ghid proiect: cargoplan- calcul practic de stabilitate si...

UNIVERSITATEA MARITIMĂ

DIN CONSTANŢA

COD: UMC_PD_06_F2

DATA APLICĂRII: 05.12.2014

ED.1 REV.2 PAG 1 DIN

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Titlul Disciplinei din Planul de învățământ: Teoria și Tehnica Transportului Maritim I

GHID PROIECT: CARGOPLAN- Calcul Practic de Stabilitate si

Asieta Noel-Mircea ZUS

Cuprins

P1. Grija față de marfă (2 ore)

P2. Calcularea cantității de marfă (2 ore)

P3. Planul de stivuire (2 ore)

P4. Calculul de amaraj (2 ore)

P5. Calculul de asieta (2 ore)

P6. Calculul de stabilitate (2 ore)

P7. Verificare proiect (2 ore)

OBIECTIVELE PROIECTULUI – CARGOPLAN – Calcul Practic de Stabilitate si asietă

La sfârşitul proiectului cursanţii vor cunoaşte modalitatea de încărcare în

siguranță a unei nave maritime, conform reglementărilor internaționale:

Înţelegerea grijei față de marfă

Familiarizarea cu documentația de încărcare a unei nave reale

Utilizarea convețiilor internaționale ce reglementeaza încărcarea și transportul de mărfuri

Calculul cantității de marfă încărcate

Întocmirea unui plan de stivuire

Efectuarea practică a calculelor de amaraj, asietă și stabilitate

TTM – GHID PROIECT

2

Teoria si Tehnica Transportului Maritim

Utilizing the individual data received (cargo name, SF – stowage factor and cargo unit

dimensions), design the initial cargo plan for multipurpose ship Vectis Castle.

Example:

Loading condition: SF = 1.75m3/t,

Cargo: potatoes in crates

Dimensions:1.2m*1.8m*1.15m (breadth*length*height)

The project should follow the next steps:

1. Cargo properties:

From Thomas Stowage :

Start with part3 Commodities, about your specific type of packaging in part2 read

about Systems and Techniques, and about your specific cargo type read part1 Safety, part4 Damage

and Claims (those applicable to your cargo) and part5 Procedures. If it’s necessary get the related

information from IMDG Code also.

2. Stowage planning:

Read “S2_PRE STOWAGE PLANNING.pdf” about general information related to

proper stowage of cargoes and for any misunderstood terms.

From the ship Plans (General Arrangement etc. :STABILITY LOADING

MANUAL.pdf at the end) take out the cargo holds dimensions.

At a proper scale draw the cargo distribution onboard ship:


DIN CONSTANŢA

COD: UMC_PD_06_F2



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3. Displacement calculation

Before doing any computations familiarize yourself with the ship stability booklet, general

informations being found in the first three chapters of 004_STABILITY_LOADING_MANUAL.pdf.


4


In order to compute the position of the center of gravity of the ship and it’s

displacement use the template provided in 6.5. Calculation template for draft, trim and stability.

First you find out the weight and center of gravity of the cargo and dunnage from

stowage plan, link those dimensions to the positions of the bulkheads in the ships plans and compute

the Total CARGO and it’s center of gravity:

Position weight VCG

MomBL/

Vmom LCG

MomAP/

Lmom TCG MomCL/Tmom I FSM

CH1FL 208.2 3.63 755.766 101.67 21167.694 0 0

CH1FU 208.2 9.61 2000.802 101.67 21167.694 0 0

CH1AL 485.9 3.63 1763.817 89.2 43342.28 0 0

CH1AU 485.9 9.61 4669.499 89.2 43342.28 0 0

CH2L 1990.1 3.63 7224.063 52.07 103624.507 0 0

CH2U 2210 9.61 21238.1 48.82 107892.2 0 0

CARGO 5588.3 6.74 37652.05 60.94 340536.66 0 0

To the weight of the cargo, to find out the actual Displacement of the ship you

should add up the other weights onboard that vessel, starting with the lightship. The information is

found in chapter 14. Consumables - Departure, and for the crew and effects and provisions

information you need to look them up in the standard loading conditions, ch.15.

lightship

3660 8.7 31842 51.15 187209 0.4 1464

TD

269.6 6.97 1879.112 63.24 17049.504 0 0

Provisions

2 12 24 12 24 0 0

Crew&Eff

10 11 110 4.2 42 0 0

HFO

241.7 4.25 1027.225 19.59 4734.903 -0.72 -174.024

55.2

MDO

193 4.64 895.52 18.34 3539.62 -0.96 -185.28

67.7

FW

69.6 5.98 416.208 5.69 396.024 0 0

87.9

LO

17.7 6.99 123.723 13.76 243.552 2.86 50.622

2.3

Misc

18.3 4.78 87.474 24.44 447.252 1.69 30.927

96.5

For the data about TD – tween deck – ch. 8.2 Tweendeck particulars

Displacement 10070.2 7.35 74057.31 55.04 554222.51 0.12 1186.245

321.4

Adding up all the weights we obtain the Displacement of the ship and with the moment theorem we

compute the coordinates of the center of gravity.


