All weather lifeboat launched at 0920 to a small motor cruiser which had broken down and drifted under berth 10, Sheerness Docks, there were 3 persons on board. Having quickly arrived on scene, the lifeboat passed a line and towed the craft clear of the danger and into clear water, the craft had sustained some minor damage, but had maintained its watertight integrity, all 3 persons on board were reported to be okay. The casualty craft was towed to Queenborough ATL and met by Sheppey CRT. The lifeboat returned to station at 1007. NW 5.