When a ship is out in the deep ocean, how do they stay stationary without an anchor?

Question

RE: Titanic dives, there’s no way there’s an anchor that long, so how does the ship stay in place over the wreckage without drifting with the current?

In: 51

Answer 1

They won’t stay stationary unless using a “new” technology called Dynamic Positioning.
Dynamic Positioning is a computer-controlled system that automatically maintains a ship’s position by using its own propellers and thrusters.
It works by taking input data from the vessel’s position reference sensors, wind sensors, gyrocompasses, and motion sensors.