To the left side of the DSM is connected to a transducer cable that, according to p.17 of the Nov 2004 DSM300 Installation Manual, is a 7 pin female connector. This cable is actually a Y-cable, believed to be part no. E66022, which is, in turn, connected to a combined speed/temperature transducer, which is mounted on the transom, and has a 3 pin female connector, and a depth only transducer, which is thru hull, and has a 7 pin female connector. Both transducer are AirMar products. The depth only one is believed to be 600W, part no./model E66013/P319, as it is the one listed on p. 20 of the above referenced Installation Manual that best fits its description.

Please find attached the following two pics:
1) The female connector of the Y cable that goes into the DSM
2) The Y cable that I believe shows the two separate transducer cables

I understand that it is to be possible to connect an AXIOM 9 RV to an existing C-70 transducer, but exactly how and with what specific cables is one to do this, keeping in mind whether the cable end is female or male?

Thanks in advance for assistance,
SeaBat