Operations Management Marine Transportation and Logistics
AMAN DUBE
QA MBA , 4
Indian Maritime
India is the 20th largest maritime country in the world.
About 95% of the country’s trade by volume is moved through maritime transport.
The Indian peninsula, situated in the Indian Ocean, is also strategically located between the Atlantic Ocean in the west and the Pacific Ocean in the east and 12 major ports carrying 75% of port traffic and 148 operable minor and intermediate ports
Logistics and transportation Management
Time precedence-based MILP mathematical formulation To determine the assignment of cargos to ships and
define the optimal route that each ship should follow to maximize its profit.
The MILP-based model is then combined with an iterative algorithm in order to tackle large-scale problems involving a large numbers of ships, ports, and cargos.
The following notations are used in the proposed MILP-based formulation:
L (cargos); S (ships) P (ports) TTVs (total travel time for
ship s) tccs (time-charter cost per
unit time of ship s) LPp (cargos loaded in port
p) srl (revenue for cargo l) fcs (cost of fuel per unit
distance for ship s);
pcp,s (port cost for ship s at port p)
vmaxs (total carrying capacity of ship s in tonnes
TTDs (total distance travelled by ship s)
Xp,s (binary variable denoting that ship s visits port p).
Objective: To maximize Profit
Transportation Model
The following example can be used to demonstrate the formulation of the transportation model. Wheat is harvested in the Midwest and stored in grain elevators in
three different cities—Kansas City, Omaha, and Des Moines.
These grain elevators supply three flour mills, located in Chicago, St. Louis, and Cincinnati.
These costs are shown in the following table. For example, the cost of shipping one ton of wheat from the grain elevator at Omaha to the mill at Chicago is $7.
Northwest Corner Method
Management of Oil Spills: Aerial Surveillance and Monitoring Protective Booming Sand sieving
VMS
Voyage Schedule VMS (Vessel Monitoring
System) Voyage Report (Noon /
Arrival / Departure) Automatic Abstract Log
Function Analysis of Operation
Performance, ROB, Voyage Hour
Port Information
CASE-Capsize during loading
In US, while loading 3000gross tons, Ship capsized and sank alongside the dock
Observation – Error in calculating vessel’s stability and officer failed to make proper allowance while calculating vessel’s center of gravity
Root cause – Error in stability calculation
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