Swimming
Default: HT-4.
This is the skill of swimming (whether on purpose or to keep afloat in emergencies) and lifesaving. Roll against the higher of Swimming or HT to avoid fatigue while swimming or injury due to aquatic misfortunes. When racing someone of equal water Move, roll a Quick Contest of Swimming to determine the winner. See Physical Feats: Swimming.
Note that Swimming does not cover high diving – that's Sports (Diving).