Abstract: A tanker hatch system for permitting remote opening and closing of a hatch opening in a tank. The tanker hatch system includes a collar wall for mounting on an upper wall of a tank and extending about an opening in the upper wall for defining a channel into an interior of the tank. The channel includes an axis. A cover slidably mounted on the collar wall is provided for selectively closing the channel. The cover is movable in a plane oriented generally perpendicular to the axis of the channel. The cover includes a closed position wherein the cover closes the channel in the collar wall and an open position wherein the channel in the collar wall is substantially unobstructed by the cover. A moving mechanism is provided for moving the cover between the closed and open positions.