Abstract: Apparatus for inspecting a submerged object and methods of use are provided, wherein a crawler vehicle includes a vortex generator, traction system and sensor system. Data from the sensor system is communicated to an onboard console for real-time review or transmission via a communication link to a remote site for analysis and review. Automated comparisons of current inspection data against normative or historical data may be performed, so in depth review of the current inspection is triggered only when the difference between current inspection data and the normative or historical data exceeds a predetermined threshold. Additionally, an adapter is provided having a vortex generator and a traction system, the adapter configured to be coupled to an ROV or other device having a sensor system.