A SYSTEM FOR CONNECTION OF SUBSEA LINES, comprising a first manifold and a second manifold arranged in parallel for fluid import and export, characterized in that: said first manifold comprises a reduced number of components comprising a first header; six fluid import mandrels; six import block! selection valves for the first header; six import block! selection valves for a second header; one first main pipe block valve; one first foundation; two subsea lines (20, 21) for a first flowline; one first line support point; one first subsea installation device; one first interconnection mandrel; wherein the first header, the six fluid import mandrels, the six import block/selection valves for the first header, the six import block/selection valves for the second header, the one first main pipe block valve,the two subsea lines for the first flowline, the one first line support point,the one first subsea installation device, and the one first interconnection mandrel are positioned on the one first foundation; said second manifold comprises the second header; one second main pipe block valve; one import block! selection valve; two subsea lines (22, 23) for a second flowline; one second foundation; one second interconnection mandrel; one second line support point; and one second subsea installation device; wherein the second header, the one second main pipe block valve, the one import block/selection valve, the two subsea lines for the second flowline,the one second interconnection mandrel,the one second line support point and the one second subsea installation device are positioned on the one second foundation; the system further comprises a connection element for interconnecting the first interconnection mandrel with the second interconnection mandrel; wherein the first header,the six fluid import mandrels, the six import block/selection valves for the first header, the six import block/selection valves for the second header, the one first main pipe block valve, the two subsea lines for the first flowline, and the one first interconnection mandrel of the first manifold are interconnected according to their functions in the first manifold; and wherein the second header, the one second main pipe block valve, the one import block/selection valve, the two subsea lines for the second flowline, and the one second interconnection mandrel of the second manifold are interconnected according to their functions in the second manifold. said first manifold comprises a reduced number of components comprising a first header; six fluid import mandrels; six import block! selection valves for the first header; six import block! selection valves for a second header; one first main pipe block valve; one first foundation; two subsea lines (20, 21) for a first flowline; one first line support point; one first subsea installation device; one first interconnection mandrel; wherein the first header, the six fluid import mandrels, the six import block/selection valves for the first header, the six import block/selection valves for the second header, the one first main pipe block valve,the two subsea lines for the first flowline, the one first line support point,the one first subsea installation device, and the one first interconnection mandrel are positioned on the one first foundation; said second manifold comprises the second header; one second main pipe block valve; one import block! selection valve; two subsea lines (22, 23) for a second flowline; one second foundation; one second interconnection mandrel; one second line support point; and one second subsea installation device; wherein the second header, the one second main pipe block valve, the one import block/selection valve, the two subsea lines for the second flowline,the one second interconnection mandrel,the one second line support point and the one second subsea installation device are positioned on the one second foundation; the system further comprises a connection element for interconnecting the first interconnection mandrel with the second interconnection mandrel; wherein the first header,the six fluid import mandrels, the six import block/selection valves for the first header, the six import block/selection valves for the second header, the one first main pipe block valve, the two subsea lines for the first flowline, and the one first interconnection mandrel of the first manifold are interconnected according to their functions in the first manifold; and wherein the second header, the one second main pipe block valve, the one import block/selection valve, the two subsea lines for the second flowline, and the one second interconnection mandrel of the second manifold are interconnected according to their functions in the second manifold.