Some more ideas. This time for some events and treasures:
*Updated thanks to Xerecs
Events:
Fair Seas – 3 Cost – All ships gain +S in movement for the next 3 turns
Rough Weather – 4 Cost – When revealed, for the next 3 turns, any ship, on the entire map, conducting a movement action will roll a d6 before thier movement action. On a 5 or 6, nothing happens. on a 1-4, move the ship S in the indicated direction. 1: directly aft (forward) , 2: starboard (right), 3: port (left), 4: astern (backward)
Hurricane Gales – 5 cost – When revealed, for the next two turns, any ship, on the entire map, conducting a movement action will roll a d6 before their movement action. On a 5, remove a mast and reroll. On a 6, nothing happens. On a 1-4, move the ship L + S in the indicated direction. 1: directly aft (forward) , 2: starboard (right), 3: port (left), 4: astern (backward)
Port Call – 2 Cost – When revealed, choose one ship docked at an island. Roll a d6. On a 1, remove a random crew from the ship. On a 2, remove a random treasure from the ship. On a 3, you cannot move the next turn. On a 4, add a random treasure from the island. On a 5, gain an extra +L movement next turn. On a 6, gain another action next turn. Remove this event from the game at the end of the turn.
Unique Treasure:
Storm in a Bottle: When revealed, follow the rule of Rough Weather