I don't have any precise stats, but these details from the 1.2 patch notes help.
-- Top Forward Speed (fastest to slowest): Squid, Goldfish, Pyramidion, Galleon, Junker, Spire
-- Forward Acceleration (fastest to slowest): Squid, Junker, Goldfish, Spire, Pyramidion, Galleon
-- Top Turn Speed (fastest to slowest): Squid, Junker, Goldfish, Spire, Pyramidion, Galleon
-- Turn Acceleration (fastest to slowest): Squid, Spire, Junker, Goldfish, Pyramidion, Galleon
-- Mass (largest to smallest): Galleon, Pyramidion, Spire, Goldfish, Junker, Squid
-- Vertical Acceleration (fastest to slowest, all top vertical speed is 12m/s): Squid, Spire, Goldfish, Junker, Pyramidion, Galleon