Most countries have legislation in place to protect underwater heritage against disruption by for instance dredging, construction and mooring of ships. We provide desk research and geophysics to search the sea bed for sites with archaeological value that under threat of disruption. This way we prevent late stage discovery of (potential) heritage sites and thus intervention with the inevitable delays as a result. If geophysics identify sites that may cause for rerouting the cable we can provide an archaeologist and ROV system to inspect the sites and make a firm assessment of the heritage status.