Thank you for your question, my name is ***** ***** I will be glad to assist you with your concern today.
Which model transducer are you using?
Where exactly on the hull is it mounted?
In regards ***** ***** above that info will help yes, however I can also provide an answer to you as the most common cause of this problem because of the very specific symptom (no data while under way) this problem is usually due to "air" this can be anything forward or close enough to the transducer to put air/bubbles around it and cause incorrect/incomplete/missing data. This can include water intakes, anything that mounts to/through the hull, hull design including a stepped hull and or too close the the chines, to close to motor gear/drives etc.
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