This has been added on www.shipsim.com FAQ list :
http://www.shipsim.com/support/faq/keywords/boxed
Did I (pre-) order a boxed or download version of Ship Simulator?
Please login on the website and see your order overview (https://www.shipsim.com/account/downloads) for information on the ordered products. In the product description or delivery type you can see if your order is a boxed or download version.