Captain, sharp metallic transients. He may be trying to open his torpedo tube doors.
4 seconds sound clip from the The Hunt for Red October movie soundboard.
You can hear this line at 01:34:58.832 in the Blu-ray version of the movie.
Quote context
[...]
- Mr. Thompson, open the outer doors. Firing point procedures.
- Now, if that bastard so much as twitches, I'm going to blow him right to Mars.
- All stop, rudder amidship, aye.
- What's going on? Can you identify the contact?
- American Los Angeles class attack submarine, bearing 0-1-5...
- Captain, sharp metallic transients. He may be trying to open his torpedo tube doors.
- Outer doors are open on tubes one and two. We're ready to shoot.
- My orders are specific, Mr. Ryan.
- Captain, he has opened his outer doors and is preparing to fire.
- Flood tubes three and four and plot a solution.
[...]