Raymarine Depth Transducer [T912]These transducers have been included as standard with mn100 T100 Speed and Depth systems since August 2004. Prior to this the T100 was supplied with the T905 Shorty Depth Transducer. Supplied with 6 meters of cable. Features: 2" (51mm) diameter Max. Hull thickness 2. 125" (55mm) Removeable for cleaning Retractable Thru Hull Depth Transducer Specifications: Chirp: No Temperature: No Speed Included: No Mounting Style: Thru Hull Box Dimensions: 4"H x 5"W