include swimming rules

systems.tex

@@ -230,6 +230,13 @@ A tie means the character comes to a sudden halt, without Damage.
 Failure means $1D6$ Damage, plus the character's Speed (running faster means more Damage).
 \index{Darkness!Running}
 
+\paragraph{Swimming} -- \roll{Speed}{Seafaring}.
+The \gls{tn} depends on the water's speed -- large rivers might have a \gls{tn} of 8, while an open sea in a storm might be \gls{tn} 12.
+\index{Swimming}
+
+Characters can swim 1 \gls{step} per \gls{ap} spent.
+If they do nothing but swimming, they can add their Athletics Skill to the total at the end of the round.
+
 \subsection{War \& Battery}
 
 \paragraph{Calm an animal} -- \roll{Intelligence}{Wyldcrafting} vs animal's \roll{Wits}{Brawl}.