单项选择题 You are on watch at night in clear visibility and the vessel has just been anchored.The first thing that you should do after the anchor has been let go is to（）.

单项选择题 Most Navigation System equipment is（）from the bridge, a unique location that allows for a centralized,safe and efficient management of ship navigation.

单项选择题 Precautionary areas and IMO adopted TSS have been established through the straits between Permatang Sedepa (One Fathom Bank) and the entrance to South China Sea in the vicinity of Horsburgh Light.In this sentence,“TSS”is the abbreviation of（）.