A variant of the grappler harpoon that drains the target of energy and transferring it to the firing ship as long as they are connected by the super-conducting harpoon cable.
This power transfer reduced the Rate of fire of energy weapons on the target ship and increases them on the firing ship.
Note: this weapon can be stopped by moving out of range (difficult due to energy drain and that you are attached like the grappler Harpoon before) or restoring level 1 or higher shields (cutting the cables)