Abstract
As an empirical and traditional ship mooring method, a pretension mooring (a hard mooring) or slack mooring (without pretension in mooring line) is performed for large ship or small ship, respectively. However, the slack mooring is applied to a large ship under beam seas in port to avoid large roll and sway motions, and excessive loads in mooring lines and fenders. In this study, the mechanism and validity of the slack mooring for large ship is investigated by a physical model test and a numerical simulation method of the moored ship motions and mooring loads under beam seas.
Highlights
The target large ship is about 100kDWT class bulk carrier
The pretension of the actual ship is given at 10tons (100kN) for each line, and is not applied in the slack mooring
Four pieces buckling type fenders are installed at the breasting dolphin
Summary
METHODOLOGY The target large ship is about 100kDWT class bulk carrier (Length=277m, Breadth=49m, Depth=27m, draft =11.43m (in full loaded), =9.43m (in ballast), KG =21.1m (in full loaded), =13.24m (in ballast), Displacement= 104,953ton (in full loaded), =83,643ton (in ballast) in full loaded and ballast conditions. The pretension of the actual ship is given at 10tons (100kN) for each line, and is not applied in the slack mooring. Four pieces buckling type fenders are installed at the breasting dolphin.
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