You can get to Koh Larn by ferry or speed boat.By furry First you need to get to the Bali Hai Pier where the ferry boat is docked.You must purchase a ticket for $ 30 baht to the Tawaen but it takes about 45 minutes to the beach.And that is important the furry is scheduled departure time 4 times a day is 8.00 9.00 11.00 and 13.00.
The return trip as well, starting with 4 13.00 14.00 15.00 and 16.00.