RedactedNarrative: At approx. 1100hrs operator of vessel 1 stated she was sailing in the vicinity of Middle Ground Reef, Northeast of Emerald Rock buoy, when she felt he vessel strike something twice beneath the surface. Operator stated after the impact she was unable to maneuver her vessel because the tiller was disabled. She also noticed a slow but steady flow of water coming in from the deck at the stern. Operator states without the use of her vessels tiller she continued east under sail but after several minutes without being able to maneuver she dropped the sail on her vessel and drifted east for approx. 40 minutes. After drifting for several minutes one of the passengers aboard called for help via cell phone. V1 was located by Mamaroneck PD and New Rochelle PD Marine Units one hundred yards east of Green buoy at Execution Light. All passengers aboard V1 were removed safely without incident. Vessel 1 sunk due to excessive amount of water in the hull while port sailing school employees attempted to salvage it.