The Power Of Hydraulic Hatch Lifting At Your Fingertips! There is no need to manually raise a hatch again. The Bennett Hatch Lifter provides a firm vertical lift to engine or deck hatches at the simple press of a switch. Operation is quiet, smooth, space and cost efficient for opening common hatches normally lifted by hand. Using proven Bennett hydraulic technology, the Hatch Lifter is an easy retrofit for boats already equipped with Bennett Trim Tabs — the Hatch Lifter shares the trim tab Hydraulic Power Unit! Hatch Lifter kits which operate independently of the trim tabs are also available.