The engines are off.
2 seconds sound clip from the When Worlds Collide (1951) movie soundboard.
You can hear this line at 01:14:46.104 in the Blu-ray version of the movie.
Quote context
[...]
- Hold the gangplank! Dr. Hendron! Hold the ramp! Wait!
- We're the extra fuel they might need. The new world isn't for us. It's for the young.
- Dave! The ship is moving! Stand by!
- We're out of the pressure zone.
- You invented those cardiographs for my benefit.
- A quarter full. Better than we expected.
- We'll need every bit of it. Or we'll hit the new world head-on at ten miles a second.
- In a minute or two, we'll feel the pull.
[...]