Abstract: A transom plate for small fishing boats which simultaneously adjusts vertical displacement and trim of the outboard motor. The transom plate is adapted particularly for smaller fishing boats which must operate under widely varying loads and speeds, and which often encounter extremely shallow water. The plate comprises a rigid transom frame adapted to be clamped to the transom, and a motor bracket slidably movably coupled to the frame. Movement of the motor bracket relative to the transom frame is facilitated by a power cylinder preferably controlled from within the boat. The cylinder is pivotally coupled between the transom frame and the motor bracket, being secured and centered by L-brackets. Special follower slots are defined through each side of the jack to define a path of movement for displacement of the motor bracket relative to the transom frame. A generally vertically oriented slot is paired with a generally inclined follower slot on each side of the plate.