Navigation Workflows

Concepts

Greensea subsurface navigation relies on the DVL to track the ROV's relative motion across the bottom and the compass to resolve this relative motion into an actual bearing and allow geolocation. In order to know its true position, the starting point must be seeded with GPS coordinates. The ROV GPS antenna accessory can be used to do this, or if known, the coordinated can be manually entered. If the ROV mission does not require geolocation, the seeded GPS value does not matter and the DVL / Compass will allow for relative tracking without any further interaction.

This allows several methods of navigation:

• Visual / Sonar Relative (no geolocation, but distances and bearings can be mapped)
• Marker Reference
• Chart Overlay