Questão 48946

48946 Ano: 2008
Disciplina: Engenharia Naval
Banca: PSCPP
Orgão: DPC Marinha

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Arte Naval

When a tug is slowly overtaking a bulk carrier and approach the stern from behind, it experience a(n) ________________ of speed due to the ________________. When coming nearly abeam of the stern the tug is ________________ the ship, caused by ________________.
Since the tug’s forepart is closer to the ship than the stern, the tug experiences a ________________ turning moment. As soon as the tug moves further forward and parallel with the ship’s hull, it experience a sudden ________________ turning moment caused by ________________.

According to Capt. Henk Hensen, in the book “Tug Use in Port”, which answer best fill in the blanks?

decrease – stern high pressure zone – sucked toward – low pressure field due to the speed of water between tug and ship’s hull – toward – outward – the tug’s bow cushion

decrease – stern high pressure zone – pushed outward – stern high pressure – outward – toward – the wave generated by the ship

increase – relative low water speed – sucked toward – low pressure field due to the speed of water between tug and ship’s hull – outward – toward – relatively high water speed

increase – relative low water speed – pushed outward – the ship wake – toward – outward – the tug’s bow cushion

increase – relative low water speed – sucked toward – low pressure field due to the speed of water between tug and ship’s hull – toward – outward – the tug’s bow cushion

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