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The Croatia post did give by this issue.

The BRACERA, the coastal cargo sailing vessel is the most characteristic merchant boat along the Croatian coast of the Adriatic with a length between 12 to 17 meters.
The BRACERA, like other boats in the Adriatic that have for centuries represented the traditional centre of a certain seafaring social community shows the perfection of form of a small boat, achieved in the course of a thousand-year-long evolution.

The book “Aak to Zumbra a Dictionary of the World’s Watercraft” gives, that she is also known as BRAZZERA, and used for coastal merchant use or fishing. She were reported from the early18th century, and the type originated from the island Brazza (Brac) on the central Dalmatian coast. The type was used in Croatia and North East Italy, but she is now extinct.
She could be rowed or set sails. Crew 2 -6 men.
Reported lengths 7 – 12m, beam 3 – 4m and depth 0.5 – 1m.

Croatia 1998 1k80 sg557

Bracera is one of the most characteristic costal sailing vessels of the Croatian Adriatic coast and one-mast bracera with the lug sail from the 19th century is the best known among all types. It seems that this solid and very mobile small ship developed as the result of the Liburnian traditional form.  The Liburnians were actually for millenniums first class seamen and ship builders.  Their shapes and solutions were adopted also by practical Romans and millenniums later also by Americans.
 
The vessel had wide applications because it was especially apt for trade and general communication between numerous Adriatic islands as well as between its neighbouring coasts. 

Braceras were used to transport wine, olive oil and other agricultural products, but also people and cattle and they were used for fishing, harvesting sea sponges and excavating sand from the sea along the whole coast.
 
The vessels were oar-powered or wind-powered which for millenniums were the main power resources for vessels. It is presumed that the name bracera is derived from the word Brazza - a historic name for the island of Brač from the period of domination of the Venetian Republic of San Marco. Besides, it seems that bracera was also a more adequate response to the demands of the environment and the inhabitants of the eastern Adriatic coast preferred to build smaller and cheaper bracera vessels than the more expensive trabakul and pelig ships.
On the other hand, the hull of the vessel was a crucial factor of the inseparable hull-sail system. Therefore, in the Adriatic region the sails of ships changed according to the demands of the environment and customs: from the supported sail, over square, lateen, lug and gaff sail and the immovable staysail at the bowsprit.  The number of masts could be one and in Istria two or three. 

Croatia Post