Now i can understand you much better.
1. You have to find the Admiral key which is laying on one deck of the ships Augustine, Caroline, Eva, Fury or Protector. This is always random and you have a time limit to find it before the Admiral does, who is also searching for it because he lost his key. You must look very carefuly because it is not easy to see.
2. If you have the key, you have to go to the ship Tartarus, jump in the water and swim around the ship till you find a hole in the buttom of it. Inside is the Admirals chest beside the skeleton of Teaser Dan which you can open now and find very valuable things inside. Enjoy!
3. You must talk to the Admiral, the bartender, the barmaid and all of the other people in the city again and again for many times to get new quests or items. You must always ask all available questions. One time is not enough!
4. You will have to fight with both clans one after the other but only quest related when you are ordered to and it is not true that you have to visit them without weapons. The Admiral will tell you when it is time to fight against the Narwal clan and the Casper clan can only be eliminated later on after you saved the life of Cecile Galard on the ship Eva. But this will come by the time and not all in the same moment. Most important for starting further quests is to talk to the bartender and the Admiral Chad Capper again and again. It is also very important to stay over night in the ship Fleuron, leave it the next morning and return to receive news from the bartender.
5. The priest in the church also has a quest for you to bring him a lot of candles which are stored in one chest from the storekeeper.
6. Very important also is to keep some salt, wine, grapes and a lute. Don´t sell always everything that you will find in the chests or you will not be able to leave the island in the end. Be carefull, this game is hardcore!
This should be enough for the moment. I wish you good luck and good gaming!