Also, U.S. Navy warships blockaded and periodically bombarded the island. French troops then blockaded the Gulf of Siam and occupied Chantaburi and Trat. PLA patrol boats blockaded the islands, keeping out ROC supply ships. The Baltic fleet was blockaded in Leningrad and Kronstadt by minefields, but the submarines escaped. At one point, nearly 300 students blockaded the administrative offices and boycotted classes. French ports were blockaded by the Royal Navy. Venice was blockaded by French and Italian troops under St. In 1603 and 1639, the city was blockaded by Dutch fleets, though never captured. Russian Black Sea Fleet blockaded the Georgian coast. They blockaded villages and roads and set forests on fire. In October 2011, more than 200 protesters blockaded the site. During the war Switzerland was blockaded by the Allies and therefore suffered some difficulties. After this, consultation the troops blockaded Chaukot. The Black Sea had been blockaded throughout the war, severely limiting the amount of exports. They blockaded her port with a fleet.