15A1. General. The ground tackle consists
of one 2,200-pound stockless anchor and 105
fathoms of 1-inch die-lock steel chain. The
anchor is housed in the hawsepipe in the
superstructure. The anchor chain is self-stowing in the chain locker.
The windlass consists of a wildcat driven
by a hydraulic motor, which also drives the
forward capstan (FigureA-26). The motor
is a Waterbury size 10 B-end, and is operated
from the main hydraulic system.
The hydraulic motor drives a worm gear,
located overhead, which in turn drives a vertical
shaft passing through the hull.
The windlass and capstan clutch, located
in the drive gear casing at the upper end of
the vertical shaft, is operated from the main
deck, an indicator being fitted at this station.
A pair of spur gears in the drive gear casing
drive the vertical shaft on which the capstan
head is mounted at the main deck. A pair
of bevel gears drive the shaft, which goes
forward to a bevel gear assembly. This
assembly is mounted on the windlass which
actuates the wildcat drive shaft, from which
a spur pinion drives the spur gear on the
A chain indicator, reading in fathoms, is
provided on the main deck. Windlass and
capstan cannot be driven at the same time.
The wildcat carries a snubber brake
band which is operated by gears and a line
of shafting to the main deck. An indicator
is fitted at this station.
The anchor chain, upon leaving the
chain locker, passes through a closed
fair-lead upon which are mounted two jaws operated by two traveling nuts on a screw to act
as a chain stopper for securing the chain.
The chain stopper is operated by gears and
shafting from the main deck. An indicator
is provided at this station and is operated
from the drive gear casing for the chain
stopper operating shaft.
The bitter end of the anchor chain is
secured in a tumbling hook just above the top
of the chain locker and is unlocked from the
main deck. The latch, which releases the
hook, is attached by means of a long connecting rod to a crank on the operating shaft,
located beneath a small hatch in the deck
on the port side, about 15 inches from the
centerline of the ship, where a wrench provided for operating the chain slip is stowed
in a convenient place. The operating shaft is
locked in the normal secured position of the
tumbling hook by a hinged locking plate
which engages the square end of the operating shaft. The locking plate is held in position by a toggle pin. The anchor chain can
be slipped only when the vessel is on the
Hand operation of the windlass from the
diving station is accomplished by setting the
change valve to HAND, and the rigging control valve to NEUTRAL, the hand rigging
and tilting control valve to RIG, and the
clutch in the forward torpedo room in windlass and capstan position. Rotating the bow
diving handwheel to the right will hoist the
can be stowed below the main deck on the
port side adjacent to the capstan shaft.
The after capstan is driven by the stern
plane tilting motor through a chain drive
from a sprocket on the after end of the motor
shaft to the capstan worm gear. The chain
is removable and can be disassembled by
removing a special pin from the links. The
stern plane tilting hydraulic pump cannot be
cut when the capstan is in use; therefore, the
pump control shaft should be in the neutral
position to prevent movement of the planes.
The capstan is mounted on the top of the
vertical worm gear shaft.
15C1. Dropping the anchor from the water's
edge. Following is the procedure for dropping the anchor from the water's edge:
1. Shift the clutch in the forward torpedo room to the windless and capstan position.
2. Shift the clutch on the main deck to
the windless position.
3. Open the chain stopper.
4. Loosen the brake band.
5. Operate the windlass and capstan
control valve from the main deck by turning
counterclockwise to lower.
6. When the anchor reaches the water's
edge, return the windlass and capstan and
anchor control valve to the neutral position.
7. Tighten the brake band.
8. Put the windlass and capstan clutch
on the main deck in the neutral position.
9. Release the brake band.
Note. When the brake band is released,
the weight of the anchor will carry out the
chain. The chain is snubbed when the desired length is run out.
15C2. Hoisting the anchor by hand. Hoisting the anchor by hand is accomplished as
1. Shift the change valve in the control
room at the bow plane diving station to the
2. Set the bow plane tilting stand pump
stroke to full stroke.
3. Set the hand rigging and tilting control valve to the rig position.
4. Shift the clutch in the forward torpedo room to the windlass and capstan position.
5. Shift the clutch on the main deck to
the windlass position.
6. Loosen the brake band.
7. Open the chain stopper.
8. Rotate the bow plane wheel clockwise to raise the anchor.
15C3. Securing the anchor for sea. In
securing the anchor for sea, it is necessary
1. Shut the chain stopper.
2. Tighten the brake band.
3. Shift the clutch on the main deck to
the windless position.