SUDONG SPECIAL PURPOSE ANCHORAGE (ASSPU) For Liquefied Natural Gas (LNG) vessels, Liquefied Petroleum Gas (LPG) vessels, non-gas free LNG vessels, non-gas free LPG vessels, non-gas free chemical tankers, chemical tankers with safety hazard cargo on board as listed in chapter 17 of IBC Code, oil tankers requiring immigration clearance, and other vessels as directed by the Port Master. Entry into this area is prohibited to all vessels over 47 metres high.