Abstract: A subsea system for oil or gas production and water injection operates without divers' assistance and with guide-cables and includes a template (50) equipped with ten drilling mouths (53) arranged in two rows of five. Each drill mouth (53) has a guidepipe (54). The upper extremity of the guide-pipe presents an external section for locking purposes. A guide-base (55) is provided with four posts (56) removable by a ROV. A central space is provided in the template for the setting of a manifold (60) through four posts (63) to guide the installation and devices which ensure the final positioning of the manifold (6) within established tolerances. Bases of export-line terminals (64) are located in one of the extremities of the template (50) Each base (64) is provided with two guide-posts removable by a ROV, in addition to reaction posts (66) which orient the lowering of the pulling and connection tools and transfer the stresses to the structure of the template. Receptacles (67) lock the export-line terminals.