Create Harbors craft your boat. Then deploy in the water. Harbour size dictates the size of how big you can make the Boat (Like the updated Nether Portal). Requires Sail blocks specifically made for the large custom boats. Sails size number and surface area dictates boats speed based on the number and types of blocks used. For Example wood is fast, stone is slow and to much stone sinks. Sail blocks made from paper. Can't use sand in the outside hull, water in ships disappear when deployed. Large boats need to have an anchor and sails before it can be deployed. Losing parts in the hull will cause the Boat to sink. The large the holes the faster it sinks. Cannons and Cannon Balls. Cannons require wood iron gun powder to craft. Iron for cannonball. If the Boat sinks more than a specified depth it breaks up into it's different blocks. Harbors are made of wood blocks and posts. Rudders and were it's placed based on the size and weight of the Boat plus speed dictates handling. Stone boats can sail on lava, wood boats burn on lava. Max boat height limit is always 40 blocks High, Max width of 20 and max length 50. Random spawned ghost ships at night carry zombies and skeletons. Large boats cause guardians and drowned to spawn more frequently around them.