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Caesar III: Game Help
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Caesar IV Heaven » Forums » Caesar III: Game Help » About preference of docks for tradeships in case docks are placed in separate road networks
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Topic Subject:About preference of docks for tradeships in case docks are placed in separate road networks
schlingel
Pleb
posted 11-05-20 04:27 ET (US)         
There is already one topic in the forum discussing this issue, but it is too long (3 pages), each post is too long as well, and it digresses to other topics in the midway, etc. Shortly, that topic is a bit cumbersome to read. So I decided to share my experiences with trade ships on a map which has two separate road networks.

I have two separate road networks in Tarsus mission and one dock each. One dock is very close to spawn point of trade ships and has warehouses connected to it that accept:
- Clay
- Wheat
- Wine

Other dock in the other road network and is a bit far away and has warehouses that accept:
- Weapons
- Marble
- Clay

I don't sell furniture because I don't need to, I make enough money. I also don't buy them because I can produce them.

I have observed trade ships for a quite long time, you can do it yourself using my saved game. According to my observations, I believe that, after a ship enters the map, she chooses which dock to pick according to following rules:
- She checks how many types of commodities she can actually sell to any dock. She picks that dock, at which she can sell the most types. She sells her commodities, then tries to buy anything if possible, if not she just leaves.
- If she cannot sell anything to any dock, she then chooses the dock where she can buy something. I think the "amount of types of commodities to buy" affects their decision here as well, if there are more than one road networks with docks.
- If the preferred dock is occupied, she then sails to the other dock and sells and/or buys her commodities there, if possible.

In my city, you can see that trade ship from Miletus appears and docks to the nearby dock if possible and sells wheat and clay there. She does this all the time when she can sell those commodities. In this case she can't buy marbles and she doesn't care about it, she just leaves after she has sold everything she could.

Any ship from Alexandria won't stop at the nearby dock because the wine warehouse is full most of the time (and Alexandria can only sell wine), therefore she sails to the other choice where she can't sell anything but can buy weapons and marble. If that dock is occupied as she enters the map, she then sails to the nearby dock by the spawn point hopelessly, cannot do any trade (because that dock is not connected to marbles and weapons and wine warehouse is full) and she then leaves empty handed.

So shortly, amount of types of commodities a ship can actually sell to any dock at any given time affects her decision to pick a dock to go. Selling is their priority and if this means that they can't buy anything, they accept that.
AuthorReplies:
Brugle
HG Alumnus
posted 11-05-20 09:54 ET (US)     1 / 5       
Hi schlingel, welcome to Caesar III Heaven.
I believe that, after a ship enters the map, she chooses which dock to pick according to following rules:
First, let me explain what we know about a ship choosing a dock. Only one ship can "reserve" a dock. A ship can reserve a dock either when it enters the map and a dock is not reserved or when it is at one of a dock's 2 "waiting points" and a dock is not reserved. A ship that reserves a dock sails to the dock's "trading point" and trades (if it can). When a ship finishes trading and leaves the dock, that dock is no longer reserved. When a ship enters the map and all docks are reserved, it sails to a dock's waiting point that is not occupied (although it could have one or more ships sailing to it) if possible--if not then the ship leaves the map without going to a dock.

Your dock that is close to the water entry point has ship access to the trading point but not to either waiting point. (I discovered this with a dock in the same place, as described in reply #25 of Coming Out in Tarsus.)

I watched your city for 3 years. Only twice in that time did a ship have a choice of docks, and both times it chose the distant dock. I suspect that dock was chosen because it is first in the "building list", but that's just a guess. (I've never investigated this because I almost never build multiple docks.)
In my city, you can see that trade ship from Miletus appears and docks to the nearby dock if possible
No. Several times I saw a Miletus ship sail to the distant dock even though there were no ships near the close dock (because an Alexandria ship had reserved it and there was no access to the waiting points).
Any ship from Alexandria won't stop at the nearby dock because the wine warehouse is full most of the time
No. Several times I saw an Alexandria ship sail to the close dock and immediately leave.

By the way, the reason the Alexandria ship left was not that the nearby warehouse was full (since there was another wine warehouse that had room), but because the city had at least 40 wine in warehouses (which prevents a city from trying to buy more).

[This message has been edited by Brugle (edited 11-05-2020 @ 10:16 AM).]

schlingel
Pleb
posted 11-07-20 15:55 ET (US)     2 / 5       
So you say that there is absolutely no connection with number of materials that can be exported and which dock to pick?
Brugle
HG Alumnus
posted 11-07-20 17:27 ET (US)     3 / 5       
So you say that there is absolutely no connection with number of materials that can be exported and which dock to pick?
I would be very surprised if there was a connection.
schlingel
Pleb
posted 11-08-20 13:36 ET (US)     4 / 5       
I see.
Thanks for your answer and warm welcome!
sukalu88
Banned
posted 12-22-20 20:46 ET (US)     5 / 5       
[ Message deleted by Pecunia at 12-23-2020 02:36 AM ]
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