Board Thread:Wikia Discussion/@comment-25283969-20150511171714/@comment-24430017-20150606181717

Seems premature to conclude it without testing it more extensively. Almost no one has done 5 sparkled ships. The assumption of a constant +21% GS rate obviously doesn't hold at 5 sparkled ships. if you do get 84% with 4 sparkled ships, the curve may not be linear as people have previously assumed.

We already know you need every ship required by expedition to be sparkled for GS. You can add more ships to increase chances of GS. This should not have changed since the last time we tested it, but should be easy to test with 5 sparkled ships.