Is the sidescan of the transduce of this unit half and half? means front half for port side(so not blocked by engine), rear half for starboard side?

No, port and starboard out as far as you set. Depending on depth of water, distance can be 20 to several hundred feet port or starboard

Transducer cable length

I didn't measure it but it should be 25 feet long. On my 18' boat the cable reaches from the bow all the way back to the stern transom mount location with some extra length. The installation manual states "If your transducer cable is not long enough to reach the chartplotter, you can add an extension cable (Garmin part number 010-11617-42 or 010-11617-32, not included). To avoid signal degradation, do not extend the cable more than 9 m (30ft.).

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🎯 Lock in the catch with Ultra HD precision and power!

VERSATILE MOUNTING OPTIONS - Install easily on your transom or trolling motor for flexible setup tailored to your boat and fishing style.
TRIPLE FREQUENCY POWERHOUSE - Seamlessly switch between 455, 800, and 1000 kHz frequencies powered by 500 watts to dominate all depths and conditions.
HIGH WIDE CHIRP TRADITIONAL SONAR - Get razor-sharp target separation and definition up to 800 feet below your boat, ensuring no catch goes unnoticed.
SEE 20 FURTHER WITH ULTRA HD SIDE VU - Experience unmatched underwater clarity and extended range at 1000 kHz for spotting fish and structures before anyone else.
VIVID COLOR PALETTES FOR INSTANT CLARITY - Distinguish fish from structure effortlessly with vibrant sonar colors that bring underwater details to life.

The Garmin Sonde gt56uhd-tm is a cutting-edge sonar transmitter delivering ultra-high-definition SideVü and ClearVü scanning sonar with 20% greater range at 1000 kHz. Featuring three sonar frequencies (455, 800, 1000 kHz) powered by 500 watts, it provides vivid color palettes and exceptional target separation up to 800 feet deep. Easy to install on transom or trolling motor, it’s designed for anglers who demand crystal-clear underwater imaging and versatile performance.

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Department	Unisex
Manufacturer	Garmin
Item model number	010-13073-00
Product Dimensions	32.77 x 14.22 x 11.18 cm; 1.36 kg
ASIN	B08LF4JDSJ
Guaranteed software updates until	unknown

Garmin Sonde gt56uhd-tm

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