Is silt imperative?

No, because that is a phrase, and not a sentence.

Imperative languages focus on how the program should follow it's tasks, while non-imperative languages, functional or logical, tell the program what it needs to do, as opposed on how to do it.

The hypothetical imperative is a test used to determine whether or not you will do an action. You must imagine a world in which everyone does the proposed action. If it is not possible the action...

The process is called dredging, and is done with with cranes and large pumps.