Transducers and marine electronics are exposed to some of the harshest conditions on a boat. Groundings, submerged objects, trailer damage, or impacts can all cause faults — and in many cases the damage isn’t obvious at first glance.

Faulty Airmar transducer tested with TDT1000

Recently, we carried out diagnostic testing on a transducer after suspected impact damage. Following testing, a detailed damage report was supplied to the customer and their insurance provider, and the claim was approved.

This highlights the importance of proper testing and documentation when insurance is involved.

Visual checks don’t always tell the full story

A transducer may appear undamaged externally but still have internal faults such as:

  • Cracked ceramic elements

  • Water ingress

  • Internal delamination

  • Wiring or strain damage

These issues can result in poor bottom lock, reduced clarity, intermittent readings, or complete signal loss, particularly at speed.

Why testing matters for insurance

Insurance providers typically require confirmation that:

  • The equipment is faulty

  • The damage is consistent with impact or incident

  • The issue is not caused by installation or incorrect setup

Proper diagnostic testing removes uncertainty and provides clear, documented findings that insurers can rely on.

What we do

Testing and assessment may include:

  • Performance verification

  • Signal and output testing

  • Inspection for physical or internal damage

  • Clear written reporting suitable for insurance submission

This helps avoid unnecessary replacements and speeds up the claims process.

If you suspect damage

If you’ve hit something or noticed a sudden change in sounder performance:

  • Don’t assume it’s a settings issue

  • Avoid replacing equipment without testing

  • Have the system assessed as early as possible

Early diagnosis can save time and cost.

East Coast Marine Electronics

East Coast Marine Electronics provides independent testing and fault diagnosis of marine electronics, including transducers. Where required, we can supply insurance-ready documentation to support claims.

We’re based in the Bay of Plenty and offer mobile service.

If you’re unsure about the condition of your electronics or need testing for insurance purposes, get in touch.