Design of a cargo carrier of 2200 ton payload cargo in dhaka to chittagong route.

1. NAME338: SHIP DESIGN PROJECT & PRESENTATION
Under the Supervision of :
Dr. Nayeb Md. Golam Zakaria
Professor,
Dept. of Naval Architecture & Marine Engineering,
Bangladesh University Of Engineering & Technology (BUET).
Prepared By
Zahid Hasan………………..Roll:1512007
Rubayed Razib Suprov……Roll:1512031

2. PRESENTATION CONTENTS
 Owner’s Requirement
 Selection of Basis Ship
 Determination of Principal Particulars of
required Ship
 General Arrangement & Lines Plan
 Hydrostatic Calculations & Curves
 Scantling Calculations
 Midship Drawing
 Resistance
 Power calculation
 Engine selection & Engine foundation
 Rudder Design
 Propeller Design
 Shaft arrangement
 Rudder & steering arrangement
 Detailed Weight Calculation
 Stability Calculations & Curves
 Trim Calculation

3. OWNER’S REQUIREMENT:
Ship Type : Cargo(Inland)
Capacity : 2200 Tonnes(Payload-Cargo)
Speed : 10 Knot
Cargo Type : General Cargo
Route : Dhaka-Chittagong (Approx. 170 nautical mile)

4. Selection of Basis Ship
Length 75.00M,
Breadth 12.19M
Depth 5.00M
Draft 4.20m
Cargo Capacity: 2040 M.tons.
Power:2000BHP(YANMAR (6GL-UT))
Speed: 12 knots
Route: Inland & Coastal Area
CB …0.756

5. FINAL PARTICULAR OF DESIGN SHIP
Length Over All(LOA)………………………......83.98m
Length Between Perpendicular(LBP)……….78.30m
Breadth……………………………………………13.50m
Draft……………………………………................3.98m
Depth………………………………………………5.40m
CB …………………………………………………..0.758

6. General Arrangement of Required Ship

7. General Arrangement of Required Ship

8. Lines Plan

9. Offset Table
WL spacing = 0.995m Station Spacing = 7.89 m BTK Spacing = 1.68 m

10. Hydrostatic Calculation
WL
Position
of WL (m)
Displace
ment
(ton)
VCB (m)
LCB (m
from
amid-
ship)
TPC (ton) BMT (m) BML (m)
LCF (m
from
amidship)
MCTC (t-
m/cm)
Cb Cm
1 0.995 470.61 0.419 1.156 8.21 22.805 527.3 1.14 38.38 0.5 0.88
2 1.99 1385.41 1.208 1.121 8.928 9.016 242.218 1.047 46.6 0.685 0.9296
3 2.98 2274.15 1.743 0.886 9.532 5.42 178.64 -0.227 56.41 0.724 0.953
4 3.98 3270.32 2.24 0.43 9.772 4.23 132.781 -0.4864 60.3 0.758 0.9637

11. Hydrostatic Curve
Draft

12. SUMMARY OF SCANTLING
PLATE THICKNESS
Keel Plate 11 mm
Bottom Plate 8 mm
Bilge Plate 8 mm
Side Shell Plate 8 mm
Poop side deck Plating 7 mm
SHELL STRUCTURE
ITEMS DIMENSION
Center Girder T-575X100X10
Side Girder T-420X90X9
Floor plates T-575X75X7.5
Bracket 7 mm
Bilge radius 964 mm
BOTTOM STRUCTURE

13. SIDE STRUCTURE:
ITEMS DIMENSION
Web Frame T-120X80X12
Main Frame L -100X65X7
Side Stringer T -120X80X12

14. DECK STRUCTURE
ITEMS DIMENSION
Deck beams L-90X60X8
Deck Girder T-150X75X11
Deck Plate 15 mm

15. SUPER STRUCTURE
ITEMS DIMENSION
Poop Deck Beam L-104X60X6
Poop Deck Plate 7 mm
Plating of non exposed deck 4.5mm
Plating of front bulkhead 5 mm

16. MIDSHIP SECTION

17. MIDSHIP SECTION

18. LONGITUDINAL CONSTRUCTION

19. SHELL EXPANSION

20. LIGHTWEIGHT CALCULATION

21. LIGHTWEIGHT CALCULATION

22. DEADWEIGHT CALCULATION

26. Resistance & Power
Calculation
Resistance Calculation
Frictional Resistance, RF
84.24 KN
Appendage Resistance, RAPP
0.9434 KN
Wave Resistance, RW
9.44 KN
Model Ship Correlation Resistance, RA
10.155 KN
Additional Resistance Due to Bulbous Bow, RB
0 KN
Additional pressure resistance of
immersed transom stern, RTR
30.69 KN
Wind Resistance,Rwd 1.41 KN
Total Resistance, RT
136.87 KN

