So when are these navigation lights are used? When docking / berlabuh?

Have you watched Hunter Killer submarine movie? 

If yes, what do you think of the movie as a submariner yourself?

Any similarities with actual submarine situation you might have experienced?
For example; when the USS Arkansas was diving steeply, you can see the crews standing senget.

Yah! 
Senget weiii... I wonder if LTZ have experienced this. 

Mesti bai..... nk tunjuk tp x de dlm rekod plak video or pic dia

We cant simply post any sub interior scene for public....especially in ops room

Similar with outside.... cook creativity for crews moral

Of course... inside our own coffin