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Nearest Measured Mile To Craobh Marina

Posted: Mon Jul 30, 2018 4:46 pm
by BlowingOldBoots
Hi,

I need to calibrate my water speed transducer. Where would be the nearest measured mile to Craobh Marina?

Cheers,

Alastair

Re: Nearest Measured Mile To Craobh Marina

Posted: Mon Jul 30, 2018 5:38 pm
by Telo
Cannot think of any in that area, so I suppose the nearest would be in the Clyde at Arran or Skelmorlie.


You might have to hand-knit one.

Re: Nearest Measured Mile To Craobh Marina

Posted: Mon Jul 30, 2018 10:42 pm
by wully
The only one I can recal seeing was on the east side of Arran and that was a LONG time ago..

GPS, slack water on a calm day instead?

Re: Nearest Measured Mile To Craobh Marina

Posted: Tue Jul 31, 2018 1:53 pm
by BlowingOldBoots
wully wrote:The only one I can recal seeing was on the east side of Arran and that was a LONG time ago..

GPS, slack water on a calm day instead?


Having now briefly read the manual the ST60 is a bit smarter than I thought. There are a few ways to do this linked to SOG and not linked to SOG where the ST60 will calculate the correction factor or you can manually correct it More reading is required but it looks like I do not need slack water or a measured mile to calibrate the correction.

Re: Nearest Measured Mile To Craobh Marina

Posted: Tue Jul 31, 2018 5:06 pm
by mm5aho
I used to have one of those, and did the calibration both by measured mile (Arran, yes, its still there), and by GPS.
Best I've found is the canals (Caledonian or Crinan) with their permanent slack water, but have done this at sea also using the GPS.
There's a factor to adjust. I used to have the ST60, now have NASA Clipper, but all work much same way. It's in the manual, and not difficult.

Re: Nearest Measured Mile To Craobh Marina

Posted: Wed Aug 01, 2018 8:08 pm
by aquaplane
I did it by GPS, two waypoints a mile and a bit apart.
Head for one and when a mile away start the run, stop it when you get there.
Turn round and repeat with the other waypoint.
Ignore the instruction which says that if you are happy with the result you are done, do two more runs and it may save the result.
That was i50.
I did it in Loch Craignish about neaps, Loch Melfort would work maybe?
Have fun.

Re: Nearest Measured Mile To Craobh Marina

Posted: Fri Aug 03, 2018 8:26 pm
by claymore
Are we sure there isn't one along the east coast of Mull in the vicinity of Duart Pt and Loch Spelve?

Re: Nearest Measured Mile To Craobh Marina

Posted: Sat Aug 04, 2018 10:13 pm
by wully
claymore wrote:Are we sure there isn't one along the east coast of Mull in the vicinity of Duart Pt and Loch Spelve?


Naw, nae sure.

BTW, did ye get booted oot the lagoon?

Re: Nearest Measured Mile To Craobh Marina

Posted: Mon Aug 06, 2018 9:30 pm
by claymore
Naw - bit o' a disruptured year.

Re: Nearest Measured Mile To Craobh Marina

Posted: Tue Aug 07, 2018 5:20 pm
by wully
Aye, it’s been a strange year...

Spent too much time eating Tasty Pastry and not enough on the Fray Bentos.