All weather lifeboat launched at 2356 to the 30ft Yacht from previous day, reported to be in difficulty again, this time with two persons on board. Craft reported to be in same position, but upon arrival on scene, no signs of craft and only comms by mobile phone, further info gleaned stated, that the craft may be off Sheerness seafront. Casualty located at 0030, at anchor close the Sheerness Outfall buoy, UKCG concerned for the safety of occupants, the craft was taken under tow and secured in Queenborough Harbour, where the lifeboat was met by Sheppey CRT. ALB returned to station at 0135 and ready for service at 0150. SW 4. (Owner had returned to craft in evening and pumped craft out and attempting to sail back to Gillingham).