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Abstract |
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The holding ability of five types of anchor was investigated in relation to the physical properties of the seabed.
Experiments were performed using two stockless type anchors (VDR type,VDH type),two stock type anchors (VDS type,
DANFORTH type),and a single fluke anchor (VDQ type). These anchors were pulled using the Research Vessels,DAINI
-HOKUTO (19t) and HOKUTO (19t). The tension force was measured using a loadcell connected to the towing rope.
Sand content was chosen as an index property,and was correlated to the holding ability. The experimental results indicated
that the VDQ type anchor showed the highest resistance against pulling for clayey and sandy clay soils,and the VDR type
-stockless anchor showed good holding ability against pulling for sandy, clayey and sandy clay soils. The VDR typestockless
anchor can be used for anchoring of pleasure boats. |
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