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Elevation of
Anchor Chains Showing Length on Seabed
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Input Data in yellow cells below for Full Load and
Ballast Condition Drafts
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Calculated
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Allowable Range
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Th, Horizontal load on vessel,
MT
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0 - 300
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S, Length of chain paid out from
bellmouth, m
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> h2 - Dbal + h1
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d, Studlink Chain size, mm
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20 - 200
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h2, Water Depth at Anchorage, m
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< 1001
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W, Anchor Weight in Air, kg
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< 10 < 99,999
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h1, Distance keel to bellmouth,
m
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> 0
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Data for 2 Drafts, Anchor
Efficiencies & Chain Friction Factors
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Dmax
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Dmin
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Range
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Dmax, Dmin, Drafts at Bow, m
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< h2
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f1U , f1L , Upper & Lower Bound Anchor Efficiencies, ratio
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3 - 60
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f3U , f3L , Upper & Lower Bound Chain friction factors on
seabed
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0.5 - 1.2
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Calculated Results
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Dmax
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Dmin
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Tb, tension at top = w.fb.yb, FULL
Load Condition, MT
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FoSU , FosL , Factors of Safety Anchor, = UHCt/Th
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Warnings
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UHCaU , UHCaL , Upper & Lower Bound UHC for ANCHOR, MT
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UHCcU , UHCcL , Upper & Lower Bound UHC CHAIN Friction, MT
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UHCt = UHCa + UHCc, Upper & Lower
UHCs Anchor SYSTEM, MT
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VaDmax , VaDmin , Vertical Uplift at Anchor, for Dmax & Dmin, MT
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LOBDmax , LOBDmin , Length of Chain on Bottom, m
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qº, Uplift Angles at Anchor, for
Dmax & Dmin, degrees
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