▁while ▁the ▁other ▁controls ▁the ▁Car th agin ian ▁fleet . ▁Each ▁player ▁must ▁try ▁to ▁destroy ▁their ▁oppon ent ' s ▁fleet ▁and ▁gain ▁control ▁of ▁the ▁Mediter rane an . ▁▁ ▁At ▁the ▁start ▁of ▁play ▁each ▁player ▁receives ▁a ▁number ▁of ▁points ▁to ▁construct ▁their ▁n avy ▁using ▁a ▁combination ▁of ▁faster ▁b ire mes ▁and ▁tri rem es , ▁along ▁with ▁various ▁heav ier ▁combat ▁ships , ▁up ▁to ▁He pt ares ▁class . ▁Add itional ▁points ▁may ▁be ▁spent ▁to ▁upgrade ▁individual ▁ships , ▁such ▁as ▁adding ▁marine ▁det ach ments , ▁arch er ▁platforms , ▁and ▁board ing ▁hook s . ▁L ighter ▁ships ▁can ▁be ▁used ▁to ▁collect ▁funds ▁from ▁out lying ▁ports ▁and ▁transport ▁it ▁back ▁to ▁the ▁player ' s ▁home ▁port , ▁while ▁heav ier ▁ships ▁are ▁needed ▁to ▁counter ▁the ▁other ▁player ' s ▁attack ing ▁fleet , ▁as ▁they ▁can ▁more ▁effectively ▁ram ▁and ▁sink ▁enemy ▁vessels . ▁▁ ▁Game play ▁is ▁turn - based , ▁with ▁movement ▁resolved ▁simultaneously , ▁and ▁plays ▁out ▁on ▁a ▁square ▁grid . ▁Sh ips ▁may ▁acceler ate ▁or ▁dec eler ate ▁each ▁turn ▁by ▁one ▁speed ▁point , ▁up ▁to ▁a ▁speed ▁limit ▁which ▁depends ▁on ▁the ▁class ▁of ▁ship . ▁Sh ips ▁may ▁turn ▁up ▁to ▁ 4 5 ▁degrees ▁maximum ▁per ▁unit ▁of ▁movement ▁( so ▁no ▁right - angle ▁turns ). ▁This ▁movement ▁system ▁adds ▁a ▁unique ▁tact ical ▁element ▁in ▁which ▁the ▁player ▁must ▁carefully ▁plan ▁out ▁routes ▁and ▁spe