Detecting submarines in a MH60

[GiantBunnyRabbit]

Hello,

I'm new to the game and I decided to start with the MH60. I chose the 'MH60 Demo' mission where I have to sink the Victor before it crosses the goal line. My 'tactic' was to patrol the area around the buoys and wait until the Victor shows up on the buoys. After I flew around for about one hour I wanted to know what happened and activated 'Show truth'. The Victor was moving in the opposite direction with about 5kts.

Is there another way to detect a submarine or do I have to fly around and drop buoys until I get a contact? I don't think I would have found him, because I was hanging around near my mission objective, where the Victor didn't want to go.

Thanks for help