The Loneliness of Command.

[Feathered_IV]

Helmsman, bring us directly over the contact.
Sonar, maintain contact with the target. Report the moment the U-boat moves of the echo changes.
Number one, nets and ropes over the side on the double. Make sure those in the water know there is a sub below them and look sharpish.
Engine room, all stop. Be ready to move on my order.
Depth chargers, stand ready.
Signals, alert convoy..