27. Power Calculation
Total Resistance RT 136.87 KN
Ship Speed Vs 10 Knot
Effective Power PE
704.586 KW
Wake Fraction w 0.1989
Form Factor 1+k1 2.645
Thrust Deduction
Factor
t 0.1487
Relative Rotative
effic.
ƞR 1.003
Shaft efficiency ƞs 0.98

28. Power Calculation
HULL
efficiency
Ƞh 1.063
propeller
efficiency
Ƞ0 0.43
Thrust Power Pt 828.53595 KW
Delivered
Power
Pd 1926.8278 KW
Break Power Pb 1966.1508 KW

29. Engine
Selection

30. Engine Foundation
Item Dimension
Thickness of top plating 41 mm
width of top plate 393 mm
Plate floors T- 575X90X6.5
Side girders T-555*250*16
Inner Bottom Plating 10 mm
Foundation bolts 75 mm
Floor plate thickness 13 mm
Longitudinal girders 18 mm
Web frame T- 180*90*12

31. Engine Room

33. PROPELLER
DESIGN
Number of Propeller 1 (Single Screw)
Number of Blades, Z 3
BAR 0.65
Diameter, D 1.938 m
P/D 0.785
Efficiency, η 0.43

34. Propeller Drawing

35. Propeller Drawing( 3D)

36. CAVITATION CHECK
• w= 0.1989, t= 0.1487,RT =136.97 KN
• We know,T=
𝑹
𝟏−𝒕
• Putting the values of R and t
• T=
𝟏𝟑𝟔.𝟗𝟕
𝟏−.𝟏𝟒𝟖𝟕
=160.89KN
• VA =VS (1-w) =10 (1-.0.1989) =8.01 knots=4.11
𝒎𝒔−𝟐
• Now,P0- PV =101325+3.8*1025*9.81
=138491 pa
Hence 𝐴_𝐸/𝐴_𝑂
=((1.3+0.3×3)×160×1000)/(139534.95×〖1.938〗^2
)+0.02=0.648
VR2=Va2 + (0.7 ×3.1416×𝑛×𝐷)2
=622.05
QT = 1/2×𝑝×𝑉R2
=318800 pa
Sigma(𝛼)=(𝑝−𝑝 )/𝑞= 138.34/318.80 = 0.4333
τC =(𝑇⁄𝐴_𝑃 )/(.5 ×𝜌×〖𝑉_𝑅〗^2)
=(160/3.2628×1000)/(0.5×1025×622.5)=0.153707

37. CAVITATION CHECK (using Burril Cavitation
Chart )
Designed Propeller propeller is operating in optimal region, below 5% back
cavitation.

38. Item Dimensions
Rudder Area 5.06 m2
Aspect ratio 2
Rudder Force 71.60 𝑘𝑁
Rudder torque 57.27 KN-m
Stock Diameter 140 mm
Coupling Bolt 38 mm(horizontal), 47 (vertical)
Rudder Scantling

39. Rudder Scantling
Coupling flanges 43mm
Rudder plate 7 mm
Rudder Web 5 mm
Rudder frames 600 mm(horizontal), 600 mm (vertical)
Pintle diameter 74mm
Bush 4 mm
Bearing thickness 22 mm

40. Rudder Drawing

43. Steering Arrangement
Item Dimensions
Sectional area of tiller 78.4 cm2
Tiller diameter 43 mm
Link Chain Diameter 55 mm
Steering Rod diameter 69 mm
Chain block of steering chain 880 mm

44. Steering Arrangement

45. Steering Arrangement

47. Shaft Arrangement
Item Dimensions
Shaft speed 345 rpm
Torque 54.80 kN
Stress 5.6x 107
Shaft Diameter 175mm
Twisting angle 3.40
Shaft liners 11mm
Coupling 35mm
Shaft bearing 3.7m
Stern Tube Bearing 438 mm(frwd),175mm(aft)
Diameter of flange coupling bolt 40mm

49. STABILITY CALCULATION

50. STABILITY CALCULATION

51. Trim Calculation
Final Draft of Vessel
Draft (aft) Draft (fore) Comment
Mean Draft
(m)
3.98 3.98
Trim by
Stern
Change in
Draft (m)
0.02 0.29
Final Draft
(m)
4.00 3.69