How can I sell my yacht in GTA Online?

To sell a yacht in GTA Online, first understand that you cannot sell it in the traditional sense as you would a car or other property. Your yacht is considered a luxury item and doesn't have a resale value through the in-game mechanisms. However, you can effectively "sell" it by replacing it with a cheaper model, thereby receiving a trade-in credit for the difference in price. Keep in mind, though, this will not give you back the full amount initially spent on the yacht. Alternatively, to recoup expenses indirectly, focus on completing yacht missions or participating in activities that utilize your yacht to earn money over time.