This Old Cove Sequence 4 mission 1

This Old Cove part 1
This Old Cove part 2

Follow Kidd into the jungle and he will ask you to solve a Mayan Stelae puzzle. if  you haven't solved one yet simply climb the sculpture to the top and then activate Eagle Vision to start a mini-puzzle. Align the white lines with the environment to solve the puzzle and reveal a Mayan stone. With the Stone in hand follow Kidd into the next cove. The cove will lead to an underground hideout with a secret stairway. Make your way up the stairs to trigger a cut-scene regarding the Templar armor and the Templar Hunt Missions. After the cut scene make you way to the docks and meet with Kidd to complete the mission. After completing the mission get on the jackdaw and sail out to sea. From there Adewale will inform you about starting a fleet. When the conversation with Adewale is done go to the captain's quarters and access the map to start the Kenway's fleet tutorial. After completing the tutorial Edward can then salvage any of the ships that are plundered by the Jackdaw. The salvaged ships can be sent out on fleet missions for money gifts treasure maps and items for the Jackdaw