169. How is variation indicated on a small-scale nautical chart? ______

170. Which information does the outer ring of a compass rose on a nautical chart provide? ______

71. _____ is a full nautical record of a ship’s voyage, written up at the end of each watch by the officer of the watch.

17. A vessel to which Annex V to MARPOL 73/78 applies is 24 nautical miles from the nearest land. Which type of garbage is prohibited from being discharged?

What does the abbreviation MSL stand for on a nautical chart A: Mean sea light. B: Mean sea level. C: Moment sea level. D: Moment sea light.

対于第四句，以下选项中英译正确的是（多选） A: This is PLANS/CNS ZHENGHE B: bearing 095 degrees from you C: distance 5 nautical miles D: speed 20 knots.

TAIWAN STRAITS EAST GUANGDONG: CLOUDY TO OVERCAST WITH LOCAL SHOWERS WIND NE 22 T0 33 KTS SEAS ROUGH TO VERY ROUGH VIS 10 T0 20 KMS. The visibility in this area is ___ .nautical miles. A: 22 to 33 B: 11 to 16 C: 5 to 10 D: 10 to 20