Coastwatch · Beach Survey

Simulation speed 1×Move objects on mapAltitude 8 mSurvey speed (m/s)

Environment & inspection

Wind 2 m/sSun elevation 45°Wet-sand glare 25%Burial 20%Automatic second passInspection speed (m/s) Descent (m/s) Ascent (m/s)

Survey → uncertain tracks → descend → 8-second hover

Loading 3D scene…

Isometric drone view · camera footprint

Drone camera · downward RGB

Ground truth · placement map

▦ cage: crab trap · circles/squares: litter · triangle: drone

Drone knowledge · surveyed land

Shaded: observed · blank: unknown · line: flown path
Circle: candidate · square: confirmed · triangle: drone

0% observed · 0 detections

Selected track

Select an object track or a detected map marker.

Confidence history · camera observations only

▦ Crab trap tracks · fishing gear

No crab traps identified

Crab traps are recorded separately from general litter. Detection does not establish whether a trap is abandoned or actively used.

Trap / class	State	Confidence*	E / N (m)	Uncertainty (m)	Sightings
No crab trap sightings

Litter & unclassified tracks · simulated estimates

Track / class	State	Confidence*	E / N (m)	Uncertainty (m)	Sightings
No sightings

10 crab traps + 20 litter objects: bottles, cans, bags, tires, foam boxes. *Heuristic confidence, not calibrated AI. Size in a simulated 1080p image, view angle, speed and burial affect detections. Three sightings and ≥60% confidence confirm a track. Coverage measures the full 112 × 80 m beach in 2 m cells. Observed ground does not mean all litter was detected.