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Old 04-27-2015, 11:31 AM   #61
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Point lookout Maryland.Click image for larger version

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Looking for mama.


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Old 04-27-2015, 04:45 PM   #62
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[QUOTE=Datenight;328276]
Quote:
Originally Posted by Marin View Post
It would take me far to long to explain why glassy water is so dangerous to a seaplane pilot. Not once you're on it but landing on it and taking off from it. Landing is the far more potentially dangerous situation, but it can get a pilot in trouble when taking off with a heavy load.

Marin,

Is the danger due to not being able see where the sky ends and water begins?
No, it's got nothing to do with that. I took the photo that accompanied my earlier post while I was on final approach to the lake. Based on what you see in the photo, how high was I off the water when I snapped the photo? Twenty-five feet, fifty feet, seventy five feet, or a hundred feet?

PS-- Saw I had the photo on this computer so here it is again.
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Old 04-28-2015, 10:21 AM   #63
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Marin,

It sounds like a depth perception issue. Could you direct me to a site or source where I might learn more?

Thanks,

Rob
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Old 04-28-2015, 11:12 AM   #64
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These two pictures taken two minutes apart on April 10, 2015 - one looking east and one west. About 20nm off Cape Mendocino on the California coast.





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Old 04-28-2015, 12:02 PM   #65
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Comanche,
I'm more interested in your boat than the glass. You have a very interesting boat and a few pics on "interesting boats" would be very welcome to this trawler owner.
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Old 04-28-2015, 07:10 PM   #66
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Marin,

It sounds like a depth perception issue. Could you direct me to a site or source where I might learn more?

Thanks,

Rob
Depth perception plays a role but it's a more complex issue than that.

With regard to information about the topic, are several books on the subject of which is my own book, "Flying A Floatplane" which came out in 1985 and went through three editions before its print run ended in the mid-2000s. One can easlily find used copies on the internet. It is one of the most complete books on the subject at some 260 or 70 pages, and covers the glassy water challenge very well.

I wrote it assuming the reader was already a pilot, so it's not a book on how to fly. It's a book on what a licensed pilot needs to know to fly a floatplane.

This is the cover of the second edition, which of the three is my favorite even though the third edition has additional information about flying turbine floatplanes and floatplane maintenance.

Glassy water can be a very tough situation to deal with and it has been responsible for a fair number of accidents and fatalities.
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Old 04-28-2015, 09:14 PM   #67
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Thanks Marin.

I am not a pilot but have many friends and a family member in the business. I will look for a copy of the second edition if only to learn more about "glass" take off and landing.

Rob
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Old 04-28-2015, 10:29 PM   #68
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Thanks Marin.

I am not a pilot but have many friends and a family member in the business. I will look for a copy of the second edition if only to learn more about "glass" take off and landing.

Rob
I'll save you the hassle of finding and buying a book, but first give me your answer to the question I posed in post #62: how high do you think my plane was off the surface of the lake when I took the photo during landing? 25, 50, 75, or 100 feet off the water?

(The moderators can move this to the Off Topic folder if they'd like to. If Rob answers the question I'll only have one post after that on this.)
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Old 04-29-2015, 06:52 AM   #69
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I'll take a guess of 100 feet. The dash is still angled and any lower you probably should have one hand on the wheel and one either trimming or on the throttle not taking pictures. Looking just at the outside view in the photo, you could just as easily be already landed. Good pic as it proves your point.
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Old 04-29-2015, 08:31 AM   #70
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I'll say you are sitting on the water.


But no matter...looking forward only or only straight down to determine glassy water height is a good way to die early.
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Old 04-29-2015, 10:09 AM   #71
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Agree with Psneeld - I reckon zero feet alt. Very interested to hear the answer.
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Old 04-29-2015, 10:30 AM   #72
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Webcam shot of my Harbor this morning....
I'm behind the tree on the left next to the Schooner. So much for my free security cam LOL...

A few interesting boats came into Washington NC over the weekend. To the left of the center tree, a Great Harbor 37 on the way up from Florida, and a Valor 44 on a delivery trip to the Chesapeake from the Gulf.

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Old 04-29-2015, 10:49 AM   #73
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Old 04-29-2015, 11:23 AM   #74
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Eric:
I posted some pics in the "boat pics" thread.
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Old 04-29-2015, 01:31 PM   #75
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any lower you probably should have one hand on the wheel and one either trimming or on the throttle not taking pictures.
Actually, I've taken photos during all phases of flying an approach including the last moments before touchdown. Out of curiosity I timed how long it takes years ago when I was using a film SLR. Using the "one-one thousand..." method it takes four seconds or less to lift the camera, frame the shot, push the button and lower the camera.

Probably not something one would do while landing an FA-18 on the deck of a carrier although I'm sure there are pilots who've done it. But landing a de Havilland Beaver on a lake in stable conditions is a very different proposition.

And, like docking a boat, there are different levels of comfort. I've got a lot of time in Beavers and it's an environment I'm very much at home in. I know that the plane is not going to do anything sudden or drastic if I take my hand off the power lever for four seconds to take a picture.
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Old 04-29-2015, 10:53 PM   #76
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Couple of pics from heading up the ICW last March:

This is Georgia:

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Old 04-29-2015, 11:08 PM   #77
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Come on Marin your killing us. What altitude was the photo taken at? I am guessing 25 feet.
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Old 04-30-2015, 12:33 AM   #78
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It's always hard to tell altitude of an airplane from a photo taken from inside the plane. A live look out the real window is worth a thousand photos.

But it is difficult to tell the height above water, especially when there's no nearby shoreline of land reference. No doubt trying to land on a dead flat reflective surface would provide its own set of challenges, not the least of which is...for lack of a better term...hull friction. (Is it obvious I'm not a water plane jockey?)
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Old 04-30-2015, 12:40 AM   #79
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Early morning on the Columbia River.

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Old 04-30-2015, 12:42 AM   #80
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Better to land in glass seas or on four-foot-high waves? What is the maximum wave height considered safe for the typical float plane?


Tracy Arm, Alaska:


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