# All-in-One and Most-in-One Mounting Considerations

The All-in-One and Most-in-One configurations have mounting constraints based on visibility of the sensor to the bottom, and the GPS (if referring to the All-in-One) to the sky when surfaced. See the next four figures for examples.

![Side view of an all-in-one DVL mounted on the thruster guard of a BlueROV2 Heavy. The all-in-one DVL can be challenging to mount; the GPS needs to be emergent when the ROV is surfaced; the unit needs to be positioned away from magnetic fields; and the sonar beam cones need to be unobstructed.](https://400583030-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FIUx8F0dEX9C01W3iSbva%2Fuploads%2FBPBRjCeIvvr5Dof49J0T%2Fimage.png?alt=media\&token=5435d934-56d9-439b-b0ae-3935f04e2889)

![Front view of the all-in-one DVL mounted on the thruster guard of a BlueROV2 Heavy. The sonar cones are accurate to scale for the minimum fly altitude of 30 cm from sensor to bottom. The port-side sonar beam clears the side and bottom panel of the ROV housing. See also next figure.](https://400583030-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FIUx8F0dEX9C01W3iSbva%2Fuploads%2FPF2cz0uJnrcYVMGKx2Wz%2Fimage.png?alt=media\&token=12cb1017-a316-4538-81af-7219389f78a8)

![A bottom view of the all-in-one DVL mounted on the thruster guard of a BlueROV2 Heavy, showing the port sonar cone clearing the ROV housing. In real life the sonar beams are not nicely hard-edged like the illustration. You may need to experiment to find the current mounting location.](https://400583030-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FIUx8F0dEX9C01W3iSbva%2Fuploads%2Fl0Mh6n6fOQQV3keYQNlJ%2Fimage.png?alt=media\&token=e6154d88-9e78-4479-b0ce-6ca3fa45415a)

![View looking straight up the port sonar beam. This configuration also shoots through the payload sled, if there is no payload in the beam path.](https://400583030-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FIUx8F0dEX9C01W3iSbva%2Fuploads%2F28EkU0KGlIV24g9JbdS1%2Fimage.png?alt=media\&token=7a56bee3-5aac-4d27-a311-78f741036c43)