LEGEND: Blue = information provided. Red = table values, etc ...USCG 00436-NP-5 STEPS 1) SOLUTION: Given: Plot your bearings and ranges. The more accurate information provided are

USCG 00436-NP-5 STEPS

1)

SOLUTION:Given:

Plot your bearings and ranges. The more accurate information provided are the bearingson the lights rather than the ranges. Make your position determination accordingly.

At 0227, you take the following radar ranges and bearings:

Bartlett Reef Light 359° T at 2.4 miles Race Rock Light 083° T at 4.1 miles

What is your 0227 position?

Red = table values, etc.Green = ANSWER

Blue = information provided.Black = calculated values.

LEGEND:

The following questions are based on chart 13205TR, Block Island Sound, and the supporting publications.

Your vessel has a draft of 11 feet (3.4 meters). Your height of eye is 32 feet (9.7 meters). The gyro error is 2° W. Use 15° W variation where required.

Deviation Table

Terrestrial ObservationsChart Plot - Block Island Sound - Operational Level

HDG. MAG.000º 030º060º090º

HDG. MAG.120º150º180º210º

DEV.0º1º W2º W4º W

DEV.2º W1º W1º E2º E

HDG. MAG.240º270º300º330º

DEV.3º E3º E2º E1º E

00436-np-5.pdf Page 1 of 25 © Copyright 2009 - LAPWARE, LLC



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41° 14.1' N72° 08.2' W

Select the closest answer.

A) LAT 41° 14.5' N, LONG 72° 08.0' WB) LAT 41° 14.1' N, LONG 72° 08.2' W ANSWERC) LAT 41° 14.0' N, LONG 72° 08.5' WD) LAT 41° 14.3' N, LONG 72° 08.5' W



2)

SOLUTION:Given:

Laying down your course is NOT needed for this solution BUT might be needed later on.

True 087ºVar 15º W

Mag 102ºDev 003º WPsc 105º


A) 109° pscB) 105° psc ANSWERC) 102° pscD) 099° psc



LEGEND:

At 0227, you are on course 087° T at 10 knots. What course per standard magnetic compass should you steer to make good your true course?




3)

SOLUTION:Given:

Lay down your course of 087º T at a speed of 10 knots as stated in the previous question.Assuming you make good 9.3 knots over the ground, as stated, calculate your ETA atthe point your cross the COLREGS Demarcation Line.Estimated distance to run from 0227 is 3.65 miles.

Distance = Speed x Time

Time = Distance / Speed

Time = 3.65 / 9.3

Time = 0.3925 hours

Time = 23.5 minutes

0227.023.5

0250.5

0251



LEGEND:

You estimate that you are making 9.3 knots over the ground. At what time will you enter waters governed by the COLREGS?





LEGEND:

0251 ETA


A) 0258B) 0255C) 0251 ANSWERD) 0247



4)

SOLUTION:Given:Plot your bearing after looking up in the Light List the location of Latimer Reef Light.

INDEX Page 380



LEGEND:

At 0337, fog closes in and you anchor under the following radar ranges or bearing:

South tip of Watch Hill Point 3.0 miles East point of Fishers Island 1.4 miles Latimer Reef Light 331° T

What is the approximate depth of water at your anchorage?





LEGEND:

Remember to swing your radar range measured NOT from the light but from theend of the point of land.With your 0337 position laid down, determined your approximate waer depth.

NOTE that you are between the 90 and 120 feet depth contours.100 feet


A) 135 feet (40.9 meters)B) 120 feet (36.4 meters)C) 100 feet (30.3 meters) ANSWERD) 83 feet (25.2 meters)



5)

SOLUTION:Given:

Look up in your Coast Pilot 2 Fishers Island.

By 1015, visibility has increased to 5.0 miles and you can see Fishers Island. Fishers Island has __________.



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Page 139


A) sparsely wooded hills and is fringed with shoals to the south ANSWERB) sheer cliffs rising from the sea to a high, flat plateauC) barren, rocky hills with prominent sandy beachesD) low and sandy beaches with salt ponds and marsh grass



6)

SOLUTION:Given:

Your heading need not be plotted to solve this problem BUT it might be required inone of the next questions.

T 075º T E'ly heading, SSE wind sets you to the North.SS 3º Steer into the wind or to the RIGHT.T 078º TGE 2º W Apply Gyro Error to determine course pgc.G 080º Pgc


A) 080° pgc ANSWERB) 078° pgcC) 076° pgcD) 074° pgc

You get underway at 1030. The wind is out of the SSE and you estimate 3° leeway. What course should you steer per gyrocompass to make good a desired course of 075° T?



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7)

SOLUTION:Given:

Pgc 000.0º GTrue 357.5º T

GE 2.5º W

Shortly after getting underway, you sight Stonington Outer Breakwater Light in line with Stonington Inner Breakwater Light bearing 000° per gyrocompass. Which statement is TRUE?



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A) INCORRECT. No magnetic heading provided to determine Deviation.B) INCORRECT. Variation as stated in question 1 is 15º W.C) INCORRECT. With NO deviation determined how can compass error be calculated.

We could estimate Deviation based upon our 075º T heading to be 3º W with aVariation of 15º W we would get a Compass Error of 18º W.

D) CORRECT. Gyro Error is approximately 2.5º W based upon our True rangebearing and our observed bearing.


