[coward76]

I imagine a future with smugglers and pirates which only move during the day and generate enough smoke and water vapor during scheduled flyover to hide their journey

[tankenmate]

Synthetic Aperture Radar (SAR) can see right through vapour and smoke.

[coward76]

I have revised my vision to remove the ineffective cloud and it now includes a cruise ship fiberglass "kitcar" shell instead.

[aerostable_slug]

Your wake will get you. They are titanic signatures.

Fun fact: a significant part of the Lockheed Sea Shadow program was wake suppression.

[mhh__]

I'm guessing following an enormous plume of smoke might not be a challenge.

[1_person]

or maybe they already use narco subs to avoid detection