This navigation display shows almost all of the information Sentry engineers need to know that the vehicle is completing its survey properly. The green line shows the programmed track for the survey -- here, long, continuous paths mean Sentry was collecting mapping data while the snake-like box path lines mean the Sentry was taking photos. Completed tracks are shown in red. The Sentry, represented in yellow, can be seen midway through its mapping survey, with the ship, in white, just ahead of it.

This navigation display shows almost all of the information Sentry engineers need to know that the vehicle is completing its survey properly. The green line shows the programmed track for the survey—here, long, continuous paths mean Sentry was collecting mapping data while the snake-like box path lines mean the Sentry was taking photos. Completed tracks are shown in red. The Sentry, represented in yellow, can be seen midway through its mapping survey, with the ship, in white, just ahead of it. Image courtesy of AUV Sentry, Woods Hole Oceanographic Institution.

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