Depends on what you mean by draw the line- the Tribunal won't care, but your market impact could be significant depending on how you manage this...
for one thing it will make it difficult for others fishing the same waters to catch much of anything, for another you are glutting the market unless you can ship a very long distance...
because 172,800 tons of fish per year will not be consumed locally...
Are you talking about the Sight of Wounded Prey? All that does is make the trap not need bait refreshed.
which allows the same trap to be used continuously and more effectively, yes.
Medieval Europe already had tools for mass fishing, it isn't like commercial fishermen were collecting one fish at a time...
I just mean it doesn't ReAn to make fish swim in to fill the trap in a hurry, which would create the overfishing problem, just saves on having to check empty traps, but basically a normal trap
archeologists found a trap in Poland which had the remains of 4000 fish in it. That is a single haul for a large fish trap, which would normally have to go unbaited due to economic constraints.
Your enchantment allows it to be baited, which will attract fish much faster...
I don't see why mundane fish traps wouldn't be baited, if nothing else with a few old fish from the last catch.
Plus you probably don't get a full haul like that every day, just when there's a feeding or a breeding or some schooling event.
because even if it were baited it would require a signifigant portion of the previous day's haul to bait the trap, and it would have to be managed so the first few fish don't consume all the bait. Large fish traps like this were typically "traffic traps" designed to simply be in locations where fish tended to school and catch them in passing...
similar to net fishing, but more passive
the numbers do assume competent fishermen using the enchanted traps 160 days of fishing per year over a very large area...
I am not sure how to book keep and balance the finance, but I reckon we just balance the use of the traps to avoid over-fishing and also avoid undue damage on and attention from neighbour villages. Lumber and fish alike would be shipped to Bjørgvin (Bergen) where there is a bustling traffic of continental merchants. Saturating the market is unlikely ... Bjørgvin is the trade hub connecting a thousand of miles of Norwegian coastline with the continent.
Probably, the traps have a lot of idle time which we could exploit if we put our minds to it in game.
What do you get in terms of annual income?
1,440,000 mythic pounds per year per trap if fully optimized.
They could well be something that someone made or discovered in the past which have been gathering dust because of the concern of the impact of using them frequently...
Frankly, it sounds like we could just not bother with that item. I was thinking in terms of baited traps, not fish weirs (which I've been reading about now). But I didn't build that into the covenant so don't want to ruffle any feathers.
The next thing is that in terms of savings the fan of summer breezes is overwhelmed by the magical oven. grogs could place rocks on or in the oven when it is not in use for coking and then carry the rocks to more distant parts of the covenant to save on heating costs. The fan is nice aesthetically, but doesn't save anything when that approach is already taken into consideration.
You are right, that is insane. Even one thousandth would be a legendary source income.
Full optimisation is not possible though, as it would take many ships to get the fish to market ... we could of course make a point of selling fresh Arctic fish in Paris or Rome, but our flying ship cannot take loads that size.
£1.4m assumed 160 days per year, so using one a about 1h/year is about £1000 ... Those figures do not sound plausible at all. Even that can hardly be shipped ... not in a day anyway.
But I am quite happy with getting a legendary source of income out of the traps ...
I won't insist on keeping three of them if somebody has better uses of the BP, but having one, I think, can be fun. Same goes with the fan, I think. Fresh air in the main hall is always nice.
Can the traps just upgrade the income source, without getting into the nitty-gritty of how many fish they catch? That would seem the best option.
to be fair, the fan is probably still worth a bonus for diplomacy on occasion...
that might be a much better approach to the traps- assuming market conditions are a bigger limitation than productivity I'll give it a +5 to income variation...
If it helps us persuade the redcaps visit more often, the fan is definitely worth it.
Is that +5 per trap or +5 for three?
+5 for the first trap, additional traps really have no bonus because a single trap will saturate the benefits, beyond allowing for more variety in what you catch. A single trap will also cover 20% of provisions costs in addition to the income roll bonus.
between savings from the fish trap, laborers, and the mead barrel, your cost of provisions per year, by my calculations, is 4 3/5 lbs.
Of course labs is your greatest expense... not that your expenses is a huge concern...