1.   South Korean patrol boats rammed North Korean vessels on Friday, trying to drive them north and leading to a sharp escalation of tensions.

2.   South Korean patrol boats rammed at least three North Korean vessels Friday, raising tensions in the five-day standoff in the Yellow Sea.

3.   Witnesses said that Cuban Government boats rammed the hijacked boat to stop it from going to Florida.

4.   At one point, the patrol boat rammed the hijacked vessel, which was able to escape despite substantial damage.

5.   He said there was no doubt that the explosion came from the small boat but it was not clear whether the boat rammed the ship.

6.   He said there was no doubt the explosion came from the small boat but it was not clear whether the boat rammed the ship.

7.   Last Friday, South Korean navy patrol boats rammed and briefly repelled North Korean warships, but there has been no exchange of fire between the two sides.

8.   On Friday, South Korean navy patrol boats rammed and briefly repelled North Korean warships, but there has been no exchange of fire between the two sides.

9.   On Friday, South Korean navy patrol boats rammed and briefly repelled North Korean warships, but there has been no exchange of fire.

10.   Suddenly, the boat rammed into a bridge.