Section II. EQUIPMENT DESCRIPTION AND DATA

Custom Search

Chapter 1. INTRODUCTION

TM-55-1905-223-24-15 Bow Anchor Windlass Subsystem for Landing Craft Utility (LCU) NSN 1905-01-154-1191 Manual

Table 1-1. Equipment Data

TM 55-1905-223-24-15

Section II. EQUIPMENT DESCRIPTION AND DATA

1-6. Characteristics, Capabilities, and Features. A very broad view of the bow anchor windlass is as follows:

a. Characteristics.

(1) Controlled by two electro hydraulically driven anchor windlasses.

(2) Each fitted with gypsy heads/cathead warping drums.

(3) Each windlass has its own power unit.

b. Capabilities and Features.

(1) Retrieval of anchor chain to chain locker.

(2) Distribution of anchor chain from chain locker.

(3) Allows free movement of wildcat, allowing rapid, uncontrolled release of the anchor.

1-7. Location and Description of Major Components. The model MSW-112-TH bow anchor windlass (FIGURE 1-1)

is a hydraulically driven chain windlass for handling the vessel's bow anchors and stud link chain. Each windlass has a

single wildcat and two catheads and its own power unit.

a. Anchor Windlass Assembly. Two electrohydraulically driven anchor windlasses are provided for the bow

anchors, one port and one starboard. The windlasses are controlled at each unit. The windlasses are fitted with

gypsy heads/cathead warping drums (1) on each end and one wildcat (3) on the main horizontal shaft.

b. Anchor Windlass Hydraulic Power System. The anchor windlass hydraulic power system (FIGURE 1-2) consists

of the hydradyne-hydraulic power pack assembly.

c. Failsafe Brake System. The failsafe brake system (5, FIGURE 1-1) is spring loaded to apply the brake.

Hydraulic pressure is required to release or "hold off" the brake. Normal operation is to have the brake

pressurized in the released position with the hydraulic system running. Any malfunction which reduces the

hydraulic system pressure below the release pressure of the brake will cause a brake application.

d. Gear Box Assembly. Provides the necessary gear reduction between the wildcat/cathead and the hydraulic

e. Hand Brake. Provides manually operated braking device for the windlass assembly (2, FIGURE 1-1).

f. Hydraulic Motor. Provides drive to the gear box assembly (6, FIGURE 1-1).

g. Cathead. Provides hauling capability independent of the anchor operation (1, FIGURE 1-1).

1-2