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2.2
PREPARATION OF MOUNTING AREA
It is of paramount importance that the vessel has
sufficient deck
reinforcing and total structural
strength to sustain the loads that can be transmitted
to the mounting area of the windlass and chain
stopper. This should be equal to the loading of the
equipment to beyond breaking strength of the chain.
The mounting area for the windlass must be perfectly
flat and rigid. Structural grade fillers can be used to
level this area if initial flatness is inadequate.
Mounting area for the chain stopper should be
prepared at the same time. The chain stopper has to
be installed at an appropriate angle to ensure that
chain goes straight when it comes out of the chain
stopper and into windlass.
If hawse pipe is angled outboard from deck to anchor
pocket, the chain stopper should also be angled by
half of the angle of the hawse pipe (Picture 2.3). That
will help to reduce twisting of the chain between the
chain stopper and the windlass and ensure good fit
of the chain into the chainwheel. The chain stopper
can be installed vertically if the hawse pipe angle is
less than 4.
A deck cutout detail drawing is enclosed with these
instructions to assist in marking out all the drilling
and cutting required for installing the windlass.
Before drilling and cutting, check the marked out
area is dimensionally correct and make any
necessary corrections.
2.3
PREPARATION OF THE WINDLASS
The Windlass should be bolted to the deck using four
12mm (½") 316 Stainless Steel bolts of suitable
length to accommodate the deck thickness.
The nuts under the deck should be strengthened
with larger diameter thick stainless steel washers or
a stainless steel clamp plate bridging between each
of the forward bolts and rear bolts to spread the load.
If the deck is steel or aluminium, it is very important
that the windlass is insulated from the deck with a
timber pad or non-conductive gasket. Fixings should
pass through the insulators provided and under deck
fixings are also insulated from the deck. It is also
important that the anchor and chain is insulated from
the hull, including rubber lining, the chain locker and
insulating the fixing for the end of the chain to the
hull.
Without these precautions severe electrolysis can
occur.
6
Installation angle of chain stopper
2500 HWC
Picture 2.3
VETUS-Maxwell APAC Ltd
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