µµ¼ Á¤º¸
³» ¶óÀ̺귯¸®
Google Play µµ¼
Lowering a lifeboat at sea in bad weather, wind and sea forward of beam. Hoisting a lifeboat in a seaway..
A method of picking up a man overboard.
Life buoys.
Signals to and from lifeboats
25
26
27
29
30
31
32
34
37
43
48
50
51
52
54