Visible crew/equipment: As Ryback approaches the cake which Jordan Tate is hiding inside, a wire used to pull the cake away can be seen attached to the bottom of the cake. (00:41:25)
Visible crew/equipment: When the bad guys enter the galley when searching for Cates and Ziggs, after they yell "clear" a boom mic is visible in the top left of screen. (00:46:10)
Visible crew/equipment: Near the end of the film the prisoners are released. When the door opens water comes gushing out followed by 3 prisoners. You can see the water slide that the prisoners have slid down.
Visible crew/equipment: After the lady in the cake bit they leave the room and close the door behind them. When the door closes there is a shadow of the cameraman on it.
Visible crew/equipment: As Stranix follows Cmdr. Krill out of the hatchway, he looks around. As he does, the camera crew and boom mike man are reflected in his shades.
Visible crew/equipment: Jordan arrives at the ship and Billy tells her "you can do this gig with your eyes closed." The whole crew is reflected on his sunglasses.
Answer: The smaller guns were only equipped with the Starburst rounds. The 16 Inch Cannons were still supplied with live ammo. None of the characters left to fight had experience with the 16 inch guns except for the Gunner's Mate, therefore none of them thought to use one of the 16 inch guns.
dablues7