HI Fahmi, thanks for another informative and historic video, I remembered taking the 'railway ferry' from Church Street Pier to Prai railway station in the 60s even after the double decker ferries came into service as the train track was not yet extended to Butterworth Train Station then. The first double decker ferry was Pulau Pinang which has additional side doors as it was first used to berth at Church Street Pier which does not have the front double deck roll on roll off platforms. I guess Pulau Pinang came into service before the proper terminals were completed.