Just like pointed out to you above by JapLance, you need to click on that ">* 5: Node NSS_Salmon" to select it, then click on the blue text "Model Preview", which is a link to the 3D image. You could then select the "4: Node..." that should be below the "5: Node...", and find the "Export 3D model" link for use in a 3D program. You may or may not have to select more nodes to export different "parts" of the 3D model...
Now, for most of the submarines, you will find the sail, or conning tower, or turm (pick your term... sorry, bad joke won't happen again
until the next time) - but you'll find all of those in the Objects folder. Also, be sure and browse through the "Library" folder for guns and other paraphernalia used in the game...
