Chantier naval

Ameliore le Port : {2}{p/b}+{2}{p/g}
Creation Trireme :
{1}{p/g}+{1}{p/b}+{2}{p/u}
Creation Galere :
{1}{p/g}+{1}{p/b}+{1}{p/u}
Transformation de Navire de peche :
-{1}{p/g}+{1}{p/u}