Tap on the map icon. You will find the map on the top of the screen. Now tap the “Task” button on the bottom of the screen. You will get a list of special tasks. Complete them one by one to get your rewards, which includes wood and gems.
Tap on the “Journey” button beside the “Task” button to have a look at all complete ships. Tap on the magnifying glass on the bottom of the ship portrait to get a 3D view of ship in a bottle.