Talk:General Discussion/@comment-25189003-20141007124002/@comment-113.160.87.66-20141008024935

There was one guy who posted his expedition 21, 37 and 38 statistic and proved that number of drums u carry (as long as it meets the minimum requirement) doesn't affect great success chance.

Default great success chance for drum expedition without any sparkled ship is 50%, which continue to rise for each sparkled ship in the fleet but the bonus great success rate is lower than other expedition. (thus u'll still need 6 sparkled ships for 95-100% great success chance, but u could use only 2-4 sparkled ship and still get pretty good success rate)