Abstract: A simplified anchor chain tensioner includes a base bracket, and a multiple function U-shaped lever pivotally mounted to the base bracket. The anchor chain hook is pivotally mounted by threaded engagement to a pivot pin mounted through the two lever arms of the U-shaped lever. The front ends of the lever arms are resiliently movable toward and away from one another, with the end of one lever arm being notched to resiliently latch and hold down the anchor hook arm; while the end of the other lever arm is jogged to provide a surface for locking engagement with the base bracket and a second surface for the application of manual compression force to release the latching and/or locking action.