11.   That impressive array of weaponry makes the Cole almost impregnable to attack by enemy ships.

12.   The game involved piloting a space ship to blast enemy ships that constantly fly toward it.

13.   The lower position made it easier to plant an explosive charge below the waterline of an enemy ship.

14.   The ohka was essentially a glider, carried underneath a bomber and released near enemy ships.

15.   The Russian navy is to sell off dolphins who were specially trained to blow up enemy ships as part of the rundown of its armed forces.

16.   This close up of space battles allows the captain to aim at specific systems on enemy ships like engines and shields.

17.   You blow up some enemy ships.

18.   Additionally, there likely was a reluctance by Navy officials in Portland to acknowledge that an enemy ship struck in their territory, said Lawton.

19.   Almost all the missions took only five minutes to complete, each accomplished easily due to the weak enemy ships.

20.   Extensive efforts reportedly were made during the Soviet era to train whales and dolphins for military purposes, including attacking enemy ships with bombs strapped to the creatures.