[gotribe]

Would one of FR's military experts explain please tell me how a helicopter can sink a submarine?

[SandRat]

Drop and dip sonar buoys. Then there are specialized torpedoes that the choppers carry and drop in the water when they have a contact. They are also usually backed up by surface ships that are also listening to the sonar pings and acoustic sounds that can toss more stuff to where the enemy pig-boat is.

[puppypusher]

Drop Sonar Buoys in the water or cable tethered sonar dome and drop a Mark 48 torpedo and watch it go to work. I have a feeling something is up other than the "War on Terror". Time will tell.

Only Iran has a size-able submarine force that the U.S. navy has to worry about although they have a lot of anti-ship mines that those Helos can also deal with.

[Rudder]

Would one of FR's military experts explain please tell me how a helicopter can sink a submarine?

Well, they stop and fold upward those great big flapping blades and then hurl into the water not unlike a big cannonballer. This usually convinces the sub's crew to surface.