In the game Age of Sail, merchant ships are quite important because they often encounter many pirates while transporting goods. If attacked by pirates, it's easy to lose supplies, which can result in significant trade losses. Therefore, it's necessary to strengthen the merchant ships. Naturally, one might ask how to strengthen the top-tier merchant ship in Age of Sail. Here, I will provide the methods for strengthening the merchant ship to help players improve their sailing experience.
Firstly, strengthening a merchant ship only requires four components. These four components can enhance the four attributes of the ship. You should first strengthen the ship's sails, bottom, ropes, and space. This will allow you to strengthen the ship to level one, at which point the ship will have a noticeable improvement in its defense rating.

Next, a second round of strengthening is needed. The materials required for the second reinforcement are enhanced materials. If only ordinary materials are used, the ship's star rating will remain at C. The materials needed this time are quite substantial, including the ship's model, the tail, paint, and the top of the sail. All these materials need to be of green quality or above. After upgrading, the ship can be promoted to B grade.

Some players may wonder how to obtain these equipment. If players have sufficient funds, they can directly purchase them from the store, allowing for quick upgrades. If resources are insufficient, then one has to travel various routes to gather the necessary materials for enhancement.

Finally, to directly promote the ship to S grade, the upgrade strategy changes slightly. Players can observe the ship's four values: square sail, fore-and-aft sail, wave resistance, and turning. All four values must reach full level to promote the ship to S grade. Players need to check which value they are missing.
Based on the missing values, select the appropriate items from the ship's accessories to complete the star promotion. This reinforcement process will likely require two rounds. Additionally, purchase B-grade or higher ship models from the store. This way, you can successfully promote your ship to S grade, thus obtaining the top-tier merchant ship head.

Currently, this is all the information provided on how to strengthen the top-tier merchant ship in Age of Sail. To unlock the top-tier merchant ship, an S-grade ship is required. The strengthening process can be completed according to the steps mentioned above, although it consumes a large amount of material.