Talk:3013: Kedging Cannon - Revision history

172.70.211.99 at 18:53, 28 November 2024

2024-11-28T18:53:11Z

172.68.22.83: Note on cable ferries

2024-11-22T01:49:11Z

Note on cable ferries

172.69.130.117 at 12:19, 20 November 2024

2024-11-20T12:19:49Z

172.69.130.116 at 12:18, 20 November 2024

2024-11-20T12:18:45Z

172.69.194.226 at 09:25, 20 November 2024

2024-11-20T09:25:35Z

Lordpishky: Suggest Ship is the `Flying Dutchman'

2024-11-20T01:25:19Z

Suggest Ship is the `Flying Dutchman'

172.71.150.108 at 00:10, 20 November 2024

2024-11-20T00:10:45Z

JohnHawkinson: fix my typo

2024-11-20T00:09:16Z

fix my typo

PRR: /* Sailing upwind */ new section

2024-11-19T22:44:25Z

‎Sailing upwind: new section

162.158.154.6 at 21:47, 19 November 2024

2024-11-19T21:47:18Z

← Older revision		Revision as of 18:53, 28 November 2024
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	Cable ferries are not just for crossing rivers - they can also be used in the sea, such as the [https://www.bcferries.com/on-the-ferry/our-fleet/baynes-sound-connector/BSC_ Baynes Sound Connector] [[Special:Contributions/172.68.22.83\|172.68.22.83]]		Cable ferries are not just for crossing rivers - they can also be used in the sea, such as the [https://www.bcferries.com/on-the-ferry/our-fleet/baynes-sound-connector/BSC_ Baynes Sound Connector] [[Special:Contributions/172.68.22.83\|172.68.22.83]]
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		+	Fun fact kedging is obscure enough that searching just the word kedging returns this page as a result[[Special:Contributions/172.70.211.99\|172.70.211.99]] 18:53, 28 November 2024 (UTC)

← Older revision		Revision as of 01:49, 22 November 2024
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	My thought at the line `Is that why your ship takes forever to--' was that the ship was the `Flying Dutchman' taking forever to round the cape. [[User:Lordpishky\|Lordpishky]] ([[User talk:Lordpishky\|talk]]) 01:25, 20 November 2024 (UTC)		My thought at the line `Is that why your ship takes forever to--' was that the ship was the `Flying Dutchman' taking forever to round the cape. [[User:Lordpishky\|Lordpishky]] ([[User talk:Lordpishky\|talk]]) 01:25, 20 November 2024 (UTC)
		+
		+	Cable ferries are not just for crossing rivers - they can also be used in the sea, such as the [https://www.bcferries.com/on-the-ferry/our-fleet/baynes-sound-connector/BSC_ Baynes Sound Connector] [[Special:Contributions/172.68.22.83\|172.68.22.83]]

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 ::The system described doesn't need two cannons, just two anchors and winches for continuous operation. As something of an anonymous IP address editor myself, I am checking the math and intend to parameterize the assumptions for different size boats, different headwinds, and other different parameters. If I am successful, I will log in to upload a graph showing when cannon kedging is superior (if it ever is....) [[Special:Contributions/172.68.23.92|172.68.23.92]] 10:44, 19 November 2024 (UTC)
 :::I don't see depth of the water in the calculation.  In the limit, if the anchor is snagging something at the surface of the water, the ship moves forward 300 m per shot.  If the anchor is snagging something very very deep, the ship moves forward 0 m per shot.  I kinda suspect that there's some assumption built in, and that's what's showing up as the effective speed, but not sure. [[Special:Contributions/162.158.154.6|162.158.154.6]] 21:47, 19 November 2024 (UTC)
-:::If you're adding to the calculations ... I also don't see a bottom line calculation for the tacking speed, unless I'm just missing it?  There's a statement that kedging is 61% of that speed, but I can't see where/how the tacking speed was calculated.  My intuition is screaming that over half the speed of tacking against the wind has got to be a mistake of some kind, but my intuition has certainly betrayed me before. The assumption that you can anchor to the surface of the water does seem like a good place to look for a hidden assumption![[Special:Contributions/172.69.130.116|172.69.130.116]] 12:18, 20 November 2024 (UTC)
+:::If you're adding to the calculations ... I also don't see a bottom line calculation for the tacking speed, unless I'm just missing it?  There's a statement that kedging is 61% of that speed, but I can't see where/how the tacking speed was calculated.  My intuition is screaming that over half the speed of tacking against the wind has got to be a mistake of some kind, but my intuition has certainly betrayed me before. The idea that maybe you can anchor to the surface of the water does seem like a good place to look for a hidden assumption![[Special:Contributions/172.69.130.116|172.69.130.116]] 12:18, 20 November 2024 (UTC)
 I've got a strong hunch that this comic is about a captain who fails to take into account '''recoil / conservation of momentum''', which is a frequent mistake.

@@ Line 16: / Line 16: @@
 ::The system described doesn't need two cannons, just two anchors and winches for continuous operation. As something of an anonymous IP address editor myself, I am checking the math and intend to parameterize the assumptions for different size boats, different headwinds, and other different parameters. If I am successful, I will log in to upload a graph showing when cannon kedging is superior (if it ever is....) [[Special:Contributions/172.68.23.92|172.68.23.92]] 10:44, 19 November 2024 (UTC)
 :::I don't see depth of the water in the calculation.  In the limit, if the anchor is snagging something at the surface of the water, the ship moves forward 300 m per shot.  If the anchor is snagging something very very deep, the ship moves forward 0 m per shot.  I kinda suspect that there's some assumption built in, and that's what's showing up as the effective speed, but not sure. [[Special:Contributions/162.158.154.6|162.158.154.6]] 21:47, 19 November 2024 (UTC)
 I've got a strong hunch that this comic is about a captain who fails to take into account '''recoil / conservation of momentum''', which is a frequent mistake.

