20. The symbol attached below on the chart means:
(A) Coral rock, not obstacle to navigation safety
(B) Coral rock, obstacle to navigation safety
(C) Sunk ship, not obstacle to navigation safety
(D) Sunk ship, obstacle to navigation safety

1. 下列何種國際海事衛星系統(INMARSAT)可提供一般電話服務？(A) INMARSAT-B(B) INMARSAT-C(C) INMARSAT-D(D) INMARSAT-E

2. 於GMDSS系統中，下列何種海事安全資訊系統採用518KHz進行操作？(A) NAVTEX(B) MF DSC(C) HF NBDP(D) EPIRB

3. GMDSS系統中，下列何種地面設施是屬於衛星輔助搜救系統(COSPAS-SARSAT)？(A) 衛星海岸台(CES)(B) 海岸無線電台(CRS)(C) 地面世界協調時(UTC)(D) 當地使用者接收站(LUT)

4. 下圖所示之國際信號旗為何？(A) B(B) I(C) O(D) Q

5. What does the abbreviation SWL stand for?(A) safe working load(B) safe water line(C) ship without light(D) signal wave letters

6. What light signal shall be exhibited for a vessel engaged on pilotage duty while underway? (A) At or near the masthead, two all-round lights in a vertical line, the upper being red and the lower white. Sidelights and a sternlight. (B) At or near the masthead, two all-round lights in a vertical line, the upper being white and the lower red. Sidelights and a sternlight. (C) At or near the masthead, two all-round lights in a vertical line, the upper being green and the lower red. Sidelights and a sternlight. (D) At or near the masthead, two all-round lights in a vertical line, the upper being red and the lower green. Sidelights and a sternlight.

7. Your vessel is a deep draught vessel and constrained by her draught. What sound signals you should sound in restricted visibility? (A) One prolonged followed by two short blasts at intervals of not more than 2 minutes. (B) One prolonged blast at intervals of not more than 2 minutes. (C) Two prolonged blasts at intervals of not more than 2 minutes. (D) Four short blasts at intervals of not more than 2 minutes.

8. Which of the following navigational instruments would not have a detrimental effect when failure of gyro compass? (A) ARPA. (B) Automatic steering. (C) GPS. (D) Gyro compass off course alarm.

9. Which of the followings is a timekeeper?(A) RADAR.(B) Chronometer.(C) Anemometer.(D) Clinometer.

10. What is the fog signals of a fishing vessel making way through the water but not engaged in fishing? (A) One prolonged blast followed by two short blasts at intervals of not more than 2 minutes. (B) One prolonged blast at intervals of not more than 2 minutes. (C) One prolonged blast followed by three short blasts at intervals of not more than 2 minutes. (D) One prolonged blast followed by four short blasts at intervals of not more than 2 minutes.

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