X0101 EFFECT 33 LIVE 2020-03-03 0001193125-20-052917 POS AM 0001332639 Seaspan CORP 333-225681 0001743246 Seaspan Advisory Services Ltd 333-225681-14 0001743224 Seaspan Management Services Ltd 333-225681-13 0001743225 Seaspan Crew Management Ltd. 333-225681-12 0001743237 Seaspan Ship Management Ltd. 333-225681-11 0001743212 Seaspan Investment I Ltd. 333-225681-10 0001743213 Seaspan Holdco IV Ltd. 333-225681-09 0001743238 Seaspan Holdco III Ltd. 333-225681-08 0001743214 Seaspan Holdco II Ltd. 333-225681-07 0001743215 Seaspan Holdco I Ltd. 333-225681-06 0001743216 Seaspan Containership 2181 Ltd. 333-225681-05 0001743255 Seaspan Containership 2180 Ltd. 333-225681-04 0001743254 Seaspan (Asia) Corp 333-225681-03 0001743231 Seaspan 140 Ltd. 333-225681-02 0001743200 Seaspan Holding 140 Ltd. 333-225681-01