Lowrance 136-03 13603 136 03 Navico P79 In-Hull Transducer – $128.95 Lowrance 136-03 13603 136 03 Navico P79 In-Hull Transducer Only $128.95 While Supplies Last. Lowrance Navico P79 In-Hull Transducer Brand New Includes Two Year Warranty, Product # 136-03 The Lowrance 136-03 is a P79 in-hull depth only transducer that mounts inside a hull. It gets easily adjust to hull deadrise angles up to 22° . This transducer consists of More Info