RedactedNarrative: The operator of vessel I was traveling in a westerly direction around the south tip of Black Cat Island in rainy and unfavorable conditions. He did not see the black top buoy marking rocks in the area and struck them with the vessel's lower unit. The damage was disabling and the occupants called the company they rented the boat from for a tow.  The damage to the vessel totaled $2,438.00. There were no injuries.