W2_DI_VESSEL SLOW SPEED ANALYST

1.     Problem recognition, definition and evaluation

In order to meet national energy needs and supply chain of fuel in archipelago country, vessels with good performance is totally needed. One of performance components that contained in vessels KPI is called “Slow Speed Compliance” which is measure by comparison between actual speed and agreed speed. However in day to day operation, slow speed could happen to any type of ships. It’s important to figure out the main cause of slow speed.

Problem statement: What is the main cause of slow speed?

 

2.      Development of the feasible alternatives

There are some conditions that make vessels have slow speed, as follows:

·         Bad weather condition (examples: rough sea, strong wind & current)

·         Poor condition of main engine which is the main propulsive force of ship.

·         Lag of operations (examples: ignore or wrong procedure & human errors)

·         Route selection

·         Ship design errors

3.     Development of the outcomes

To find the main cause of problem, we need to collect all related data from vessel report and shore report. Various reports that we use are:

·         Ship Performance Report (SPR):

Performance report that contain of all KPI component of Ship such as: speed, pumping rate, transport loss, and bunker consumption which reported every voyage or call for each vessels.

·         Noon report (daily vessels report)

·         Shore base claims

Report of every performance that not suitable or not complied with agreement.

     Recapitulation of the data shown in the table below:

No	Causes of Problem	Frequency	Frequency Cumulative	Percentage	Percentage Cumulative
1	Bad weather	17	17	34.0%	34.0%
2	Poor  Main Engine performance	16	33	32.0%	66.0%
3	Lag of operations	10	43	20.0%	86.0%
4	Route selection	6	49	12.0%	98.0%
5	Ship Design errors	1	50	2.0%	100.0%
	TOTAL	48		100%

Figure 1. Data collection (source: author)

4.     Analysis and comparison of the alternatives 
       We apply cause of the problem into Pareto Chart below with cause of problem in x axis and number of  frequency in y axis.

5.     Selection of the preferred alternative

Base on Figure 2 - Pareto Chart, show the highest frequency that cause slow speed is bad weather with 17 point. But, Bad Weather is comes from natural phenomenon that means it is totally out of our control, so we will focus on the second option shown in Pareto Chart which is the poor main engine performance (16 Point).  

6.     Performance Monitoring & Post Evaluation of Result

We can conclude that poor main engine performance is the main cause of slow speed in vessels. After we understand the main cause, the next blog posting will be talk about how to solve or improve M/E performance.

 

Reference: 

         i.      Brassard, M. & Ritter, D. (2010). The Memory Jogger 2: Tools for Continuous Improvement and Effective Planning, pp. 122-135.

       ii.      Pareto Chart template, retrieved from:

http://www.vertex42.com/ExcelTemplates/pareto-chart.html

      iii.      Implementasi Strategi Perkapalan Team (2010). Kamus Perkapalan Pertamina.