sentences:  Along the coast of Pulau Ubin, there are multiple jetties and boardwalks from east to west, the Chek Jawa Boardwalk, Chek Jawa Viewing Jetty, Pulau Ubin Main Jetty, OBS Camp Two Jetty and OBS Main Jetty.The jurisdiction of Serangoon Harbour falls under the Police Coast Guard Loyang Base.In the event of an aviation accident in the area, the Changi Airport Emergency Service (AES) would be deployed too.