Navigation & Watchstanding Flashcards
7 cards from real AB practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Navigation & Watchstanding flashcards as text
When two power-driven vessels are meeting head-on in a narrow channel, the proper action is:
Answer: Both vessels alter course to starboard so each passes on the other's port side
Rule 14 requires both power-driven vessels in a head-on situation to alter course to starboard so they pass port-to-port.
A lookout is ordered to report a contact. The proper format for reporting a visual sighting is:
Answer: Relative bearing and description of the object
Lookouts report sightings using relative bearing (e.g., 'Red light, broad on the port bow') so the bridge team can immediately locate the contact.
What is the significance of the term 'danger angle' in coastal navigation?
Answer: A vertical or horizontal sextant angle that keeps a vessel clear of a hazard
A danger angle is a sextant angle — horizontal (between two charted points) or vertical (of an object of known height) — set to keep the vessel outside a danger zone.
Which statement about keeping a proper watch in port is correct?
Answer: A watch must be maintained at all times, even when in port, to ensure safety and security
STCW and company SMS requirements mandate that a proper watch be kept at all times in port to guard against fire, flooding, unauthorized access, and other hazards.
According to COLREGS, a vessel engaged in fishing with nets extending more than 150 meters horizontally shall exhibit:
Answer: A white light in the direction of the gear in addition to prescribed fishing lights
Rule 26 requires a vessel fishing with outlying gear extending more than 150 m to show an additional white light in the direction of the gear.
A vessel steering 045°T with a current setting 270°T at 2 knots will experience what effect on her track?
Answer: The current will set the vessel to the north, making good a track to the left of course
A current from 270°T (west) flows eastward, pushing the vessel to the right (northward on a 045° heading), making good a track left of the intended course.
When using a parallel ruler to transfer a course line to the compass rose on a nautical chart, the navigator walks the rulers from the course line to the nearest:
Answer: Center of the compass rose, reading the true bearing scale
The parallel rulers are walked carefully to the compass rose center so the course line direction can be read off the rose's true (outer) or magnetic (inner) scale.