Korean observation window from a boat. Travel Tips

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Korean observation window from a boat. Travel Tips

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You can look into the underwater kingdom, even take a picture of it without plunging into the water. The "Korean window" will help out - a simple adaptation of fishermen and pearl hunters from the Asian coast of the Pacific Ocean.

This is a wooden box without a lid, the bottom of which is made of glass and does not let water through. Through a flexible insert, the box is connected to a pole, with its help the "window" is held and moved on the surface of the water. The bottom of the box, "calming" the water and removing glare, allows you to look into the world of silence without interference.

We want to offer you a "window" of a more perfect design. It has a tin (made of copper, brass, galvanized iron) case with a truncated top 50-60 cm high. In the lower part, at the base, there is a protruding rim, to which a transparent and fairly thick (about 5-7 mm) sheet of glass is hermetically attached. The glass is pressed from the outside with a metal ring, and rubber gaskets are placed between the glass, the rim and the outer metal ring. All this is fastened on the nuts with through screws.

Korean observation window from a boat
"Korean window" for observation from a boat

It should be taken into account that the device has a sufficiently large internal volume and a significant buoyant force acts on it. Therefore, in order not to injure yourself on sharp upper edges during observation, they should be edged with rubber or other soft material.

When photographing, the "window" is used as follows: on its upper socket, a folding rod with a thread is fixed, on which a camera is hung, preferably with high-aperture optics. If conditions do not allow natural light, you can use an electronic flash. Exposure is determined empirically.

When photographing rare specimens of underwater inhabitants, try not to make noise and disguise yourself as much as possible. And do not be naive to believe that if you see fish poorly, then they are no better than you. It turns out that the higher transparency of air compared to water allows fish to see surface objects under water at much greater distances than something in their native environment. And the objects that are above the water, the fish also observe through a kind of "window", called Snell's hatch (the cone of rays is 97,6 degrees). The refractive indices of light rays in water and the lens of the eye of a fish are close and equal to 1,30-1,33 units. That is why fish, unlike us, see so well in their world.

The Korean window will also help out in winter, but in a different version (see fig.). You will need a plastic or metal tube and a glass from a flashlight. The glass, along with the ferrule and rubber gasket, is attached to the tube and sealed with epoxy or window putty. For photography, install an ultraviolet light filter or a frame from it in the upper part of the pipe.

Korean observation window from a boat
Winter device: on the left - with a flat bottom, on the right - with a spherical bottom

Note that with the help of the "Korean window" you can only take pictures in a vertical or close to it device. Well, the photographer always gets away with it.

Author: N.Leonidov

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