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DO 20 J=1,7 REFF(J)=1+((J‐1)*1.5/6.0) YDEL(J)=CLR*REFF(J) YVR(J)=‐YDEL(J) YRR(J)=XRR*YDEL(J) NDEL(J)=‐XRR*YDEL(J) NVR(J)=XRR*YDEL(J) NRR(J)=‐XRR**2*YDEL(J) DO 30 K=1,7 SEFF(K)=(K‐1)/2.0 YVS(K)=‐CLS*SEFF(K) YRS(K)=‐XSS*YVS(K) NVS(K)=‐XSS*YVS(K) NRS(K)=XSS**2*YVS(K) NV(I,J,K)=NVT(I)+NVR(J)+NVS(K) NR(I,J,K)=NRT(I)+NRR(J)+NRS(K) YV(I,J,K)=YVT(I)+YVR(J)+YVS(K) YR(I,J,K)=YRT(I)+YRR(J)+YRS(K) S(I,J,K)=(NR(I,J,K)/(YR(I,J,K)‐M))‐(NV(I,J,K)/YV (I,J,K)) RAD(I,J,K)=(L*((YV(I,J,K)*NR(I,J,K))‐(NV(I,J,K)* (YR(I,J,K) $ ‐M))))/(DEL*((NV(I,J,K)*YDEL(J))‐(YV(I,J,K) *NDEL(J)))) WRITE(1,5)TR(I),REFF(J),SEFF(K),YR(I,J,K),NR (I,J,K) $ ,YV(I,J,K),NV(I,J,K),S(I,J,K),RAD(I,J,K) 5 FORMAT(1X,F5.2,2X,F5.2,2X,F5.2,X, F6.3,2X,F6.3,2X,F6.3,2X $ ,F6.3,2X,F6.3,2X,F8.3 30 CONTINUE 20 CONTINUE 10 CONTINUE STOP END MIMET Technical Bulletin Volume 1 (2) 2010 Ship’s Data The above program was run based on the following ship’s input data as shown in Table 2; Table 2: Ship’s input data Distance of rudder center from Longitudinal Centre Gravity (LCG), a 50m aft of LCG Distance of skeg center from LCG, b 45m aft of LCG Length between Perpendiculars (LBP), L 115m Draught, T 3.92m Longitudinal position of the centre of buoayancy, LCB ‐5.0m Density, ρ 1.023 tonnes/m 3 Trim, t ‐0.5m < t < 1.0m Rudder Effectiveness, Reff 1.0 < (δCL/δα)r < 2.5 Skeg Effectiveness, Seff Non‐dimensionalised first derivative of sway force of the 0.0 < (δCL/δα)s < 3.0 bare hull with respect to sway Y � v0 velocity, Non‐dimensionalised first derivative of sway force of the ‐0.00495 bare hull with respect to turning 0.000973 rate, Y � r0 Non‐dimensionalised first derivative of yaw moment of the bare hull with respect to sway velocity, N � v0 Non‐dimensionalised first derivative of yaw moment of the bare hull with respect to N � r0 ‐0.00165 ‐0.000754 rate of turning, Rudder effectiveness factor, (δCL/δα)r 0.00045 Skeg effectiveness factor, (δCL/ δα)s (δCL/δα)r/2 Displacement 3708 tonnes | MARINE FRONTIER @ UniKL 9
Computation Output Extracts from the computation output based on the ship’s data input for t = ‐0.5, 1.0 < Reff < 2.5 and 0.0 < Seff < 3.0 are given below; Skeg Effectiveness Skeg Effectiveness 3.5 3 2.5 2 1.5 1 0.5 0 MIMET Technical Bulletin Volume 1 (2) 2010 Skeg Effectiveness 3.5 3 2.5 2 1.5 1 0.5 0 3.5 3 2.5 2 1.5 1 0.5 0 Directional Stability t=-0.5, Reff=1.5 -0.057 -0.034 -0.012 0.009 0.03 0.051 0.072 Directional Stability Criteria (a) Directional Stability t=-0.5, Reff=1.75 -0.032 -0.01 0.012 0.033 0.054 0.074 0.095 Directional Stability Criteria (b) Directional Stability t=-0.5, Reff=2 -0.008 0.014 0.035 0.056 0.077 0.097 0.118 Directional Stability Criteria (c) | MARINE FRONTIER @ UniKL 10
Page 2 and 3: EDITORIAL CHIEF EDITOR Prof. Dato
Page 4 and 5: DIRECTIONAL STABILITY ANALYSIS IN S
Page 6 and 7: The determinant from equations (3)
Page 8 and 9: Table 1 ‐ Results of Stability Cr
Page 12 and 13: Skeg Effectiveness Skeg Effectivene
Page 14 and 15: Skeg Effectiveness Skeg Effectivene
Page 16 and 17: A WATER FUELLED ENGINE FOR FUTURE M
Page 18 and 19: Stainless steel pipes are used as e
Page 20 and 21: Current development Hydrogen Oceanj
Page 22 and 23: Car industry A small group of local
Page 24 and 25: Big oil companies. For business sur
Page 26 and 27: Websites: 1. http://www.schatzlab.o
Page 28 and 29: Table 1: Global maritime Fleet Rank
Page 30 and 31: No. of Ships No. of Ships 300 250 2
Page 32 and 33: time players is 30. The demand for
Page 34 and 35: References [1] UNCTAD, Review Marit
Page 36 and 37: Table 3 : Tug boat Registered in Ma
Page 38 and 39: NO SHIP NAME OWNER/OPERATOR GRT DWT
Page 42 and 43: MIMET Technical Bulletin Volume 1 (
Page 54 and 55: Table 8 : Tankers Registered in Mal
Page 58 and 59: Table 10: Passenger Ship Registered
Page 60 and 61:
NO SHIP NAME OWNER/OPERATOR GRT DWT
Page 62 and 63:
Table 11: Container Ships Registere
Page 64 and 65:
age and appropriate steps must be t
Page 66 and 67:
tends to oxidize rapidly, even at a
Page 68 and 69:
oxide or other anti‐oxidant addit
Page 70 and 71:
MIMET Technical Bulletin Volume 1 (
Page 72 and 73:
METHODOLOGY Description of Apparatu
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Preparation and procedure for Mecha
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Objective of the Research The resea
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Figure 2.1: LNG Trade Volume 1998,
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Mean Median Table 3.1: Carrier Aspe
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From the result in Table 3.1, it sh
Page 84 and 85:
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adversely affecting ship operations
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distributed system and other equipm
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Knowledge based system is a compute
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Again Butler and Sarma [28] put for
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particle swarm optimization (PSO)[1
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MI [27] Butler, K. L, Sarma, N.D.R.
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Positive transformation from its tr
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mutually exclusive, but rather comp
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Table 2. Measurements for Integrity
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Table 5. Measurements for Excellenc
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have become a major issue without m
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used to model the pneumatic transmi
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Figure 2: Transmission Line Diamete
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PDE equations (1) and (2). Comparis
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Since chemical products have high p
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Figure 6: Enclosed life boat with s
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UNIKL MIMET AND ALAM SHIP MANAGEMEN
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