Featured in the documentary are the aircraft carrier USS Saratoga (CV/CVA/CVB-60), the destroyer USS Bigelow (DD 942), the Netherlands Navy submarine Tonijn (S-805), and submarines of the French Escadrille des sous marins de l'Atlantique (ESMAT), stationed in the Tagus river in preparation of NATO's largest yearly military exercise "Locked Gate", 1975.
The movie's theatrical premiere on the matinee of June 19, 1976, was at Cinema Universal (175 Rua da Beneficência, Lisbon), with capacity for 538 spectators, and stayed on for 3 weeks. The theater, known for left-oriented programs, closed down in October 1977, only to re-open with name change as a night-club, Rock Rendez.Vous, in December 1980.
The movie's TV premiere on the evening of Sunday, July 6, 1975, was immediately followed by the live broadcast of a debate, named Teleforum, moderated by José Carlos Megre, a catholic militant responsible for the Political and Social Programs of RTP, also a member of MES (Socialist Left Movement), and featuring:
- Comandante Jorge Correia Jesuíno, the Minister of the Social Communication;
- Vasco Pinto Leite, Director-General of Popular Culture and Eentertainment;
- Eduardo Prado Coelho Director-General of Cultural Action, also member of the Communist Party;
- Sophia de Mello Breyner Andresen a catholic poet and writer;
- António Reis co-founder of the Socialist Party, also member of the MFA (Armed Forces Movement);
- Maria Alzira Seixo university teacher and researcher on Romanic Literature;
- Bento Domingues cleric friar of the Order of Preachers;
- João Bénard da Costa catholic militant and teacher of Cinema History at the National School of Cinema.