DIN CONSTANŢA

COD: UMC_PD_06_F2



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4. Trim

Using the 6.5. Calculation template for draft, trim and stability the first correction

we should think about is the list correction. We distribute ballast onboard in such a manner that the

TCG of the ship is 0, so the ships’s list is 0 (4.1 Calculation of static angle of heel). Ballast

information can be easily found in TANK ARRANGEMENT.pdf.

Ballast 12 WT PS 66.5 3.29 218.785 90.09 5990.985 -7.68 -510.72

5.9

16 WT PS 87 3.36 292.32 79.39 6906.93 -7.8 -678.6

5.9

The new Displacement of the ship is:

Displacement 10223.7 7.29 74568.41 55.47 567120.43 0.00 -3.075

321.4

Using the new displacement we compute the trim of the ship, initial for t=0, and after for interpolated

values for the actual trim of the ship like in 6.6. Calculation template for draft, trim and stability.

d D MCT LCB

6.45 10877 157.77 60.65

trim -3.69

6.11 10223.7 151.03 60.92

6.5 10973 158.76 60.61

0.05 96 0.99 -0.04

-0.34 -653.3 -6.74 0.27

The trim should be in the interval -1.2…-1.4m (by aft). If the condition is not fulfilled just add

more ballast:

Position weight VCG

MomBL/

Vmom LCG

MomAP/

Lmom TCG MomCL/Tmom I FSM

12 WT PS 66.5 3.29 218.785 90.09 5990.985 -7.68 -510.72 5.9

16 WT PS 87 3.36 292.32 79.39 6906.93 -7.8 -678.6 5.9

1 FP 193 5.46 1053.78 116.95 22571.35 0 0 0

2 DT PS 98.5 4.12 405.82 109.15 10751.275 -2.409 -237.287 0

3 DT SB 98.5 4.11 109.27 10763.095 2.409 237.2865 45.8

6 wt ps 114.6 6.1 699.06 104.28 11950.488 -5.44 -623.424

7 wt sb 114.6 6.1 699.06 104.28 11950.488 5.44 623.424

4 db ps 43.9 0.67 29.413 101.1 4438.29 -3.4 -149.26

5 db sb 43.9 0.67 29.413 101.1 4438.29 3.4 149.26


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Displacement 10930.7 7.09 77484.96 58.92 643983.70 0.00 -3.075

321.4

d D MCT LCB

6.45 10877 157.77 60.65

trim -1.18

6.48 10930.7 158.32 60.63

6.5 10973 158.76 60.61

0.05 96 0.99 -0.04

0.03 53.7 0.55 -0.02

Finally take out from the ch.10 hydrostatic particulars the draft at midship and we compute the drafts

forward and aft:

d t LCF

6.42 -1.5 58.36

6.43 -1.18 58.86

6.44 -1 59.14

0.02 0.5 0.777032468

0.01 0.32 0.50

daft 7.02

dfore 5.84


DIN CONSTANŢA

COD: UMC_PD_06_F2



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5. Stability

For Initial stability we start the computation as per: 6.5. Calculation template for draft, trim and

stability, the KMT is obtain by interpolation from ch.10 hydrostatic particulars for the real trim of the

ship.

G'M 0.50

>0.15m

For the damage stability we have to compare the VCG’ of the ship (corrected for the influence of the

free surfaces in tanks) with the maximum allowable VCG’, as per 5. Notes on the use of tables of

maximum VCG, and the actual values tabulated in 13. Tables of maximum VCG, for the No Deck

Cargo information.

If either the initial stability of the ship condition, or the damage stability one is not fulfilled, then we

should keep decreasing the VCG of the ship by adding ballast and restart the computation for trim and

drafts.

To draw the GZ curve (on milimetric paper) the information about computation method is found in

ch.4. How to use the cross curves, and the actual values that you have to interpolate in ch. 11. Cross

curves.

KN

0.0

00

0.26

6

0.66

7

1.33

5

1.60

3

2.00

7

2.68

7

3.37

9

4.09

2

4.78

7

5.39

8

6.38

0

6.95

3

VCG's

inthe 0

0.24

842

0.62

0388

1.23

6054

1.47

9947

1.84

2313

2.43

4551

3.00

826

3.55

9075

4.08

2803

4.57

5458

5.45

2819

6.16

4499

GZ

0.0

00

0.01

8

0.04

6

0.09

9

0.12

3

0.16

5

0.25

2

0.37

0

0.53

3

0.70

5

0.82

3

0.92

7

0.78

9

theta 0 2 5 10 12 15 20 25 30 35 40 50 60

To finally verify the stability criteria as per IMO Resolution MSC.267 (85) the information is in ch.

6.1 General stability criteria:

A The area under the GZ curve up to 30° shall not be less than 0.055 metre-radians.

B The area under the GZ curve up to X° shall not be less than 0.090 metre-radians.

C The area between 30° and X° shall not be less than 0.03 metre-radians.

X 40° or any lesser angle at which the lower edge of any openings in the hull, superstructure or

deckhouse, which cannot be closed weathertight, immerse.

