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Old 02-06-2013
andyinnorway andyinnorway is offline
Senior Member
Join Date: Mar 2011
Posts: 1,680
Default lane ropes and tile markers worth 1.5SPL?

I'm swimming in a resort pool all this month which is 27.4metres (30 yards)

Everyday of the week my benchmark test SPL settings are tt1.26 SPL17, this is the same in any 25m pool I go to in a typical public session

In this month's pool I am struggling to hit SPL20, 21 feels more natural, but that means +4SPL just for an extra 2.4m of pool length

but then I thought if there are no lane ropes and no marking on the bottom of the pool to follow then 1.5SPL extra per length might be normal?
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Old 02-06-2013
westyswoods westyswoods is offline
Senior Member
Join Date: Nov 2008
Location: Rio, Wisconsin
Posts: 564
Default Good Question

I don't have an answer although logic tells me you are on to something. I find it more comforting to swim with lane lines. Swimming in a pool with no bottom markings and ropes is disconcerting to me.

Swim Silent and Be Well
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Old 02-12-2013
ernewill ernewill is offline
Join Date: Dec 2008
Posts: 70

It could be related to the ratio of the length of the pool to the distance of your push off from the wall.
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