We are pleased to show the hydraulic lift for the dock in case you need to operate in this way for your floatplane.The actuators are in the water.It works on 12 Volts solar panel charged battery, which lifts the aircraft hydraulically right out .. and back down in the water. This complete and professional dock was not produced by us (as even the assembling of the floats) and if you need more informations you could contact us or directly our Canadian dealers.A very nice product.. Something that could make the difference.