Due to how the system works (we have to put a fullpath in an <a> tag when it's on a different subdomain, so we put clearnet domain), you have to type the subdomain manually:
http://boards.jja4e6r6ewk5prcabynuqlr3jjelip4ishx5kcjusb65ugmvrh5awvid.onion/overboard/

For Rules and FAQ are just there too:
http://jja4e6r6ewk5prcabynuqlr3jjelip4ishx5kcjusb65ugmvrh5awvid.onion/rules/
http://jja4e6r6ewk5prcabynuqlr3jjelip4ishx5kcjusb65ugmvrh5awvid.onion/faq/

I'll include this in the FAQ