HULL HEAVING REDUCING DEVICE

PURPOSE:To improve the safety and efficiency of operation by reducing the heaving of a hull in which the operation is carried out under the stopped condition on the ocean. CONSTITUTION:Antiheaving tanks 2 are provided on the bow and stern of a hull 1. A duct 6 provided on the sidewall of the antihea...

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Bibliographische Detailangaben
Hauptverfasser:	YASUDA TETSUYA, USUHA SHIGEMI, YAMASHITA SEIYA
Format:	Patent
Sprache:	eng
Schlagworte:	EQUIPMENT FOR SHIPPING PERFORMING OPERATIONS RELATED EQUIPMENT SHIPS OR OTHER WATERBORNE VESSELS TRANSPORTING
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Beschreibung
Zusammenfassung:	PURPOSE:To improve the safety and efficiency of operation by reducing the heaving of a hull in which the operation is carried out under the stopped condition on the ocean. CONSTITUTION:Antiheaving tanks 2 are provided on the bow and stern of a hull 1. A duct 6 provided on the sidewall of the antiheaving tank 2 is opened to the lower portion of a side shell plate 3 so that the sea water can freely come in and out of the tank 2. Also, the antiheaving tank 2 is provided on the upper portion with an opening 7 through which air comes in and out. When the hull 1 heaves, the phase of the pitch of the sea water in the tank 2 is adapted to deviate from that of the hull 1, so that large damping force is generated and thereby an opening area A0 of the duct 6 in the pitch of the hull 1 is adjusted by a slide type regulator 8.