NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Horizon Mirage
From: John Huth
Date: 2011 Dec 9, 03:30 -0500
From: John Huth
Date: 2011 Dec 9, 03:30 -0500
Greg -
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Keeping up with the grind
Usually when you get a mirage like that the sea temp is a bit above the local air temp. How far out was that vessel, do you reckon?
John
On Thu, Dec 8, 2011 at 8:35 PM, Greg Rudzinski <gregrudzinski@yahoo.com> wrote:
John,
The APL ship image was taken during the morning. Air temp 53 F, sea temp 53 F, pressure 1025 mb, wind 1-3 kts at photographer location, and judging by sea state 4-6 kts at the ship's location. Didn't sling the psychrometer for humidity and dew point. The automatic jetty fog horns were thankfully silent.
Greg Rudzinski
[NavList] Re: Horizon Mirage
From: apacherunner---com
Date: 8 Dec 2011 16:41Yes, you can see on that strip - the lettering on the side of the hull is elongated at the bottom, too, in addition to the mirroring of the hull at the stern.
Water and air temps? Wind conditions?
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Keeping up with the grind