I just built an offline version of the cruising and sailing wiki.
I have uploaded it to filehosting.org and the link to download it is here:
filehosting.org | Download | cruiserswiki.zim
The file will stick around for about 3 weeks minimum, or about 20 days after the last download. It's about a 1.1GB download including all of the images, so make sure it's something you download before you go anywhere rather than trying to do so at sea.
In order to use it, you need an offline ZIM viewer, these are about for the Android and iPad type platforms. The one that I have been using is called kiwix, it gets pretty good reviews. Do a search for kiwix in the android or ipad app stores, it should be there. No doubt you'll need some kind of external storage such as a micro SD card.
I've loaded a copy on to my samsung tablet and it seems pretty good so far. There are a few formatting issues but most of the information is there just like in a web browser.
I'll try to update the offline copy at regular intervals if people find a use for it.