RedactedNarrative: Unit 2 was broken down while at anchor.  Unit 1 attempted to tow Unit 2 to Pack's Landing.  Once the tow rope was tightened, Unit 2 pulled up their anchors and began to drift down stream with Unit 1.
  
  As Unit 1 began to make a left hand turn into Watson Ditch with the towed vessel, it became apparent Unit 1 was not capable of towing the much larger Unit 2.  The weight of Unit 2 and the strong current of this portion of this Santee River portion of Lake Marion during this turning maneuver pulled the transom of Unit 1 underwater causing immediate swamping.  As Unit 1 sank, Unit 2 became lodged on a log jam at the train trestle and was able to pull the operator of Unit 1 from the water.  Unit 2 was towed to Packs Landing by SCDNR while Unit 1 remains at the bottom of the lake.