Vodka overboard

The scientific ship is in the sea for three months. The crew starts drinking hard. The captain decided to stop it and gathers the crew onboard.
- Because of frequent accidents of deep drinking I command to throw all the bottles of vodka overboard.
Deadly silence. Someone from the back:
- Sure. The captain is right. Let's throw all the vodka overboard!
The rest of the crew angrily:
- Shut up, diver!