12-04-2017, 06:26 AM | #31 |
Join Date: Jun 2005
Location: Lawrence, KS
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Re: Sailing ships at TL3
If that's the meaning you take "effectively" to have, then yes.
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Bill Stoddard I don't think we're in Oz any more. |
12-04-2017, 07:53 AM | #32 |
Join Date: Sep 2006
Location: Luxembourg
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Re: Sailing ships at TL3
There are -today- supertanker and container ships that uses or plan to uses wind power to assist propulsion. Kite sail are in use, Flettner Rotor either on trial or in use.
The "stop the ship dead in water" is not a problem, it would be the same if using draw power on a diesel ship engines. The change direction is also imho not relevant. The way I see the spell, you can use it if you have a way to hook the power source to an arbitrary device. The spell become/suppleant that device. A sail ship doesn't really qualify imho, it moves itself but you cannot use his sails to move something else, the ship itself staying in place. |
12-04-2017, 08:34 AM | #33 |
Join Date: Jan 2010
Location: Brighton
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Re: Sailing ships at TL3
Ultimately I think the point is in terms of the topic at hand, a sail boat is a "machine" that is not limited to only move in the direction of the wind, but can sail off the wind.
I.e it uses a mechanism to covert the energy of the wind into thrust that can be applied in a different direction from that of the wind. Now weather or not that's enough mechanism to satisfy the spell I'm not sure, it's not really my area Last edited by Tomsdad; 12-04-2017 at 08:39 AM. |
12-04-2017, 08:54 AM | #34 | |
Join Date: Jan 2010
Location: Brighton
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Re: Sailing ships at TL3
Quote:
Last edited by Tomsdad; 12-04-2017 at 09:19 AM. |
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12-04-2017, 09:00 AM | #35 |
Join Date: Feb 2016
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Re: Sailing ships at TL3
But a sailboat is not a machine in GURPS because it is an unpowered vehicle (Supers, p. 106, the Mechanical Hierarchy).
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12-04-2017, 09:03 AM | #36 | |
Join Date: Jul 2008
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Re: Sailing ships at TL3
Quote:
(...drawing power from a rotating shaft seems a bit goofy on its own, since the power generating bit doesn't actually work if the shaft isn't rotating, and if the shaft is rotating downstream devices can use that...)
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I don't know any 3e, so there is no chance that I am talking about 3e rules by accident. |
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12-04-2017, 09:04 AM | #37 | |
Join Date: Jan 2010
Location: Brighton
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Re: Sailing ships at TL3
Quote:
But then the debate seems to be based on some pretty precise distinctions! Last edited by Tomsdad; 12-04-2017 at 09:10 AM. |
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12-04-2017, 09:08 AM | #38 | |
Join Date: Jan 2010
Location: Brighton
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Re: Sailing ships at TL3
Quote:
Similarly if you furl your sails your boat doesn't come to a instant and complete stop any more than a boat that switches off it's propeller. *well subject to the wind and water acting directly on the hull of course Last edited by Tomsdad; 12-04-2017 at 09:18 AM. |
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12-04-2017, 09:21 AM | #39 | |
Dog of Lysdexics
Join Date: Oct 2004
Location: Melbourne FL, Formerly Wellington NZ
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Re: Sailing ships at TL3
Quote:
A sailing bow harnesses natural energy (wind) to do use full work (transport passengers and cargo) it is a technology based machine. a technology more over of key importantce in the history of techlnoly it only been over showed by electricity and gunpowder in how it has shaped the modern world. Last edited by roguebfl; 12-04-2017 at 09:30 AM. |
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12-04-2017, 09:28 AM | #40 | |
Join Date: Aug 2007
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Re: Sailing ships at TL3
Quote:
It can't just be "energy" whether that be kinetic energy of a vehicle's motion, the thermal energy of a fire or several other things. It isn't the energy that's the important part it's the "in a form usable by a machine" that is. It might be illuminating to look at Draw Power's predecessor Spell, Lend Power. If you wanted your sailing ship to go faster could you cast Lend Power on it? No, the spell for that is Propel. That would make your ship go faster even if there was no wind at all.
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Fred Brackin |
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