Robot patrols for ports?

Imagine robots that patrol beneath port waters, able not just to notice and then identify security threats, but also able to keep tabs on water pollution, silting up of vulnerable areas and inspect the integrity of underwater assets.

BMT's AUV being put through its paces at the Port of Lisbon

Imagine robots that patrol beneath port waters, able not just to notice and then identify security threats, but also able to keep tabs on water pollution, silting up of vulnerable areas and inspect the integrity of underwater assets.