# Topside ROV Locator Floatation and Mounting Considerations Whatever system you use to mount the Omnitrack, the following basic operational requirements must be adhered to: * The GNSS compass requires about 160 degrees of unobstructed sky view, so it must operated away from the GPS/GNSS shadow of your boat, wharf, pier, piling, buoy, dock, raft or mountain. If it's on a boat it must be high enough to make sure it is not obstructed by anything on the boat's superstructure. * The ROVL transceiver or receiver needs to be at least 1 meter below the surface, and it must be operated away from the sonar shadow or multipath reflection of of your boat's hull, wharf, pier, piling, buoy, dock, raft or vegetation. If it's on a boat it must be deep enough to make sure it is not obstructed by anything on the boat's underside. * The GNSS compass and ROVL transceiver need to be connected together so they move in the same orientation. The coordinate frames must be rigidly locked. To accommodate the system requirements, the Omnitrack topside elements are designed to be placed on a floating platform away from the boat and/or other topside obstructions to both the sonar system and the GNSS compass. Cerulean Sonar has two complete options for floatation as seen in the following sections, and it is possible for users to provide their own solutions as well. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.ceruleansonar.com/c/omnitrack/topside-rov-locator-floatation-and-mounting-considerations.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.