How many ships pass through a system?
- Thread starter MonkeyX
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AnotherDilbert
Emperor Mongoose
I don't think there are any specific rules.
GT Far Trader gave an idea about the total flowing in and out of, largely based on economic activity (~pop size) modified by trade classifications.
Some worlds would see a few Free Traders per year, some would see many large freighters (and schools of small ships?) per day.
A major world like Mora would transport hundreds of millions Dt cargo per year and a few hundreds of millions of passengers, excluding carry trade.
A smaller but well placed world like Boughene/Regina (A8B3531-D) would see less than a million Dt cargo and perhaps 40 000 passengers per year.
40000 passengers is ~100 passengers per day.
1000000 Dt cargo is ~3000 Dt cargo per day.
That's in the region of ten Subsidised Merchants per day?
One ship of 5000 Dt average per day?
Double or triple that for carry trade?
Add some couriers and pleasure craft?
Say 10-50 ships per day?
GT Far Trader gave an idea about the total flowing in and out of, largely based on economic activity (~pop size) modified by trade classifications.
Some worlds would see a few Free Traders per year, some would see many large freighters (and schools of small ships?) per day.
A major world like Mora would transport hundreds of millions Dt cargo per year and a few hundreds of millions of passengers, excluding carry trade.
A smaller but well placed world like Boughene/Regina (A8B3531-D) would see less than a million Dt cargo and perhaps 40 000 passengers per year.
40000 passengers is ~100 passengers per day.
1000000 Dt cargo is ~3000 Dt cargo per day.
That's in the region of ten Subsidised Merchants per day?
One ship of 5000 Dt average per day?
Double or triple that for carry trade?
Add some couriers and pleasure craft?
Say 10-50 ships per day?
Garnfellow
Banded Mongoose
There are a couple of different systems:
- GURPS Traveller: Starports uses the basic economic model from GT: Far Trader to calculate expected traffic based on World Trade Number and port size and type. These calculations have been run for many Charted Space sectors over on the Traveller wiki. This produces a weekly tonnage and passenger cargo number, and from there you could back into a number of ships.
- Traveller5 uses world Importance to indicate typical traffic numbers. A world with an Importance score of 0 would expect 2 ships per week, while a world with an Importance score of 5 might see 1,000 ships per week.
Reynard
Cosmic Mongoose
T5, in the World Generation section under the Importance Extension (pg. 27), has the Expected Ship Traffic chart which shows weekly and daily ship populations depending on the world's importance ranging from 0 (Very Unimportant) to 1000 a week (Very Important). Important and Very Important world tend to be the backbones of Jump routes as well.
In the absence of specific rules, I'd suggest going by the port size and population size. A high population world with a good starport will see lots, but a good port with low population will see less; probably even less than a higher population world with a lower quality starport - e.g., a C port with 10,000,000 people will see more than an A port with 50,000 people. Simply because the world with 10,000,000 people will have a larger market than the 50,000 people.
Condottiere
Emperor Mongoose
Let the dungeon master make his best judgement, and retroactively try to justify it.
Look at it from a macroscale, you could have a lot of traffic, but that's because it's a transit point, not because there's anything interesting or something anyone wants in that system.
Look at it from a macroscale, you could have a lot of traffic, but that's because it's a transit point, not because there's anything interesting or something anyone wants in that system.
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