With this in mind, each pirate was to take a share of their enormous treasure and hide it somewhere on this island of Dominica. They were also to hide a key with their treasure. Using their skill and all they had learned from Steel, they were to make sure the treasure would never be found without a map that they would also create. Then every pirate was to return to the captain with two maps to each treasure for safety. The captain's plan was to lock both maps in a compartment of the Chest of Zanzibar.

The Chest of Zanzibar had fifteen compartments, enough to dedicate each compartment to one of the hidden treasures. Steel explained to the crew that he would lock every compartment on the chest and destroy the keys he used to lock them. This meant that the only keys that existed to these compartments were those found in the treasures. So one find would lead to another compartment and this, in turn, would lead to another treasure.

Once the last drawer was locked and the ship's keys destroyed, the treasure could only be found in a particular order. They would all lead to the largest treasure, Captain Henry Steel's own priceless booty that he was planning to hide himself. In the fifteenth and final compartment, Steel was to place a map of the entire island with an 'x' on every spot where treasures of gold were buried.