A) The deviation is 2° W.B) The variation is 2° E.C) The compass error is 16° W.D) The gyro error is 2.5° W. ANSWER



8)

SOLUTION:Given:

Plot your 1104 position. Lay down your course and speed. Calculate your distancerun from 1104 to 1110 where you change course and plot your 1110 DR position.Distance to run from 1104 to 1110 should be 1.0 mile.Determine your new heading to the position provided.


Distance = 10 x (1110 - 1104)

Distance = 10 x 6/60

Distance = 1.0 mile

At 1104, Watch Hill Point Light is in line with Stonington Outer Breakwater Light, the range to the south tip of Watch Hill Point is 2.6 miles and the range to the beach is 1.9 miles. You are steering to make good 075° T, speed 10.0 knots. At 1110, you change course to head for a position of LAT 41° 05.0' N, LONG 71° 50.0' W. What is the true course?



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LEGEND:

190.5°Select the closest answer.

A) 193°B) 190° ANSWERC) 187°D) 185°



9)

SOLUTION:Given:

Measure the distance from your 1110 position to the desired latitude and longitude provided in the previous question.

You should get 12.92 miles to run at an increased speed of 12 knots.



Time = 12.92 / 12

Time = 1.08 hours

Time = 1 h 05 m

1110105

1215 ETA


A) 1220B) 1215 ANSWERC) 1208D) 1157

At 1110, you increase speed to 12 knots. What is your ETA at the new position?



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10)

SOLUTION:Given:From your new position measure the distance to Montauk Point Light.It should be approximtely 1.3 miles.


A) 4.5B) 2.4C) 1.3 ANSWERD) 0.9

LEGEND: Blue = information provided.Black = calculated values.


Upon arrival at your new position you would expect Montauk Point Light to be approximately __________ mile(s) from your position.




11)

SOLUTION:Given:

Determine your 1345 position and lay down a course to Block Island Southeast Lightat 9 knots. Course should be 070° T but this is NOT necessary to solve the problem.Plot your 1430 position.Calculate your 1430 DR position and plot it.Determine, on the chart, your set and drift (current) encountered for the last45 minutes (1430 - 1345).

Distance = Speed x TimeDistance = 9 x 45 / 60Distance = 6.75 miles

Distance = 0.35 miles in 45 minutes orDistance = Speed x Time

Speed = Distance / TimeSpeed = 0.35 / (45/60)

Drift = 0.47 knotsSet = 193.4° T


A) Set 015°, drift 0.5 knotB) Set 195°, drift 0.7 knotC) Set 015°, drift 0.7 knotD) Set 195°, drift 0.5 knot ANSWER



LEGEND:

At 1345, you depart from a position 1 mile due east of Montauk Point Light and set course for Block Island Southeast Light at 9 knots. At 1430, your position is:

Latitude 41° 06.3' North Longitude 071° 41.9' West

What was the current encountered since 1345?





LEGEND:

Set = 193.4° TDrift = 0.47 knots



12)

SOLUTION:Given:

A) INCORRECT - You will approach too close to land but at a higher rate.B) INCORRECT - You will approach too close to land.C) INCORRECT - You will approach too close to land but at a slower rate.D) CORRECT - Steer to the right to stay well clear of Southwest Ledge.


A) Continue on the same course but increase speed.B) Continue on the same course at the same speed.C) Slow to 8.3 knots to compensate for the current.D) Alter course to the right, to pass well clear of Southwest Ledge ANSWER

You are encountering heavy weather. What action should you take based on your 1430 fix?



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13)

SOLUTION:Given:

13

At 2100, you set course of 000° T, speed 10 knots from LAT 41° 07.0' N, LONG 71° 30.0' W. Visibility is 5.5 n.m. What is the earliest time you can expect to sight Point Judith Light? (Use charted range of 20 miles as nominal range.)



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On the chart plot your 2100 position, lay down your course and speed.

Using your Luminous Range Diagram, enter with 20 miles nominal range, as providedin the question, and go up to your 5.5 miles visibility. Pick off on the righta distance from the light that it will be visible of 13 miles.

On the chart, measure a distance of 13 miles from the light where it intersectsyour heading. Measure the distance from your 2100 position to this intersectionand you should get about 2.05 miles.



Time = 2.05 / 10

Time = 0.205 hours

Time = 12.3 minutes

210012

2112 ETA at a point where the light is visible


A) The light is visible at 2100.B) 2106C) 2111 ANSWERD) 2123



14)

SOLUTION:Given:On the maneuvering board, from the center of the plot draw your vessels courseand speed. Also, from the center of the plot lay down your set and drift.From the end of your set and drift draw a line to the end of your course and speed.This line, paralleled to the center of the plot is your course to steer and speed to turn to make good your desired course and speed.

You estimate the current to be 160° T at 1.2 knots. What should your course and speed be in order to make good 000° T at 10 knots?



LEGEND:


160° T1.2 kts.

CTS and STT measured from the end of your set and drift to your desired CMG and SMG

CMG 000° TSMG 10 kts.

Course To Steer358° T

Speed To Turn11.2 knots




LEGEND:


A) 358° T at 09.8 knotsB) 358° T at 11.1 knots ANSWERC) 002° T at 11.2 knotsD) 002° T at 09.9 knots



15)

SOLUTION:Given:


A) 13219 ANSWERB) 13217C) 13209D) 13205

If you want to put into Point Judith Harbor of Refuge, what chart should you use?



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Documents

LEGEND: Blue = information provided. Red = table values, etc ...USCG 00436-NP-5 STEPS 1) SOLUTION: Given: Plot your bearings and ranges. The more accurate information provided are