Workshop - Best of Both Worlds_ Combine KG and Vector search for enhanced R...
Optimal routing development based on real voyage data presented by_sewonkim
1. 2017.Nov.2
Korea Japan Smart ship Joint Session
Optimal Routing Development
Based on Real Voyage Data
DSME/KMA/HMM
S.W.KIM, J.W.CHOI, H.R.PARK, D.J.JUNG, S.S.Byeon, H.M.EOM
SNAK Smart-Ship Joint Session
NOV.2017.2ND
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2. Takeaway
▪ The state of art:AutonomousVessel
▪ A Key Challenges : Routing Optimization
▪ Our Approach
▪ Realistic Environment Modeling
▪ Precise Performance Estimation
▪ Power Comparison based on RealVoyage Data
▪ Case Study: East Bound Container
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5. 2017.Nov.2
Korea Japan Smart ship Joint Session
Future is already here
- Global movements for developing autonomous ship-
ABS ROYAL NAVY
MUNIN,AAWAI,YARA:2019
MUNIN : Maritime Unmanned Navigation Intelligence in Networks
AAWAI : Advanced AutonomousWater-bone Application Initiative
JAPAN : NYK plant to launch Autonomous Container Carrier to 2019
CHINA : Shipyard – Shipping Industry – Research Institute Alliance
US : Remote OSV operation completed in 2017
Korea
NYK 201
CHINESE 2020NAVY Korea
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6. Why Autonomous?
25% of CAPEX
20% of OPEX
Training Cost
96 % Ship Collision1)
PiracyVictim
1) Dr. Rothblum, Human Error and Marine Safety, USCG, 2012
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13. • Resistance
• Wind
• Wave
Increasing
Power
Consumption
13
Major Factors of
Power Consumption
14. Increased Power
_
_
, ,
, ,
: , ,
:
:
calm wave added wind
calm wave added wind
Power R U R U R U UT
R R R
Calm Water Wave Added andWind Resistance
U Vessel Speed
Vessel Heading Angle
T VoyageTime
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16. Case Study : HMM Hope
LPP: 349.5m
Breadth:48.4m
Draft:14m
Volume : 162517 m3
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17. Target : fromYokohama to Sanfrancisco
Period: June 1ST 2016TO JUNE 10TH 2016
Great Circle Distance : 8,206 km
Yokohama San Francisco
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18. Routing Optimization Problem
_
_
,
, ,
:
, , : , ,
:
:
calm wave added wind
calm wave added wind
Object to minimize FOC
where
FOC R U R U R U UT SFOC
FOC Fuel Oil Consumption
R R R Calm Water Wave Added andWind Resistance
U Vessel Speed
Vessel Heading Angle
T VoyageTime
SF
: ( / )
: , , ,
OC Specific Fuel Oil Consumption ton kwh
Suject to VoyageTime Ta rget Position Speed Range Heading Angle Range
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19. Optimization Algorithm: Iterative DP
A method for solving complex optimization problem by breaking it down
into a collection of simpler sub-problems using the iterative calculation
based the back propagation optimum theory.
Concept Diagram 19
20. Routing Optimization Procedure
1) Divide WholeVoyage Routes into Unit Step
2) Load Ship/Weather/Voyage Data
3) Create Speed and Heading Command Seeds
4) Find Optimum which has Minimal Fuel Oil Consumption
• Calculate FOC based on Estimated Power
(Total Resistance)
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21. Calm Water Resistance
Calm Water Resistance due to Speed
21 22 23 24 [Knot]
:calmR Calm Water Resistance
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_ , ,wave addca inl e w dm dPower R U R UR UTU
22. Wind Load Estimation
2 2
0.5 0.5 0wind A AA WR T WR A AA L GR C A V C A V
ρA : Air Density
VWR /ψWR : Relative Wind Speed and Direction
AT / VG : The Projected Area and Advancing Speed of the Ship
CAA : Wind Load Coefficients
Wind Load Coefficients : CAA 22
_ ,,calm wave adde windd RPower R U UR U UT
23. Wave Added Resistance
viaWish SNU
Mean Drift Force Estimation based on Potential Theory due to various
Speeds and Drafts
Strip Model RANKINE Panel Model
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_ ,,wave addcal inem w ddPower R U R U UR TU
24.
_ 2
0
,
,wave added
A
QTF
R E d
ω, α, and ζA : Frequency, Direction, and Amplitude of the Wave
E(ω,α): The wave spectrum.
Wave Added Resistance
ModelTest under Irregular Waves
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27. Time
Position data
Latitude (radians & degrees)
Longitude (radians & degrees)
Environmental data
Wave height (m), wave period (seconds)
Wave direction (degrees)
Wind speed (knots)
Wind direction (degrees)
Ship data
Speed over ground (knots)
Longitudinal water speed (knots)
Draft Aft, Fwd (m)
Trim Dynamic (m)
Propulsion RPM (rpm)
Propulsion Power (kW)
Propulsion Torque (Nm)
Rudder Angle (degrees)
RealVoyage Data from HMM
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30. Conclusion
▪ The optimal FOC routing was conducted by DSME, HMM, and KMA.
▪ The model test results (calm water, wave added, and wind resistance) were
considered to estimate the power increase.
▪ The measured power and the estimated power were compared based on
real voyage data.
▪ The 4% FOC reduction was achieved compared to great circle on eastbound
route for 13.1K container carrier on June 2016.
▪ Lesson Learned :
:A precise performance estimation is a crucial factor for the optimal routing
▪ Next Goal
: Hydrodynamic performance analysis integration
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