The summer event takes place from June 9th to July 21st.
During Star Trek Online’s 2016 Summer Event you will be able to obtain Lohlunat Prize Vouchers (2016) by participating in the Flying High event.
These Prize Vouchers can be spent on an Event Reputation project to obtain the Vorgon Xyfius Heavy Escort!
This project requires 1000 Lohlunat Prize Vouchers (2016).
Once this starship is obtained by any character on your account, any characters on this account can claim the Vorgon Xyfius Heavy Escort from the Account Claim tab within the Event Store (in the Event Reputation window).
Full article here.