Un capitán de quince años

José Manuel Marcos

as Dick Sand

Edmund Purdom

as Admiral Marlowe

Marc Cassot

as Captain Hull

Doris Thomas

as Clara Marlowe

Howard Vernon

as Korda

Armand Mestral

as Harris

William Berger

as Negoro

Fernando Bilbao

as Hercules

Sergio Mendizábal

as Benedict

Luis Barboo

as Sailor

Alberto Dalbés

as Vargas

Marisol Delgado

as Clara's maid

Gonzalo Cañas

as Bat

Perrette Pradier

as Clara Marlowe (voice) (uncredited)