⑸ Flotation center of a ship

⑴ Standing orders

⑵ Air draft

⑶ Controllable pitch propeller

⑷ Collision

二、Please translate the following sentences into English.（25 分） 負責航行當值之甲級海員應在駕駛台保持當值，且不論船長是否在駕駛 台，應持續負責船舶安全航行，若船長特別告知已承擔航行職責，方得 離開駕駛台。當值船副並應每隔適當時間使用船上任何可用之航儀，對 所操縱之航向、船位以及航速予以核對，以確保本船依循預定航線航 行。此外，當值船副需對於船上所有安全及航行設備之位置及操作方法 具備充分之知識，並應了解這些設備操作上之限制。

三、Please translate the following sentences into Chinese.（25 分）  According to the principles based on International Convention for the Safety of Life at Sea (SOLAS) Chapter II-2, the requirements for the fixed CO2 fire extinguishing system in the engine room and cargo spaces are as follows. ● The fixed fire extinguishing room is properly marked and in satisfactory condition and readily accessible, and the ventilation is satisfactory. ● The operating instructions of the fixed extinguishing system in an appropriate language are permanently posted. ● The gas cylinders are complete, properly stowed and absence of corrosion. ● The maintenance and service records, including the last service and the next due pressure test, shall be available and readily to be examined. ● The pipelines shall be in satisfactory order and have no heavy corrosion. ● The audible alarm, including the time delay for the gas release, should be tested at a regular interval. 

四、According to IMO, an e-navigation concept can be defined as「the harmonized collection, integration, exchange, presentation and analysis of maritime information on board and ashore by electronic means to enhance berth to berth navigation and related services, for safety and security at sea and protection of the marine environment」. Global Maritime Distress and Safety System (GMDSS) plays an important part in the ship/ shore communication. Please discuss the role of GMDSS in e-navigation and give your opinions in English.（25 分）

(二)在當值交接前，接班之甲級船員應親自掌握船舶預估船位或真船位，並確認預定之航跡、航向與航速及機艙無人當值時之控制，並應注意在其當值期間預期可能遭受之任何航行危險。

(一)遺憾地通知您，我的三副JOHN，35歲，自2023年5月26日離開越南後，腿部受傷骨折，由於船上醫療條件限制，透過衛星傳真醫師的建議，最好在您的港口及時登岸就醫，懇請協助與安排。

(二)Please be informed that we would like to send a surveyor on board the vessel “ABC” in the port of Keelung on 1st April 2023 in order to investigate the circumstances and possible damage to the vessel. We invite you to send your own surveyor. In order to arrange the further details of the survey, we kindly ask you to let us know as soon as possible whether you would like to attend.

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