after beating the elite four. the boat to the next region will dock there.
Defeat the Elite four and catch the boat from Olivine to Vermillion
after u defeat Pokemon lege u get ticket then fly to olivine then take the boat 2 kanto
Beat the elite four. Professor Elm, I think, someone, will give you the boat pass for the harbor in Olivine, which will take you to Kanto
Simple. First Defeat the Pokemon league, then talk to professer elm. Then go to Olivine to ride the ferry boat to Kanto. Then go!
in olivine city
After beating Elite 4, take boat from Olivine City.
after you get all 8 badges in johto, surf east(right) of new bark town once you defeat lance the champion, talk to elm to get the ticket for the boat in the olivine port, then board the boat
Once you've beaten the Elite Four of the Johto region, you go to.......Olivine City and take the boat on Tuesdays and Sundays I think......Or just some time of the week. The boat will take you to the Kanto region, and there your other journey unfolds!
Vermillion City is located in Kanto, the second part of your game. You must take the boat ride from Olivine City (After beating the Elite Four) to get to Kanto. Vermillion City will be your first destination.
If you're talking about the boat in Olivine City, you have to beat the Jhoto Elite Four. Then go to sea port in Olivine and Professor Oak will give you the pass and you can enter Kanto at Vermillion City.
after you have defeated elite four, go to proffessor elm and he gives you a ticket then go to the docks in olivine city and he will let you through.
Go to Olivine, then head south (down) to the dock and go into the building. Then all you have to do it show the sailor your ticket and he should let you on the boat. Hope that helped. =]