| 摘要 |
A device to observe the sea bed from the deck of a vessel is formed by a cubicle that has attachment points to attach it to the structure of the stern of the vessel. This cubicle has a vertical wall that forms a sealed block on the bottom wall of which are the lighting points to illuminate the sea bed. The base of the rest of the cubicle has a resistant transparent glass in contact with the water, since the lights and this glass are on the same plane and below the water line of the vessel. The device has an inclined mirror in the upper part and forms a prolongation of the inclined surface of the block, in which mirror is reflected the sea bed which is seen through the glass and at the same time may be observed from any part of the deck of the vessel.
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