Since the Risian ship has been a boat type models. I was thinking for a trimarans type carrier that launches Hangar Pets-Risian Corvettes (frigate). I found a designer that concept a ship with nature. I thought that was nice since yesterday was Earth Day. Seataci is a trimaran yacht that follows the concept of a whale. See the link below.http://imaginactive.org/2016/10/seataci/https://www.youtube.com/watch?v=d0rYgNdjwlQ
Second idea is the Pyramid Yacht. They hydrofoil pod will have the warp nacelle and deflector dish. See link below for the design concepthttp://schwinge.co.uk/
Star Wars has Squid ship (Clone Wars), Manta Ray, & Hammerhead.
Elite Dangerous has Orca ship.
Disney has the Manta Ray ship. (Incredibles)
Korean has the turtle ship.
Yes, I'm very fond of carrier style ship that launches frigates.