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Sailboat InsuranceAustralia · Independent guide

Shore Power Surge and Electrical Damage Claims

Shore Power Surge and Electrical Damage Claims. Covers power surges versus electrical failure and evidence of a shore power surge.

By Gabriel2 min readUpdated Last reviewed

Claims

Power surges versus electrical failure

TypeWhat happensUsual treatment
Surge or spikeChargers, inverters, electronics destroyed at onceSudden accidental damage, generally arguable as covered
Reversed polarity or lost neutralEquipment damage and a genuine shock hazardSudden; the dock's fault may be recoverable
Stray current corrosionAnodes, shafts, props and saildrive legs eaten over weeksGradual; usually excluded as corrosion
Galvanic corrosion via the earth conductorUnderwater metal wastes awayGradual and generally excluded
Fire from a failed connectorBurnt inlet, cable or distribution panelFire cover responds; cause investigation follows

Evidence of a shore power surge

  • Multiple unrelated devices failing at the same moment, which is the signature of a surge.
  • Marina records or other berth-holders reporting the same event on the same night.
  • Physical evidence at the inlet, the lead or the distribution panel — scorching, melted insulation, discoloured pins.
  • A marine electrician's report attributing the damage to an external supply fault rather than to a vessel fault.
  • Any switchboard or pedestal fault record from the marina operator.

Marina installation liability

Where the fault was in the marina's supply, there may be a recovery against the marina operator, and your insurer will usually pursue that rather than leaving it to you. Report the incident to the marina in writing the same day, ask them to record and preserve the fault, and give your insurer their response. Berth licences frequently try to exclude the operator's liability, which is a matter for the insurer's recovery team rather than something to negotiate yourself.

Electrical protection and maintenance

  1. Fit a galvanic isolator or an isolation transformer, and keep the invoice.
  2. Inspect the shore lead and inlet regularly; discoloured or pitted pins mean replace, not clean.
  3. Check anodes far more often than you think necessary if the boat lives on shore power, and photograph them.
  4. Unplug when the boat is unattended for long periods and there is no need for the connection.
  5. Record the marina, the pedestal number and the date range the boat has been connected.

Read the wording before you need it

Almost every disputed marine claim turns on a definition, an exclusion or a condition the owner had never read. The PDS guide explains which sections decide claims.

Read the PDS guide
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