 The fourth and last of the George A. Hirliman-produced films starring George O Brien (preceded by "Daniel Boone", "Park Avenue Logger" and "Hollywood Cowboy") that were distributed by RKO Radio. Hirliman sold O Brien s contract to RKO, which then produced 18 series westerns starring O Brien that ended when O Brien went into the Navy at the outbreak of WW II. Long-time (past and future) O Brien director David Howard served as Hirliman s Associate Producer on this film. "Windjammer" finds O Brien as a subpoena server ordered to serve a subpoena on Brandon Evans (The Commondore) for a senate inquiry or lose his job. Posing as a playboy, he boards the Commodore s yacht during a yacht race, and the yacht is wrecked by a gun-running windjammer commanded by Captain Morgan (William Hall.) All hands are picked up by the windjammer, including the Commodore s daughter (played by Constance Worth, at her blonde, plumpish best) and put to work as galley slaves and such, but it isn t long before O Brien starts knocking heads, and making the gun-runners wish they had left him swimming.