The Storage Room is located at (2070, 1370).Afterwards, trade Blue Flame (1666, 609) to obtain Warehouse Key.The Warehouse Door is located at (2070, 1120).You need Captain's Cabin Key to enter.The Captain's Cabin Door is located at (731, 1522).The Hallway Door is located at (2050, 1010).The Pirate Ship is divided into several different sections: Pirate Ship 1F Hallway
(Do not throw out key or else you will have to buy again.) Use it and you will be inside the Pirate Ship. Once you get to the end you must touch under Pirate Ship entrance and it will ask if you want to use the Rusty Key (it does not disappear after use). When you get to the respective coordinates 492,1308 (Right under Siras Spawn) you can walk over the water (as shown in the video to the side) and follow a maze like path. The Old Cloth Map may be discarded once the key is purchased. He will then give you a Old Cloth Map that is Soulbound. Piece of Old Cloth C is found only on the Island with the Lighthouse Piece of Old Cloth A is found only on Wingfril Island Beach
Inside you will either find nothing or a map piece. Start by going to Wingfril Island Beach and breaking Bottles, which can be found all alongside the coast.