Longer boat trips to the island is also possible.Click here to check their timetable to make sure you have the current info. If you're willing to get up at the crack of dawn, the Chao Phraya "green flag" express boat offers a direct service from BTS Saphan Taksin to Pak Kret (pier N33), but during peak hours only. Boats operate every 15-20 min in both directions from 06:15 to 08:00 in the morning, and again from 15:30 to 18:00 in the evening, with no service on Sundays. The trip costs 20 baht and takes just over an hour