[gurps] Farming without dry land

[Onno Meyer]

> >* Finally, total life support provides food as 
> >  well as air. It is available from TL7 up, at
> >  200 cf and 2,000 lbs. per person or less. The
> >  rules don't really say if that is algae glop 
> >  or truly edible food, but I guess the quality
> >  depends on the TL.
> 
> It might well be easiest to combine this for the vital things with local
> diet for interest and bulk.

Say I want total life support, powered by solar cells
and batteries for a 12-hour night, to be recharged in
each 12-hour day, i.e. twice the immediately consumed
power.

TL7:  4,560 lbs. plus 1,000 sf (advanced batteries)
TL8:  1,482 lbs. plus 500 sf (advanced batteries)
TL8:  1,110 lbs. plus 500 sf (rechargeable power cells)
TL9:    465 lbs. plus 250 sf (rechargeable power cells)
TL10:   445 lbs. plus 250 sf (rechargeable power cells)

Normal sails can mount solar cells from TL10 up, and 
rigid wingsails can do it from TL7 onwards. 

But unless the boat stays at the equator or in the 
summer hemisphere at all times, there must be more 
solar cells and batteries, in the worst case for a 
six-month polar night ...