nounThe bricola, or briccola, is a framework made of two or more big wooden poles tied up together and sunk into the water in order to mark out water ways within the lagoon of Venice.
The same framework is called duc d'albe or dalben or dolphin in international sailors' language.
Rows of bricolas are used in order to warn boats of the edge of the deepest part of the lagoon, where sailing is safe. Following their path, boats can avoid grounding on the shallows.
The bricola is different from the palina, which is made of only one pole and is used as a mooring post.