Planet imagery can detect vessels as small as approximately 10 meters in length (around 3 pixels in PlanetScope imagery). However, detection accuracy at this size can vary significantly depending on image quality and environmental conditions.

Factors that may affect detection accuracy include:

• Cloud cover
• Sea state and wave patterns
• Atmospheric conditions
• Image resolution
• Vessel contrast against surrounding water

Small islands, waves, clouds, and other visual artifacts may occasionally be misidentified as vessels, especially in rough sea conditions.

In general:

• Vessels between 10–30 meters may be detectable with varying accuracy
• Vessels larger than 50 meters are more reliably detected
• Larger vessels typically produce more accurate and consistent detection results