RedactedNarrative: On aug 4th while leaving the north shore marina to tournament fish, the vessel sea flame struck a submerged rock at the entrance to the marina. After speaking with the captain and owner it is my conclusion that thick fog reduced visibility to the point that the captian lost his bearing and passed to close to the east rock wall leaving the marina. The vessel was making way at a slow no wake speed due to no wake area and weather conditions. The vessel struck the rock with a wheel, resulting in the wheel being destroyed. The sea flame returned to the dock and had a diver from prop divers assess the damage. It was determined that the vessel needed to be pulled. Due to weight restrictions on the lift at north shore the vessel was taken to cape may new jersey to be repaired. Conclusion of the investigation showed no negligence or carelessness of the operator.