Drag to orbit; scroll to zoom. Use vessel, overview, deep-sea ROV and plan modes. Manage speed, payout and currents to keep tension below 40 kN. Deploy the ROV to the diagnosed fault site, navigate with WASD / QE, then initiate splice repair.
Assets are original procedural meshes. Depths, tension, time dilation, catenary and repair processes are simplified engineering models, not certified maritime control software.