1. Programa de Atualização Profissional
Evaluation of the Fleet Economic
Performance
methodology summary
by Gláucio Bastos, M.B.A., Ch.E.

2. Programa de Atualização Profissional
abstract
 target: vessels fleet productivity definition from relevant
economic data whatever the vessels chacracteristics or
their activity and location
 due to the difficulty of obtaining complete data on costs,
revenues, employment and activity of the entire fleet, we
set a representative and otpimized sample from the total
number of vessels for this survey which allows to calculate
the revenues by ship according to its characteristics and its
activity
 statistical analysis to define a model for fleet’s gross revenue
allows to asses its activity level

3. Programa de Atualização Profissional
data collection
 annual surveys are conducted to update the collection of
the following data:
 activity (objective, areas of operation, duration and
number of trips)
 diversification of activities (besides the main one)
 ship (physical characteristics, purchase price, insurance
value, as is estimated value)
 major equipment (description and cost of acquisition
and maintenance of essential parts for the main activity)

4. Programa de Atualização Profissional
data collection
 annual surveys are conducted to update the collection of
the following data :
 other onboard equipment (motor, electronic,
mechanical, for storage)
 revenues and costs (transaction value, operating costs -
fuel, oil, food, dockage, insurance premiums, repairs,
maintenance, etc).
 crew (quantity, functions, salaries)
 vessels are grouped into segments each with common
characteristic bands

5. Programa de Atualização Profissional
sampling
 for obtaining reliable economic indicators covering the
entire fleet, the sampling plan is optimized
 fundamental to a minimum accuracy level of economic
indicators
 the minimum (best) sample is estimated for each segment
so that in at least 80% of the measurements, the range of
variation (precision) around vessels average revenue is 40%
with 95% certainty (as required by the regulator)

6. Programa de Atualização Profissional
sampling
 vessels are selected for an interview according to a
systematic random sampling procedure
 it is applied within each segment to ensure location
and vessel length representativity

7. Programa de Atualização Profissional
gross revenue model
 each segment has its linear model
 data parameters with significance are (costs are not
significant for the revenue):
 ship length
 crew number
 annual operation months number (least significant at
25%)
 held life cycle
 accuracy is good mainly due to there is a specific model for
each fleet segment

8. Programa de Atualização Profissional
gross revenue model
 there is a correlation between the following parameters:
 length and crew number
 operation months number and crew number
 crew number and lifecycle (least significant at 15%)
 e.g. in the case of segment “TrawlerNex length<12m.”:
 population size: 237
 minimum size of the representative sample : 6
 Gross_Revenue = -7.03 - 19.1 x Length – 11.7 x Crew –
- 103 x Months – 15.4 x LfCycl + 8.63 x Crew x Length +
+ 48.4 x Crew x Months + 4.34 x Crew x LfCycl
(Revenue in $, Length in meters, LfCycl in years)

9. Programa de Atualização Profissional
results
* evaluation of the sampling distribution algorithm*
comparison of the distribution between sample and population by region
[SRG,AQ,...,PL,SB] and by length [12 – 23 meters]
e.g. for the fleet segment “DemTrawl 12-24m“:
is good the length representation and excellent the spatial representativeness

10. Programa de Atualização Profissional
results
 model of the overall revenue is used to assess the
total income of the fleet segments
 cost data allows assessment of the overall and
segment gross profit and the direct employment
level of the fleet

11. Programa de Atualização Profissional
results
 the model of the gross revenue allows definition of each fleet
segment contribution for total gross income and total gross profit
 economic data allow assessment of the intermediate costs for a
significant sample of vessels covering the full range of activities