What has happened?
Aground.
23. What does the abbreviation IALA stand for? J IALA stands for International Association of Lighthouse,
24. Is it safe to pass north of a North Mark?
Yes; 1{
25. Is it safe to pass north of a South Mark? N�;
26. Does "variation^ change due to ship's position? Yes, Vfc �z
27. Does "deviation" change due to ship's position?
21. Can you define the very important term u underwayw ?
Underway means that the ship is not at anchor, not made fast to the shore, not aground. )/[ / (
22. You observe a ship, during exhibinil^ three balls on the same haj^
e/^torities. When correcting charts】why must you use symbols and abbreviations from chart
5011?
b make charts show gl difference, tew chart. Is it right ready for use?
No. We should cwtect it according to Notices to Mariners.
30. What publicationdo you needvto correct charts properly?
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