Ristin's Campaign Construction Center
Awesome setting, useless rules.
I’d suggest Shadowrun, and also Mechwarrior 2 or Mechwarrior 4 (in both cases using vehicles but not mechs) instead of the Blue Planet rules. Battletech has rules for all sorts of sea craft, perfect for the Blue Planet setting. The different non-human or genetically engineered human could be handled by creating phenotypes.
Eclipse Phase, possibly. This would handle the advanced technology and different bodies, but the body-swapping inherent to Eclipse Phase would need to be painstakingly removed…