It's probably just as simple as A.C. doesn't offer it as standard given most andriods work in space, and Gina just asking for a body that does x, y, and z and forgetting to check (Gina being a Get-Up-And-GO! sort of lady as far as I can tell from BA's descriptions).
Besides, the floatation devices let an android swim like a human. The hydrophobic field drive lets them outrun supercavitating torpedoes. Bit of a difference.
Besides, the floatation devices let an android swim like a human. The hydrophobic field drive lets them outrun supercavitating torpedoes. Bit of a difference.