QUALIFICATION EXAM OOW MODULE - Adria Libar · 2018. 12. 12. · 26. Calculate moment of statical stability for ship with displacement D = 165 t which MG is 0.8 m at an angle of inclination

1

Candidate: ________________________________

1. Convert the courses and bearings

a) Compass bearing ωc = 163°, magnetic variation '09 = 1.8° (annual change 6' W), deviation = + 3.5 °.

Determine the azimuth true (true bearing) in 2018.?

b) True course = 001°, magnetic variation '12 = 2.4° (annual change 7' W), deviation = + 2.1°. Determine

course compass in 2018.?

c) Magnetic variation '11 = 4.3° W (annual change 7' E). Determine variation for 2018.

d) Compass bearing ωc = 003°, magnetic variation '12 = 1.8° W (annual change 4' W), deviation = -1.5 °.

Determine the azimuth true (true bearing) in 2018.?

e) Compass course = 301° Magnetic variation '02 = 2.4°E (5' W), dev = + 2.7 °. Determine course true in

2018.?

f) Magnetic variation '12 = 2.2° W (annual change 3' E). Determine variation for 2018.

g) True bearing ωT = 063°, magnetic variation '04 = 1.2° E (annual change ' W), deviation = -0.5 °. Determine

the azimuth compass (compass bearing) in 2018.?

2. Determine the position of a ship according to given data (MAP 5055)

a) Azimuth true ωT = 104.5°, distance d = 4.2 Nm, CAP GRIS-NEZ

b) Azimuth true ωT = 080°, distance d = 6.0 Nm, CAP d'Alprech

c) Azimuth true ωT = 260°, distance d = 7.2 Nm, DUNGENESS

d) Azimuth true ωT = 340°, distance d = 8.8 Nm, DUNGENESS

e) Azimuth true ωT = 267°, distance d = 7.9 Nm, DUNGENESS

QUALIFICATION EXAM OOW MODULE

2

3. a) 29.11. at 13:50 ships position is at true bearing 101.5° distance 1.7 Nm from south cardinal mark

(location of the mark buoy 51°03.7’ N 001°25.8’ E). Ship needs to cross the traffic separation scheme with

average speed 12 knots. Calculate assumed position, course through water, course over ground, and

determine true position using diamond M for drift.

b) 21.10. at 09:00 ships position is at true bearing 134° distance 1.0 Nm from south cardinal mark (location

of the mark buoy 51°03.7’ N 001°25.8’ E). Ship needs to cross the traffic separation scheme with average

speed 12.5 knots. Calculate assumed position, course through water, course over ground, and determine true

position using diamond M for drift.

c) 25.11. at 09:00 ships position is at true bearing 215° distance 2.0 Nm from south cardinal mark (location

of the mark buoy 51°03.7’ N 001°25.8’ E). Ship needs to cross the traffic separation scheme with average

speed 12.5 knots. Calculate assumed position, course through water, course over ground, and determine true

position using diamond P for drift.

d) 24.11. at 09:00 ship is traveling from position DUNGENESS true bearing 327° distance 4.4 Nm for 45

minutes with average speed 12 NM at true course 258°. Observing the DUNGENESS lighthouse for second

position at true bearing 052° distance 7.1 Nm. Calculate drift speed and direction.

e) 28.10. at 07:00 ship is traveling from position DUNGENESS true bearing 327° distance 6,0 Nm for 45

minutes with average speed 12 NM at true course 266°. Observing the DUNGENESS lighthouse for second

position at true bearing 043° distance 9.5 Nm. Calculate drift speed and direction.

Find course to steer from position 2 in order for ship to arrive at 50°36.6’ N 000°20.2’ E

3

4

4. Meaning of chart symbols?

a) b) c) d) e)

a)

b)

c)

d)

e)

5. If true course of own vessel is 120°, true course of other vessel is 267°, true bearing at other vessel 320°

calculate ship aspect and bow angle?

5

6. If true course of own vessel is 225°, true course of other vessel is 169°, true bearing at other vessel 120°

calculate ship aspect and bow angle?

7. List characteristics and differences between ECDISa, ENCa, SENCa, RCDSa?

8. Calculate latitude and longitude difference between two positions and what is the quadrant of the course

to steer?

φ (LAT)1 = 20°N

λ (LONG)1 = 160°E

φ2 = 30°S

λ2 = 150°W

_____________________________________________________________________________________

_____________________________________________________________________________________

9. Calculate latitude and longitude difference between two positions and what is the quadrant of the course

to steer?

