RedactedNarrative: Operator stated he was travelling at approximately 35 mph in 27 feet of water when he struck a submerged object.  The object would latter be determined to be a hard plastic pipeline being used in a lake cleanup project.  The vessel sustained significant damage and both individuals onboard suffered minor injuries.  The warning buoys and markers for the pipeline were found to have been cut and a portion had floated off site.  As a result a approximately 200 foot section was unmarked where the vessel hit the pipeline.