For those who may have a need to know
Eagle fish Mark 320 current draw. Voltage is
power supply meter with a fluke multimeter
in series to measure the current. Transducer is
glued to bottom of canoe not in the water.
Volts      Imin      Imax      Iave
8      84ma      332ma      104ma
9      88ma      372ma      111ma      
10      88ma      456ma      116ma      
11      92ma      476ma      121ma
12      92ma      476ma      131ma
13      96ma      612ma      132ma
14      96ma      448ma      136ma
15      100ma      492ma      141ma
16      100ma      532ma      148ma
17      104ma      560ma      153ma
This unit works well when supplied with 12 to 16 volts.