Airmar B744VL Long Stem Bronze Thru-Hull D/S/T w/FB 8-Pin [B744VL-8G]B744VL Long Stem Bronze Thru Hull D S T with FB 8 Pin The B744VL is a TRIDUCER Multisensor featuring depth, speed, and temperature in a single housing. The 50 200 kHz, dual frequency, single, ceramic element provides great target detail in shallow water at 200 kHz and good deep water bottom tracking at 50 kHz. The B744VLs extended stem length has the extra height needed for steep deadrise vessels or thick, cored fiberglass or wood hulls. The required