The easiest way for corporation mentors to pass out ships to members is via contract. This allows us to account for all the ships we've given out and track who takes what. If you need a mining barge replaced or need a specific ship from a mentor the contract will likely be set to private and only available to you. For our PvP fit frigates, though, we just put a bunch on contract available to the corporation. We ask that you only take one out at a time and don't take another one until the first is blown up. Obviously it's perfectly acceptable to have more than one type of ship off contracts at one time (for example, a Merlin that uses blasters and a Breacher that uses rockets), Just don't go crazy!