What is used to help prevent damage to barges, locks, and landings when you are locking or landing a tow?
A) Dock cushions B) Springers C) Landing bars D) Bumpers (fenders) E)NULL
Arşivler Sorular
Your vessel has a draft of 23 feet. On 23 June 1983 you wish to pass over a temporary obstruction near Beaufort, SC, that has a charted depth of 22 feet. Allowing for a safety margin of 3 feet, what is the earliest time after 1600 DST (ZD +4) that this passage can be made?
A) 1751 B) 1815 C) 1855 D) 1944 E)NULL
Which of these sextant errors is nonadjustable?
A) Prismatic error B) Graduation error C) Centering error D) All of the above E)NULL
An instrument useful in predicting fog is the __________.?
A) sling psychrometer B) microbarograph C) anemometer D) aneroid barometer E)NULL
The refraction correction table given in the Nautical Almanac is based on a standard or average atmospheric density with a temperature of 50°F (10°C) and atmospheric pressure of __________.?
A) 29.72 inches (1006 millibars) B) 29.83 inches (1010 millibars) C) 29.89 inches (1012 millibars) D) 29.93 inches (1014 millibars) E)NULL
A large automated navigational buoy, such as those that have replaced some lightships, would be shown on a chart by which symbol in illustration D015NG?
A) D B) C C) B D) A E)NULL
Under the IALA Buoyage Systems, a yellow buoy may mark __________.?
A) fish net areas B) spoil areas C) military exercise zones D) All of the above E)NULL
Which publication requires infrequent corrections?
A) List of Lights B) Coast Pilot C) Sailing Directions (Planning Guide) D) Radio Navigational Aids E)NULL
You are proceeding up a channel at night. It is marked by a range which bears 185°T. You steady up on a compass course of 180° with the range in line dead ahead. This indicates that you(r) __________.?
A) must come right to get on the range B) course is in error C) compass has some easterly error D) are being affected by a southerly current E)NULL
What indicates the arrival of a hurricane within 24 to 36 hours?
A) The normal swell becoming lower and from a steady direction B) Long bands of nimbostratus clouds radiating from a point over the horizon C) The barometer drops 2 millibars between 1000 and 1600 D) Unusually good weather with above…