The boat storage container unit is adapted to be supported on a boat. The boat storage container unit has a support unit and a container sized and shaped to store fishing tackle, tools and the like and adapted to slide onto the support unit. The support unit has a vertical support member, an attachment device for attaching the vertical support member to a boat, a base and a connection device at one end of the base to pivotally connect the base to the vertical support member. The connection device is adapted to permit the base to be moveable from a vertical position to a retainable horizontal position. A top surface of the base and a bottom surface of the container have inter-engaging means to permit the container to slide onto and be retainer on the base.