RedactedNarrative: While on patrol aboard M1, I observed vessel NY9201UW to be hard aground on Spindle Rock. All persons on board claimed no injuries and operator states he did not believe the vessel to be taking on water. Operator further advised he was following a track on his GPS prior to hitting the rock. The vessel was towed to port by Sea Tow and all persons aboard were transported to by NRPD. At this time, damage to the hull of the vessel could not be determined or observed. Vessel was left at its dock and operator advised he would monitor it for water entering the hull but none visible at this time.