Yemen has a coast to the south.
NOTOC. The Naval Air Establishment Chiang Hung -LRB- 江鴻 - `` River Swan '' -RRB- was a reconnaissance seaplane developed for the Chinese Navy in the late 1920s .. reconnaissance. reconnaissance. seaplane. Flying boat. Chinese. China. It was a conventional biplane design with single-bay , unstaggered wings of equal span and accommodation for the pilot and observer in tandem , open cockpits .. biplane. biplane. The landing gear consisted of twin pontoons .