Here is an example what you can visit in one week (I found it on adriatica.net pages and copy here....as i'm newbie on this forum I still can't publish links
Boarding in Trogir from 11:30 am until 1 pm, with departure shortly after. We will stop in one of the Island of Ciovo coves to have our first swim in the crystal-clear waters of the Adriatic. The tour takes us further to the Makarska Riviera, renowned for its magnificent shingle beaches that stretch one after another like a string of pearls, interrupted only by an occasional rocky part. We will spend the night in Brela, Baska Voda or Makarska. For guests arriving late we have organised transfer - boarding in the evening hours.
We will be sailing past the islands of Brac and Hvar towards the Peljesac peninsula, famous for its first-class red wines. After a swim break in one of the Peljesac coves, we will sail on to the village of Pomena on the Island of Mljet. A part of the island has been designated national park - two salt lakes (the bigger one having a small island in the middle, home to an erstwhile monastery), connected with the sea only by a small canal. All interested can visit the National Park (entrance fee, including a boat ride to the island with the monastery, is € 13, payment on the spot). We recommend going for a swim in one of the salt lakes, where water temperature is always 2 degrees higher than the surrounding sea.
We leave Mljet Island and continue southwards. After a swim break in the Elaphites archipelago, we will dock in the port of Dubrovnik, around 4 pm (the Old Town is about half an hour on foot away, or a few minutes on the local bus, which stops in the vicinity and runs every 15 minutes. The price of ticket is 10 Kuna, and the last bus back is at 2 am). The rest of the day is at your disposal to explore this unique ancient city, resembling an open-air museum, and enjoy.
Dubrovnik has been aptly nicknamed "the Pearl of Adriatic", since in its heyday, during the Middle Ages, it went among the most significant cultural and economic centres on the Mediterranean. Today, its old historical core is introduced to the visitors as a unique open-air museum with many features of interest. You too will have the chance to explore Dubrovnik during our stay there. We will spend the night in the small village of Slano, a picturesque fishermen´s village lying in a deep cove north of Dubrovnik, used as a natural harbour since ancient times. Before we dock in Slano, we will sail along the Elaphiti archipelago, where we will take a swim break for refreshment. The alternative is spending the night in a fishermen´s village on the Island of Sipan.
We will sail north towards the Island of Korcula. The town of Korcula boasts one of the most beautiful historical cores in all of Dalmatia. Because of its fortress-like walls it is often called the "Little Dubrovnik". In ancient times, the island was called the "black island", for its thick and vast pine tree forests. We will spend the night here, in the birthplace of the famous seafarer and explorer, Marco Polo.
From Korcula we make way towards Hvar - an island known for its mild climate and vast fields of lavender. The port the of like-named island´s capital is located right underneath the fortress from which one can glimpse an astonishing view of the Pakleni archipelago, strewn across the sea in front of the town. Since it is possible that the little port will not be able to take us up, should it be too busy, the boat captain will decide on the spot whether we spend the night in Hvar or perhaps in one of the nearby coves.
We will sail past the Island of Brac and after a swim break on the Island of Solta we will say goodbye to Dalmatian islands and return to where we started, Trogir. Trogir is called the town-museum, because of the fact that the entire historical core is protected by UNESCO and has been listed as the World Heritage Site. Treat yourself to a unique experience, have an afternoon/evening stroll around its winding streets and admire the impressive walls, towers, churches, frescoes and ceilings, with an occasional snoop around an ancient courtyard.
Disembarkation after breakfast, around 9 am.