Dave Gerr - Boat Mechanical Systems Handbook-How to Design, Install, and Recognize Proper Systems in Boats

The photo of Imagine’s foredeck in
Figure 24-11 shows the foredeck with the
twin windlass and roller arrangement. Note
how the rollers are far enough apart to
handle both anchors. Both vertical wind-
lasses have warping capstans on top. Also
installed are chain stoppers to take the load
off the windlasses. You can’t really see it in
the photo, but from the anchor roller back
to the chain stoppers (where the chain can
rub on the deck) there is a channel under
the chain and the channel is lined with a
flat of UHMWPE. This not only keeps the
chain from abrading the deck but is quieter
too.
The bow-on view of Imagine
(Figure 24-12) shows these two anchor
rollers from outside. One sets a Delta, the
other a claw anchor. The line running up to

the hawsehole is a nylon snubber, about

which more later.

Always remember that the anchor roller

and the windlass absorb considerable loads.

They must be very securely fastened—

through-bolted with heavy backing plates—

with compression tubes or annuluses at each

fastener. Additional reinforcing in the lami-

nate or a solid core at the fastening is also im-

portant. Don’t stint here. On an existing boat,

inspect to see how this has been done. If

Chapter 24: Sizing the Anchor and Rode and Selecting Anchor-Handling Gear

Figure 24-9. Double anchor roller. These
rollers are spaced too closely.

Figure 24-10. Bow-on view of the double
anchor roller shown in Figure 24-9. The
port-side roller is hidden behind the Delta
stowed on the starboard roller

Figure 24-11.

Twin vertical

windlasses and

anchor rollers

Figure 24-12.

Bow-on view of

Imagine’s double

anchor rollers