Docking usually provides a ship safe harbour for the night. Typically it takes 8 hours to fully load or unload a hip.
Ship maintenance and docking fees
Size of ship
Cost per month
Docking Fee per day
10 feet or less
11 — 30 feet
31 — 75 feet
76 — 100 feet
101 - 200 feet
*A lot of harbours are not big enough to accommodate a ship of this size.
Cost of Stores
Although these values might change depending on where the supplies are purchased due to scarcity of the stores in the local area these are the average prices per month.
Additionally, the cost of 30gp per Sailor per month suddenly pushes the cost of operating ships
The cost of 10 crew for 1 month with a single weapon is 461 gold pieces.
Weight of Stores
All ships are designed to operate at least one month at sea. As a result, the first 3 stores of Drink and Food have no impact upon the ship's Cargo Capacity or speed except in the case of the Lighten the Load action. Beyond these the following cargo capacity requirements are needed;
1 food store (wagon load)
20 ammunition crates
Taking on board passengers does incur costs but can be an easy way to cover costs as well. The cost of a passenger is a function of 10. For every 10 crew or passengers or combination thereof, there is a monthly operational cost of 160gp.
Taking on 1 passenger when you have 10 crew already requires an additional store of Food and Drink. Taking on 1 passenger when you have 16 crew requires the same amount as one would need for the 16 crew.
Passengers seldom travel for long periods of time with a long journey from the northern hemisphere to the southern hemisphere maybe lasting four months maximum. Typically, passengers board vessels with the intention of spending no more than two weeks at sea. Operationally this means the ship could take 20 passengers to and from a port to another and back again for the same store cost of 1 since it is 10 passengers 1 way and 10 on the way back each is only for 2 weeks.
It is not recommended you get more complex than this as it becomes a tedious accounting exercise.
Typical Passenger Ticket Fees
Most ships will carry up to 10 passengers if they can. On a two-week voyage 10 passengers might pay for the ships monthly operational costs. Some ships have dedicated passenger quarters and these can demand higher prices but generally passengers are lucky to get a dry bunk or hammock to sleep in alongside the crew.
Price of Passage (Per Mile)
A ship with no cargo is a sorry sight to see. A ship will full cargo is a happy one. It's making money. As a rule of thumb, the cost per ton of cargo to be hauled is 20gp per month. For smaller values or larger quantities, the following table may be helpful, bearing in mind one ton is equal to 2000 pounds:
Non-Living Trade Goods per ton
Foods and Spices
Iron or 2000 sq yards of canvas
Copper or 2000 sq yards of cloth
Silver or 2000 sq yards of linen
2000 sq yrds of silk
Living Trade Goods
Living trade goods are treated as passengers for the purposes of calculating cargo. However, some take up more or less space.
Passenger space required
Domesticated animals are animals that the ship's crew typically would know about. For a human crew that might include goats, pigs, cattle, or sheep. For a predominantly aquatic crew that might include dolphins, tuna, octopuses, or dugongs.
Undomesticated animals take up more space as a result of needing to be handled with care. A farmer could then ship 4 Ducks, 3 goats, 2 cows, and 2 riding horses on an average vessel for 200gp per week of sailing. It would cost the ship 160gp in operational costs for the 10 additional passengers. The Captain of the ship nets at least 40gp profit if he returns without