The NYPost has an article, and of course they used a picture of a Type VII sub to represent Imperial German Navy subs.
Also, the submarines are described as being WWI subs at one point, and WWII subs at another point in their article. Is it a mix of subs from both world wars? If so, they should clarify. Not very impressive journalism.
http://www.nypost.com/p/news/interna...zk05pQXPJZRcVI