OCIMF_Mooring_Equipment_Guidelines_(Second_Edition)

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HOrizontal Distance Between Ship And

Shore Connection

Height Difference Between Ship And Shore

Connection (Ship Connection May Be

Above Or Berow Shore ConnechOn)

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LENGTH OF WIRE 011; f ENSIQ DRUM IN FEET WI1 H 2'-O~ DIA. DRUM

2 3 6 7 8

NUMBER OF TURNS ON TENSION DRUM

FIGURE 7.2: SPLIT DRUM MOORING WINCHES:

TURNS REQUIRED ON TENSION PART OF DRUM

AND FORCE IN LINE AT TRANSFER POINT

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rn operation. tbe wire from t.he split drum winch is sent ashore firs! from the working half and (hen
di-rcctly from the storage half. As the wire is recovered, it is wound directly on the towage half UJJiil
that lime when only sufficient slack wire is a vailable to provide a sufficient number of turns on the
tension drum 10 : (I) hold tbe tension of (he wire on the tension drums only and (2) provide extra
turns to allow for adjustmems of the line throughout cargo transfer. At that time the wire rope is
fed through the slo! from the storage portion to the (ension ponion.