“Butterfly”sea cucumber
150 ton Sea Surveillance Ship
1982 United Nations Convention on the Law of the Sea
1D improved fractal sea surface model
2D improved fractal sea surface model
a western south China sea gas field
abeam replenishment at sea
abnormal sea-level events
above mean sea level
平均海面之上
平均海平面之上
平均海面之上平均海平面之上
above sea level {= ASL}
Abrupt Changes of Sea Ice
access to territorial sea