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 It is definately not visible, but I'm pretty sure there is a beret hiding under that hat.
 [[Special:Contributions/162.158.10.188|162.158.10.188]] 18:58, 19 November 2024 (UTC)
 :That was my first thought. [[Special:Contributions/172.71.150.108|172.71.150.108]] 00:10, 20 November 2024 (UTC)
 The sailing rig drawn is approximately a "2 masted schooner". There were MANY variations and add-ons in schooners, few this simple, but Munroe is making funnies not a treatise on sailing ships.
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 Yes, kedging will work in any wind or no wind, so this is a superior solution, until the powder runs out. [[User:PRR|PRR]] ([[User talk:PRR|talk]]) 22:44, 19 November 2024 (UTC)
-== Flying Dutchman ==
+My thought at the line  `Is that why your ship takes forever to--' was that the ship was the `Flying Dutchman' taking forever to round the cape. [[User:Lordpishky|Lordpishky]] ([[User talk:Lordpishky|talk]]) 01:25, 20 November 2024 (UTC)

← Older revision		Revision as of 01:25, 20 November 2024
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	Yes, kedging will work in any wind or no wind, so this is a superior solution, until the powder runs out. [[User:PRR\|PRR]] ([[User talk:PRR\|talk]]) 22:44, 19 November 2024 (UTC)		Yes, kedging will work in any wind or no wind, so this is a superior solution, until the powder runs out. [[User:PRR\|PRR]] ([[User talk:PRR\|talk]]) 22:44, 19 November 2024 (UTC)
		+
		+	== Flying Dutchman ==
		+
		+	My thought at the line `Is that why your ship takes forever to--' was that the ship was the `Flying Dutchman' taking forever to round the cape.
		+	[[User:Lordpishky\|Lordpishky]] ([[User talk:Lordpishky\|talk]]) 01:25, 20 November 2024 (UTC)

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 :Ha ha now exactly what you mean. The three longest month of the year are November November November... :-) --[[User:Kynde|Kynde]] ([[User talk:Kynde|talk]]) 10:05, 19 November 2024 (UTC)
 ::Having a certain number of winches helps. [[Special:Contributions/172.68.23.92|172.68.23.92]] 10:44, 19 November 2024 (UTC)
+:My birthday is in November, helps a lot. [[Special:Contributions/172.71.150.108|172.71.150.108]] 00:10, 20 November 2024 (UTC)
 Wow, whoever wrote the Speed and Economic Analysis section, you are amazing! [[Special:Contributions/172.71.98.135|172.71.98.135]] 05:13, 19 November 2024 (UTC)
 :Sadly is was done by an anonymous IP address... But cool analysis. Have no idea what he actually calculates or if it is correct though ;-) --[[User:Kynde|Kynde]] ([[User talk:Kynde|talk]]) 10:05, 19 November 2024 (UTC)
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 [[Special:Contributions/162.158.10.188|162.158.10.188]] 18:58, 19 November 2024 (UTC)
 == Sailing upwind ==

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 :Nice.  I think I managed to somehow get in first (before I logged in); first time I've done so, so apologies for not knowing all the conventions. I think the title text is the main non-obvious thing, since the simile between a windmill's mechanical function and that of tacking seems clearly intentional,but I'm sure that could be edited to be clearer than my hasty writup.  [[User:Mneme|Mneme]] ([[User talk:Mneme|talk]]) 02:10, 19 November 2024 (UTC)
-For a brief, brief, moment, my brain failed to swap in and dredge up the memory of what kedging was, and I wondered if they were trying to use the aft cannon as a weak propulsion mechanism (hey, if it was a spacecraft…). And then I remembered what kedigng was and—DUH! [[User:JohnHawkinson|JohnHawkinson]] ([[User talk:JohnHawkinson|talk]]) 02:29, 19 November 2024 (UTC)
+For a brief, brief, moment, my brain failed to swap in and dredge up the memory of what kedging was, and I wondered if they were trying to use the aft cannon as a weak propulsion mechanism (hey, if it was a spacecraft…). And then I remembered what kedging was and—DUH! [[User:JohnHawkinson|JohnHawkinson]] ([[User talk:JohnHawkinson|talk]]) 02:29, 19 November 2024 (UTC)
 If it wasn't for kedging, I probably wouldn't be able to make it all the way through November. [[Special:Contributions/108.162.245.133|108.162.245.133]] 04:25, 19 November 2024 (UTC)

← Older revision		Revision as of 22:44, 19 November 2024
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	It is definately not visible, but I'm pretty sure there is a beret hiding under that hat.		It is definately not visible, but I'm pretty sure there is a beret hiding under that hat.
	[[Special:Contributions/162.158.10.188\|162.158.10.188]] 18:58, 19 November 2024 (UTC)		[[Special:Contributions/162.158.10.188\|162.158.10.188]] 18:58, 19 November 2024 (UTC)
		+
		+	== Sailing upwind ==
		+
		+	The sailing rig drawn is approximately a "2 masted schooner". There were MANY variations and add-ons in schooners, few this simple, but Munroe is making funnies not a treatise on sailing ships.
		+
		+	Schooners generally are better for 'tacking upwind' than square-rig, while potentially limiting the amount of manpower needed and spar-weight up high.
		+
		+	Yes, kedging will work in any wind or no wind, so this is a superior solution, until the powder runs out. [[User:PRR\|PRR]] ([[User talk:PRR\|talk]]) 22:44, 19 November 2024 (UTC)