When you start the game, you can see an abandoned motorboat on the shore. Complete a special quest at level 6 to repair it.
If you have already reached level 6, but there is still no quest, continue with Naomi's quests until she mentions the abandoned boat. If you have completed a lot of quests from Naomi and got to level 15+, yet the boat is still broken, please contact our technical support and we will definitely help you.