What materials are needed for the advanced "Seven-leaf Sail" in "Tianya Mingyue Dao"?

You need seven-leaf sail making books, keel making books, watertight compartments, etc.

Go directly to the shipyard where the ship is built. I really don’t remember what the material is called, but it must be a seven-leaf sail production book. Now it costs more than 6,000 in circulating gold to buy a seven-leaf sail at the auction house, otherwise You can only fight pirates.

After the young hero completes part of the main navigation mission, the player will be given a ship manufacturing book, a keel manufacturing book and several ordinary artillery manufacturing books. Then we can go to the shipyard to make it (in the big world of Tiandao, the shipyard has two places to enter, namely the Qiantang River teleportation point in Hangzhou and the Ninghai Town teleportation point in East Vietnam, and then talk to the Maritime Affairs Department official Enter), so far we can only make medium-sized ships. Medium-sized ships require 100 pine wood, 100 sandstone, 500 logs and 200,000 song coins. Then this ship is the most basic part of one of our ships.

With the basic ship, we need to make our ship stronger, so we need watertight compartments. Watertight compartments can increase the HP of our ship by 5000 points. Such compartments The cabin will provide a lot of convenience for us to fight pirates later. As for the output of watertight compartments, they are dropped by defeating medium-sized pirate ships and giant pirate ships. The probability of this drop is relatively high. After defeating almost 8 medium-sized pirate ships, a blueprint will appear. Of course, it all depends on luck.