If a towboat requires a double lockage it shall give which sound signal at a distance of not more than one mile from the lock?
A
One short blast followed by two long blasts
B
One long blast followed by one short blast
C
Two long blasts followed by one short blast
D
One long blast followed by two short blasts
E
İlgili Sorular
You are proceeding up a channel at night. It is marked by a range which bears 185°T. You steady up...At about GMT 1436, on 3 December 1981, the lower limb of the Moon is observed with a sextant having ...How often must the emergency generator be tested on a mobile offshore drilling unit?What is characteristic of an occulting light?The DEEP DRILLER, loaded as shown in Sample Load Form #5 (Survival), suffers major damage which resu...