Royal Passenger Liner has one ferry so far, accommodating up to 150 people, running daily between Pattaya and Hua Hin, shortening down the trip to 1.40h comparing to many hours in the bus running via Bangkok.
Operations started Jan 2017.
Pros: quick, high quality
Cons: 3x bus price
Take it if you value comfort and time more than money. Good for tourists, not very good for frequent commuting.
There is an ordinary deck - very comfortable though, not 3rd class at all, first class deck and 8-seater VIP room you can book only at the whole at about $400.
Please do come in advance! The departure time really depends on the weather and tides, and they can start off bit earlier than they advertise.
For Foreigners - please hold a valid passport.
March ★ 4.3