Looking for the name of the down periscope texture
 

When the periscope is down, there's a texture placed in front of the eyepiece, blocking the view.

However, using a larger DPI display, the texture doesn't cover the whole periscope, leaving the rest of the boat quite visible along the sides.

Anyone know what the name of the texture is so I can get it fixed? I've looked through the files but nothing seems to quite be the right one. shadows.tga/.dda isn't it.

Any ideas?