In an upcoming game the action is going to be on a large patrol boat,
circa today. The boat is based off the Australian Armidale class as
produced by Austal, with minimal modifications to suit the game. One of
the modifications I'm considering is to give it water jet propulsion
rather than the twin screws it currently has. What are the pros and cons
of each, power to drive them not being a factor.
I think his 'maintenance' question in GURPS will boil down to the cost.
In GURPS maintenance is proportional to the inverst sqrt of the cost.
For a TL8 1000kW "patrol boat" (from the tables on VE32):
AMT lbs $ name
15k 5010 50k screw
12k 1020 10k light screw
20k 4080 80k ducted prop
20k 1020 40k hydrojet
From this, the component with the lightest maintenance is the light
screw. A Hydrojet will have slightly less maintenance.
(Note that volume is also proportional to weight (cf=lbs/50 to be exact).)
(note that at TL8 the MHD are completely silent... a good characteristic
for a patrol craft -- see VE32)
_______________________________________________
GurpsNet-L mailing list <[email protected]>
http://mail.sjgames.com/mailman/listinfo/gurpsnet-l
