1) momentary equilibrium : the deal must be done immediately
2) short run : there is time to adjust supply by short-term measures
Ex) lay--up, reactivation, combined carriers switching markets or operating ships at a faster speed계선, 운항속도 조정, 겸용선 전환투입 등으로 공급을 조정할 수 있음
3) long run : shipowners have time to take delivery of new ships and shippers have time to rearrange their supply sources