Copy the file - tyh.mup

And paste it in the folder - Scenario - in the
dangerous waters installation folder. Below is an example- 
(I Installed my game in the C: drive.)

C:\Program Files\Sonalysts Combat Simulations\Dangerous Waters\Scenario

After pasting, run Dangerous waters and notice 
the mission name in the mission section of the game-

mission name : Operation Liberation.

Click on it and read the mission description 
appearing on the bottom left corner

After reading proceed with the game.
In the game don't forget to click the 'Show Truth' option
or else you won't be able to witness the simulation. Also
listen to the radio messages of the events taking place in 
the simulation.

After completing the tasks just sit back to witness the 
simulation between the Indian and pakistani fleets.