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Old 10 September 2004, 02:45   #41
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Quote:
Originally Posted by The Jackeens
no it doesn't
actually it does 60 miles x 60 minutes = 3600 devide by speed 20knots =180 minutes
i think Simon meant distance devided by speed will give you time or you could use the 6 minute rule based on your average speed, remember though some tides will be with you and some against you so need to take that into account,as will add/subtract from/to the total distance to be covered, interesting passage plan posted think you would be better using turning bearings on well charted objects on the southern side of the Island as propellors dont give much drive over land.
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Old 10 September 2004, 02:51   #42
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Quote:
Originally Posted by tim griffin
think you would be better using turning bearings on well charted objects on the southern side of the Island as propellors dont give much drive over land.
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Think they've sorted / they are sorting !!!that one Tim

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Old 10 September 2004, 03:53   #43
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Quote:
Originally Posted by tim griffin
think you would be better using turning bearings on well charted objects on the southern side of the Island
Rather keep mine on me trailer if its all the same

Quote:
Originally Posted by Simon
Predicted I think is the point here. Plan the passage then execute. You can predict your finish time taking into consideration tides stopages etc using the correct formula.
That would be a time trial then

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Old 10 September 2004, 04:07   #44
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Quote:
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That would be a time trial then

Pete
yep you've got it Pete7
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Old 10 September 2004, 04:26   #45
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Thanks tim. Will pop over and say hello next week.
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Old 10 September 2004, 10:19   #46
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bejaysus it's getting too complicated for me.... :)

Quote:
Originally Posted by tim griffin
actually it does 60 miles x 60 minutes = 3600 devide by speed 20knots =180 minutes
i think Simon meant distance devided by speed will give you time or you could use the 6 minute rule based on your average speed, remember though some tides will be with you and some against you so need to take that into account,as will add/subtract from/to the total distance to be covered, interesting passage plan posted think you would be better using turning bearings on well charted objects on the southern side of the Island as propellors dont give much drive over land.
regards Tim
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plus time taken to eat a couple of Mars Bars

Forgot that then didn't you Tim

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Old 10 September 2004, 14:53   #47
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oh bugger where is me reeds almanac must look up tables for Mars bar chomping , does it depend on height of eye ie the greater the height the quicker they go down ,a wild stab in the dark i would add 5 minutes does the same rule apply for sandwiches and if they are different types does this change the formula
best of luck with the predicted log
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Old 10 September 2004, 15:09   #48
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Quote:
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best of luck with the predicted log
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darn...thought you were going to do it .... would be nice to see a Solent win

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Old 10 September 2004, 15:19   #49
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would love to but am working , now talking about almanacs ever had a go of doing vertical angles with a sextant to find distance off a charted object
works with a piece of string and a ruler its true honest
regards Tim
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Old 10 September 2004, 16:04   #50
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Quote:
Originally Posted by tim griffin
would love to but am working , now talking about almanacs ever had a go of doing vertical angles with a sextant to find distance off a charted object
works with a piece of string and a ruler its true honest
regards Tim
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I believe you !!!!

K
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