φ1 = 10°S

λ1 = 020°E

φ2 = 30°S

λ2 = 030°W

_____________________________________________________________________________________

_____________________________________________________________________________________

6

10. Calculate time of high and low water and levels in the secondary port Richborough at date 22.11.

according to the attached tables and what will be the level of water at 11:00 am when the ship plans to enter

port and 18:00 when plans to depart?

If the draft of the ship is 3m, and the desired UKC is 1.5 m, when in the afternoon will be able to wade through

the shallows on the map reading depth 2m?

11. Calculate time of high and low water levels in the secondary port Richborough at date 18.10. according

to the attached tables and what will be the level of water at 06:00 am when the ship plans to enter port and

12:00 when plans to depart?

If the draft of the ship is 2.5m, and the desired UKC is 1.5 m, when in the afternoon will be able to wade

through the shallows on the map reading depth 2m?

TIME HEIGHT

STANDARD PORT HW LW HW LW RANGE 1 2 3 4 5

Seasonal change 6 6

DIFFERENCES 7 8 9 10

Seasonal change 11 11

SECONDARY PORT 12 13 14 15

Duration 16

7

8

12. Define the meaning of the numbered markings on synoptic chart?

9

13. Pick any state of European continent and describe weather forecast for following 24 hours?

10

14. In what quadrant can you expect strongest wind (white lines are isobars)?

15. Describe tropical cyclone and dangerous quadrant for sailing at north and south hemisphere.

16. Difference between true and relative wind?

11

17. Describe movement of particles of air in a) cyclone and b) anticyclone

a)

b)

18. Define points of stability on the image

a) Point M

b) Point B

c) Point G

d) Point K

12

19. List names of the basic ships movement

2 ____________________________

5 ____________________________

6 ____________________________

20. Define ship stability

21. Define longitudinal and lateral stability

22. Define dynamic and static stability of the ship

13

23. List three conditions of flotation and what floatation conditions ship complies when it is floating upside

down?

24. Metacentric height is measured from: ________

25. MG (GM) < 0 Define this situation

26. Calculate moment of statical stability for ship with displacement D = 165 t which MG is 0.8 m at an angle

of inclination φ = 6 degrees to starboard side.

27. Ship of D = 675 t displacement has angle of inclination φ = 4.29 degrees at port side, moments of static

stability are 168 tm/m. Calculate initial metacentre height (GM).

14

28. Unloading masses from ship

D initial = 600 t

KG = 2.2 m

XG = 16.7 m

LBP = 32 m

Unloading cargo 200kg, 35kg, 9kg, 33kg and 25kg as per table. Calculate the final KG and XG.

Mass (t) KG (m) VM = KG × mass XG (m) LM = XG × mass

600 2.2 16.7

0.2 1.2 12.1

0.035 1.3 5.2

0.009 2.5 4.3

0.033 1.0 16.8

0.025 0.6 22.6

KG =

XG =

15

29. What actions should ships A and B in the pictures perform?

a) b) c) d)

a)

b)

c)

d)

30. Sound signals for:

Turning to port ____________________________

Turning to starboard ____________________________

Moving astern _____________________________

Motor vessel underway, in restricted visibility ____________________________

16

31. State what kind of ship it is, what side of the ship you see according to images below:

17

32. Meaning of the abbreviations, what are they covering/regulating?

SOLAS

_____________________________________________________________________________________

_____________________________________________________________________________________

STCW

_____________________________________________________________________________________

_____________________________________________________________________________________

MARPOL

_____________________________________________________________________________________

_____________________________________________________________________________________

ISPS

_____________________________________________________________________________________

_____________________________________________________________________________________

ISM

_____________________________________________________________________________________

_____________________________________________________________________________________

COLREG’s

_____________________________________________________________________________________

_____________________________________________________________________________________

33. List some classification societies and what duties do they perform?

_____________________________________________________________________________________

_____________________________________________________________________________________

_____________________________________________________________________________________

_____________________________________________________________________________________

_____________________________________________________________________________________

_____________________________________________________________________________________

_____________________________________________________________________________________

18

34. Describe the entry of yachts in the register of yachts, the documentation, and proof of ownership?

_____________________________________________________________________________________

_____________________________________________________________________________________

_____________________________________________________________________________________

_____________________________________________________________________________________

_____________________________________________________________________________________

_____________________________________________________________________________________