5With the tremendous success of RED TRUCK in board book format and anticipation around YELLOW COPTER in board to match, we're thrilled to complete the primary-colored series about vehicles who save the day by bringing BLUE BOAT into board, too! When a family on a sailing outing gets stuck in a surprise storm, there is only one boat tough enough to handle the rocking waves and howling winds: Blue Boat! Now even the youngest readers can cheer on this "rough, tough tugboat."