Building the Fish Banks Model and Renewable Resource Depletion

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beginning of the game is 1000 fish. Both companies begin with zero net profit, and may
go into debt to build ships. Each company begins with 2 ships each.
25.00
Catch per Ship
0.00
0.00
Fish Population
Figure 2: Catch per Ship vs. Fish Population
1200
This graph shows the Catch per Ship as it varies with the size of the fish population.
The ability of the fishing ships to catch fish does not decrease dramatically until the fish
population density drops dangerously low.
2.2 Playing the Game
***Note: The Fish Banks Exercises disk that came with this paper contains three models.
“The Fishing Game v1.02” is for STELLA II v1.02, “The Fishing Game v2.2.1” is for
STELLA II v2.2.1 and v2.2.2, and “The Fishing Game v3.0.1” is for STELLA II v3.0.1.
Section 2.2 (this section) gives the instructions for playing the game on STELLA
II v3.0.1. If you are using earlier versions of STELLA II, you should still read this
section, but you should also refer to Appendices 2 and 3. Appendix 2 gives instructions
specific to STELLA II v.2.2.1 and v2.2.2, and Appendix 3 gives instructions specific to
STELLA II v1.02. Do not open the older version of the game (v1.02, v2.2.1 or v2.2.2)
with the newer version of the software (v3.0.1) as the model will be altered. All specific
instructions are given in bold.