In the 1978 campaign , the '' Rainbow Warrior '' spent a month interfering with whaling operations in Icelandic waters without incident . In the 1986 Hvalur sinkings , activists from the Sea Shepherd Conservation Society sank two unoccupied whaling vessels , '' Hvalur 6 '' and '' Hvalur 7 '' , and sabotaged a whale processing station in Hvalfjörður
1986 Hvalur sinkings
1986 Hvalur sinkings
Anti-whaling