Humminbird XM 14 20 MSI T Mega SI/DI Transom Mount Transducer - 14 Pin Boat E Scow The 399-1M can be strapped

The 399-1M can be strapped to a larger mast using steel banding (not supplied)

jib sheet and mainsheet cleating

The spring on the HTE (high-threshold engage) version of the 57 mm Carbo Ratchamatic blocks was made stiffer to delay the point where the ratchet engages

B75M 600W Medium Frequency CHIRP Transducer 20° Tilt Single Operation Cable for 1 Transducer Install

Output Short-Circuit

Humminbird XM 14 20 MSI T Mega SI/DI Transom Mount Transducer - 14 Pin Boat E Scow The 399-1M can be strappedXM 14 20 MSI T Mega SI DI Transom Mount Transducer 14 Pin MEGA SI, MEGA DI, DualBeam PLUS, 20 60 86 55 degrees, 200 83 455 800 kHz and 1. 2 MHz, temperature built in. For SOLIX MEGA Side Imaging units only.