We are Baffled by 'What' was seen Underwater

We are baffled by what has appeared on the stern gear of an inland waterway motor cruiser

From examination it would appear to be a build up of a calcium like substance over 2″ thick in places

When removed there was No Apparent Deterioration / damage to the stainless rudder, skeg, propeller, skin fittings or the anodeAll being unaffected

Equally the build up was Not Organic


If anyone has any bright ideas or has seen this before, we would be very pleased to hear back

For more information contact European Marine Services Ltd.  Marine Surveyors & Consultants 
EMS also undertake Boat Safety Inspections & Engine Inspections

Tel: 01603 327 123