E The righting lever GZ shall be at least 0.20 m at an angle of heel equal to or greater than 30°.

The maximum GZ shall occur at an angle of heel not less than 25°.

F The Initial G’M shall not be less than 0.15 m.


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Additional Information: Attach to the project the Essay relate d to

individual IMDG cargo UN ____, as per a safety briefing for your

deckhands.

Extra work:

6. Wind criterion

Verify as per 6.2. Wind criterion according to IMO resolution A749

7. Lashing

According to the CARGO SECURING MANUAL.pdf and CSC Code, compute the lashing

requirements of 10 units on cargo stowed on deck. As per ch 3.2 Evaluation of forces acting on cargo

units.


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COD: UMC_PD_06_F2



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EXEMPLU:


10



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COD: UMC_PD_06_F2



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12



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COD: UMC_PD_06_F2



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14



DIN CONSTANŢA

COD: UMC_PD_06_F2



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Bibliografie:

1. International Convention on Standards of Training, Certification and Watchkeeping for Seafarers (STCW), 1978, as amended

2. International Convention for the Safety of Life At Sea (SOLAS) Consolidated Edition, 2009

3. IMO Standard Marine Communication Phrases (IMO SMCP) 2005 Edition 4. International Convention for the Prevention of Pollution from Ships 1973/78

(MARPOL) Consolidated Edition, 2011 5. International Maritime Dangerous Goods Code, (IMDG Code) 6. IMO Dangerous Goods labels, marks and signs, 2008 Edition 7. Medical First Aid Guide for Use in Accidents Involving Dangerous Goods,

(MFAG) 8. Emergency Procedures for Ships Carrying Dangerous Goods, (EmS) 9. Code of Safe Practice for Ships Carrying Timber Deck Cargoes (TDC Code),

2011 10. Assembly Resolution A.288 (VIII) - Recommendation on the Safe Stowage and

Securing of Containers on Deck on Vessels Which Are Not Specifically Designed and Fitted for the Purpose of Carrying Containers

11. Assembly Resolution A.489 (XII) - Safe Stowage and Securing of Cargo Units and Other Entities in Ships Other Than Cellular Container Ships

12. Assembly Resolution A.533 (13) - Elements to Be Taken Into Account When Considering the Safe Stowage and Securing of Cargo Units and Vehicles in Ships

13. Assembly Resolution A.581 (14) - Guidelines for Securing Arrangements for the Transport of Road Vehicles on Ro-Ro Ships

14. Code of Safe Practice for Cargo Stowage and Securing (CSS Code) (2011 Edition)

15. International Convention for Safe Containers (CSC), 1972 (2014 Edition) 16. Code of Safe Practice for the carriage of cargoes and persons by Offshore

Supply Vessels (OSV Code) (2000 Edition) 17. Revised recommendations on the safe transport of dangerous cargoes and

related activities in port areas (2007 Edition) 18. Guidelines for the Preparation of the Cargo Securing Manual (2010 Edition) 19. Ballast water management convention and the guidelines for its

implementation (2009 Edition) 20. International Convention on Load Lines (1966 LL Convention), 2005 Edition 21. WHO International Health Regulations (1969), 3rd annotated ed. (Geneva,

World, Health Organization, 1983) 22. International conference on space requirements for special trade passenger

ships, (SPACE STP 1973) 1973 Edition 23. Athens convention relating to the carriage of passengers and their luggage by

sea, 1974 (PAL 1974) 2003 Edition 24. International Convention on Tonnage Measurement of Ships, 1969, 1970

Edition 25. International safety management code (ISM Code) and guidelines on

implementation of the ISM code (2010 Edition) 26. International code on intact stability, 2008 (2009 Edition) 27. Prevention of corrosion on board ships (2010 Edition) 28. Procedures for port state control (2000 Edition) 29. Bryan Barrass & Capt D R Derrett, Ship Stability for Masters and Mates, 6th ed.

London Stanford Maritime Butterworth Heinemann, 2006 30. Hill, C. Maritime Law, 6th ed. London, LLP Limited Lloyd’s of London Press,

2003


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31. Lavery, H.I. Shipboard Operations, 2nd ed. London, Butterworth Heinemann, 1993

32. Taylor, D.A. (Dr.) Merchant Ship Construction, 4th ed. London, Butterworth, Institute of Marine Engineers, 1998

33. Taylor L.G. Cargowork, 12th ed. Glasgow, Brown, Son & Ferguson Ltd. 1992 34. Cpt Thomas R.E., revised & rewritten by Rankin, K.S. Stowage, Cpt G M

Pepper, Thomas’ Stowage: The Properties and Stowage of Cargoes, 5th ed.Glasgow, Brown, Son & Ferguson, 2008

35. Capt P. Roberts, Watchkeeping Safety and Cargo Management in Port. London, The Nautical Institute, 1995

36. Maritime and Coastguard Agency (MCA), Code of Safe Working Practices for Merchant Seamen, London. The Stationery Office Publications Centre, Consolidated Edition, 2009

37. Kuo. Chengi., Safety Management and its Maritime Application, The Nautical Institute, London, 2007

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