User blog comment:Shinhwalee/Major Event Preparation Guide for Admirals/@comment-91.177.84.236-20150709154344/@comment-25730832-20150709155722

This place seems to be a new place to ask expedition question rather than the expedition page.

I think Shin's wording made it a bit confusing.

So Shin's table said:

3 Drum Canister (1 on each ship)

Fleet Total Level must be 30+



The original explanation in the Expedition page is a bit different:

3 (3*) - Required 3 drums, where 3* means at least 3 ships carrying drum.

So you need AT LEAST 3 ships that are carrying drum with AT LEAST 3 drums in total. Shin's explanation made it sounds like you need one for every ship which isn't true but isn't wrong.