Great game!
You may also want to check out RGP if you're not already aware of this invaluable (especially EM tech) information source. Just sayin' as a lot of Pinsiders don't seem to be. Many years worth of great info for Ship Ahoy to be found there and it has an easy to use search feature.
https://groups.google.com/forum/#!searchin/rec.games.pinball/ship$20ahoy%7Csort:relevance
Good luck!