F1 - 1090105 Determine position and the accuracy of resultant fix by any means

C-2

Index mirror

The part of a sextant mounted directly over the pivot of the index arm is the ______

An area with defined limits which should be avoided by all ships

How would you interpret an area to be avoided? It is a routeing measure comprising an area within defined limits in which either navigation is particularly hazardous or it is exceptionally important to avoid casualties and which should be avoided by all ships or certain classes of ships.

positive correction

A sextant having an index error that is off the card has a ________.

Along the established direction of traffic flow

How would you lay out a course line that indicates the directional flow of ship in a traffic separation scheme?

After the contact has been marked at least twice

The closest point of approach (CPA) of a contact on a relative motion radar may be determined ____________.

Advection fog

Which type of fog is the most dense and widely spread of hose that occur on the Great Lakes?

Accumulated rate

How would you classify the total amount of time which the chronometer has last gauge?

A v-shaped ripple observed pointing downstream

How would you know a condition where two currents meet a downstream end in the middle of the bar?

A vessel using an inshore traffic zone

Which of the following vessel is categorized as NOT using a traffic separation scheme in the content of Rule 10 of the International Regulation for Preventing Collision at Sea?

A vessel under 20 meters in length

Under COLREGS Rule 10, who shall not impede the safe passage of a power driven vessel following a traffic lane?

Negative correction

A sextant having an index error that is ON the arc has a _________.

A triangular topmark is composed of buoys marking the channels starboard side from seawafd while a cardinal topmark is marking the point of interest

How would you distinguish between a triangular topmark and a cardinal topmark?

3

When using GPS, how many theoretical position lines are required for a two-dimensional fix?

A prudent selection of fixed object along the channel

How would you show that parallel indexing is reliable while transiting a narrow channel?

A falling out of the traffic lane will indicate a cross track deviation

How would you describe a cross track distance is being maintained while transiting a congested water where available sea room is less?

A beaming line draw parallel to the original course with a known and fixed perpendicular distance between both the lines is used as reference

How would you maintain and follow a charted course while transiting a congested coastal waters?

7-8 tenths

What concentration range of ice corresponds to a close pack?

silvered on its half nearer the frame

The horizon glass of a sextant is ___________

5deg 30.0’ N

At the time of meridian passage the navigator observe the sun and the observe corrected altitude is 72deg 39’?

336 deg. 53 mins 00 secs

You are navigating on a course of 343 degrees True. A light buoy bearing course would you steer to pass 3 miles abeam of the light buoy leaving

It is 1200, 6 July

On 5 July, at 1200 zone time, you cross the 180th meridian steaming westward. What is your local time?

31°10.6’

What is the true latitude of star Pollux if the observed sextant altitude was 31dec 17.2’; index en, with the following apparent corrections; dip 6.8’ and refraction 1.6’?

29 deg 10.7’

The height of the observer eye is 14.0 meters; Dip 6.6’ and refraction 1.7’ the observer of the true altitude of star Dubhe if the index error is 2.8’ off the arc?

It is 1000, 7 July

On 6 July, at 1000 zone time, you cross the 180th meridian steaming westward. What is your local time?

13.5 nm

The Light List indicates that a light has a nominal range of 20 miles and is 20 feet (6 meters), at what approximate distance will you sight the light?

To improve safety

What is the objective of a Vessel Traffic System Operations?

Recommend an alternative action and if not followed relieve the Pilot.

A vessel is entering port and has a Pilot conning the vessel. The Master is unsure that the Pilot is taking sufficient action to prevent a collision. What should the Master do?

0.5

Ice concentration is measured in OKTA’s . What percentage of the sea surface is ice covered with 4 OKTA’s concentration

v-shaped ripple with the point of the V pointing downstream

A condition where two currents meet at a down stream end of a middle bar can be determined by a ___________.

0.5

What percentage of the sea surface is ice covered if the report says four (4) OKTA concentration?