Bumping the topic, as this is a really good board game. Recently the owners of the game published all necessary materials to make the game yourself:
http://www.consimpress.com/downloads/the-hunters/
Eventually you still will want to buy one as the quality will be superior, but it's good to use it as a demo. They also published ZunTzu and Vassal modules for the game, if you want to try it without printing.
This board game actually help me to understand the basic U-boat tactics and made me install SH3
.