Tank container can be loaded and unloaded from the top and the bottom. on standard tank container there is manhole and at least one valve on the top, and there is valve at the bottom.Design and development. the smk was among the designs competing to replace the unreliable and expensive t mulurreted heavy tank. design team under josef kotin at the kirovski works (formerly the putilov works) at ingrad designed the tank. Everything looks better in the realworld right? of course it does. use these photoshop mockup templates to make your design look like it has been printed on real tshirt, beanie, sticker, billboard, hoodie, ipad, iphone, notebook, tank top, polo, al cover, cd, poster, etc.