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Bulk carrier - a merchant ship designed to transport unpacked bulk cargo. The biggest bulk carriers are 300 meters long and 300 thousand tons of freight tonnage.

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Sailboat - boat propelled mainly or only by sail. Designed for sports, tourism and recreation.

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Tugboat - a small vessel which assists other ships by towing them or moving them in harbour.

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1. Violent movements of the sea bottom causes an earthquake.
2. The wave takes on its velocity and moves towards land.
3. Tsunami breaks down and hits the land.

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Their gain height only near shores,with the largest measuring even 30 meters. The vertical columns of water storm into the land with great force, destroying entire cities and taking many casualties.

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Tsunami is usually formed as a result of violent movements of the sea bottom, caused by earthquakes or volcanic eruptions. Tsunami waves are practically invisible on the high seas, even though their speed can reach up to 900 km /h.

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It is dedicated to gathering, researching and preserving artifacts and documents concerning ship transport, international trade, fishing and culture of people working at sea, rivers and those ashore – as well as the dissemination of knowledge on maritime history of Poland and its economy through the ages.

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-established on 1962
-it is national museum
-it is located in Gdańsk