The South Pars gas field is located in the Persian Gulf at 100 km off Iranian Southern Coast，water depth of 60 m to 80 m. The offshore portion of South Pars gas field phase19  is consist of four offshore platform complexes, including two main Production platforms (SPD19A &SPD19C) and two satellite platforms(SPD 19B & SPD2). The Submarine Cable will connect the Production Platforms SPD19A & SPD19C with the Satellite Platforms SPD19B & SPD2 respectively, so there are two subsea cables need to laid and buried between these platforms. In December 2016，OTAP have invloved in the trenching work before the cable installation.