(1) During the intensive recultivation efforts around the Shanghai Islands in the late 1960s , many tankas were settled on the island of Hengsha and organised as fishing brigades .
(2) During the intensive reclamation efforts around the islands of Shanghai in the late 1960s , many Tanka were settled on Hengsha Island and organised as fishing brigades .

Do these two sentences mean the same thing?

(1). no
(2). yes
(2).