A sealed 200kg container of dangerous chemicals has washed ashore near Stilbaai on the South Cape coastline, and another three containers may still be adrift, the National Sea Rescue Institute reported on Friday.The NSRI warned people to stay away from the beached container, or from any others should they encounter them along the coast. The beached container, though not a “present risk” to the environment, is due to be recovered by a Hazardous Materials Fire and Rescue team later on Saturday, the NSRI said.Though there is currently no confirmation of missing chemical cargo in the…