| Building | Needed Parts |
 Broken Ship Wheel |  10 Retriever Net |
 Moss Rocks | 22 Retriever Net |
 Fall Castle Tower |  28 Magic Trident |
 Large Sunken Ship | 42 Magic Trident |
Broken Ship Wheel | 10 Retriever Net |
Moss Rocks | 22 Retriever Net |
Fall Castle Tower | 28 Magic Trident |
Large Sunken Ship | 42 Retriever Net |
More information : Opal's Kingdom Farm Complete Guide
