Here is a look at the 16-inch turrets on a battleship

The three-gun turrets on an Iowa-class battleship are perhaps some of the best-known (and most-loved) naval guns. When they are fired, there is a sense of immense power — and they have a reputation for being able to take out just about anything.

It's a well-deserved reputation. During Operation Desert Storm, a bunch of Iraqi troops saw the RQ-2 Pioneer unmanned aerial vehicle circling overhead. Knowing that a lot of powerful shells were going to come soon, the Iraqis decided not to wait to get hit and surrendered to the drone.

So, how do these three-gun turrets work?

Now, this is a key distinction to keep in mind. A triple turret raises and lowers all three guns at the same time. A three-gun turret can raise and lower each of the guns separately. Don't call 'em a triple turret — that could end up getting you in almost as much trouble as getting on the clip/magazine thing wrong.

The Iowa-class battleships have served off and on since World War II. Two of them, USS Missouri (BB 63) and USS Wisconsin (BB 64) saw action during Operation Desert Storm. All four were reactivated in the 1980s and equipped with BGM-109 Tomahawk cruise missiles, RGM-84 Harpoon anti-ship missiles, and Mk 15 Phalanx Close-In Weapon Systems.

The Iowa-class fast battleships (they had a top speed of 35 knots) displaced 45,000 tons, and their main armament was nine 16-inch guns in three three-gun turrets. When built, they had twenty five-inch guns in ten two-gun turrets. Six were ordered, but only four were commissioned. Two ships, USS Illinois (BB 65) and USS Kentucky (BB 66) were scrapped after World War II.

Take a look at this 1955 training film about the big guns on the Iowa-class battleships. Then think about how they no longer sail the seas, and mourn.