High Quality Content by WIKIPEDIA articles! The Martin B-33 was designed by the Glenn L. Martin Company as the Martin Model 190 and was a high-altitude derivative of the company`s B-26 Marauder. Two different designs were developed, first as a twin-engined aircraft and then as a four-engined aircraft. The four-engined version was ordered by the United States Army Air Forces but the program was cancelled before any aircraft were built.