RedactedNarrative: The Panamanian-registered tanker CHEM VENUS was outbound on the Piscataqua River on a flood tide
  when, after it took the port turn around Henderson Point, it struck several recreational sailboats moored
  outside the channel that were on the tanker's starboard side in the vicinity of the Kittery Point Yacht Club.
  The tanker then proceeded to strike ledge which resulted in a grounding. Following notification to the
  Coast Guard of the incident, the tanker was ordered to a nearby anchorage to conduct a damage survey
  and await Coast Guard investigators and inspectors. The tanker damage survey revealed that a ten foot
  by three foot area of the keel showed some buckling with multiple cracks and scraping. The damaged
  area began aft of the after turn of the bulbous bow and ended ten feet forward of the bow thruster. The
  bow thruster was not damaged. The vessel was allowed by it's flag state to depart from the anchorage to
  the United Kingdom to offload cargo. Of the four sailing vessels reportedly struck, one was demasted.