Just a quick question, when it says "unlocking the odyssey cruiser unlocks the ship for every vice admiral...." what exactly does this mean? Is it that the odyssey is automatically in you ship selection on every vice admiral or does it just become available to buy with dilithium?
When you buy a zen ship for the first time, it appears in your regular inventory as a reward box, which you unpack and a full ship appears in your shipyard.
This becomes an account unlock and you can go back to the Zen store and reclaim the ship again and again on any character that can unlock it (Usually restricted by faction and rank) You can also throw away and unlock any Zen ship as many times as you want.
Zen ships are account-wide, lifetime, and unlimited unlocks.
It might also be worth noting that You can always dismiss a Zen-Store ship from Your roster - and claim it again for free (if there is room). Thus You can salvage whatever is aboard and place it on a different ship - if possible. The majority of the items aboard Zen-store ships is unique and only useable once aboard that particular type of ship, though. You should be able to see which type of item it is by right-clicking on it and selecting 'info' - or looking at stowiki.org.